Descriptivestatistics2.pdf

18 Apr,2022

Descriptive statistics for Myocardial

infarction complications Database

Contents 1 General description …………………………………………………………………………………….. 6

2 Complications ……………………………………………………………………………………………. 6

2.1 Atrial fibrillation (FIBR_PREDS) …………………………………………………………. 6

2.2 Supraventricular tachycardia (PREDS_TAH) …………………………………………. 6

2.3 Ventricular tachycardia (JELUD_TAH) …………………………………………………. 6

2.4 Ventricular fibrillation (FIBR_JELUD) ………………………………………………….. 6

2.5 Third-degree AV block (A_V_BLOK) …………………………………………………… 6

2.6 Pulmonary edema (OTEK_LANC) ………………………………………………………… 6

2.7 Myocardial rupture (RAZRIV) ……………………………………………………………… 6

2.8 Dressler syndrome (DRESSLER) ………………………………………………………….. 7

2.9 Chronic heart failure (ZSN) ………………………………………………………………….. 7

2.10 Relapse of the myocardial infarction (REC_IM) ………………………………….. 7

2.11 Post-infarction angina (P_IM_STEN) …………………………………………………. 7

2.12 Lethal outcome (cause) (LET_IS) ………………………………………………………. 7

2.13 Summary …………………………………………………………………………………………. 7

3 Input feature measured at the time of admission to hospital …………………………… 11

3.1 Age (AGE) ……………………………………………………………………………………….. 11

3.2 Gender (SEX) ……………………………………………………………………………………. 11

3.3 Quantity of myocardial infarctions in the anamnesis (INF_ANAM) ………… 12

3.4 Exertional angina pectoris in the anamnesis (STENOK_AN) ………………….. 12

3.5 Functional class (FC) of angina pectoris in the last year (FK_STENOK) ….. 12

3.6 Coronary heart disease (CHD) in recent weeks, days before admission to hospital (IBS_POST) …………………………………………………………………………………………….. 12

3.7 Heredity on CHD (IBS_NASL) …………………………………………………………… 13

3.8 Presence of an essential hypertension (GB) …………………………………………… 13

3.9 Symptomatic hypertension (SIM_GIPERT) ………………………………………….. 13

3.10 Duration of arterial hypertension (DLIT_AG) ……………………………………. 13

3.11 Presence of chronic Heart failure (HF) in the anamnesis (ZSN_A) ……….. 13

3.12 Observing of arrhythmia in the anamnesis (nr11) ……………………………….. 14

3.13 Premature atrial contractions in the anamnesis (nr01) …………………………. 14

3.14 Premature ventricular contractions in the anamnesis (nr02) …………………. 14

3.15 Paroxysms of atrial fibrillation in the anamnesis (nr03) ………………………. 14

3.16 A persistent form of atrial fibrillation in the anamnesis (nr04) ……………… 14

3.17 Ventricular fibrillation in the anamnesis (nr07) ………………………………….. 14

3.18 Ventricular paroxysmal tachycardia in the anamnesis (nr08) ……………….. 14

3.19 First-degree AV block in the anamnesis (np01) ………………………………….. 15

3.20 Third-degree AV block in the anamnesis (np04) ………………………………… 15

3.21 LBBB (anterior branch) in the anamnesis (np05) ……………………………….. 15

3.22 Incomplete LBBB in the anamnesis (np07) ……………………………………….. 15

3.23 Complete LBBB in the anamnesis (np08) ………………………………………….. 15

3.24 Incomplete RBBB in the anamnesis (np09) ……………………………………….. 15

3.25 Complete RBBB in the anamnesis (np10) ………………………………………….. 15

3.26 Diabetes mellitus in the anamnesis (endocr_01) …………………………………. 16

3.27 Obesity in the anamnesis (endocr_02)……………………………………………….. 16

3.28 Thyrotoxicosis in the anamnesis (endocr_03) …………………………………….. 16

3.29 Chronic bronchitis in the anamnesis (zab_leg_01) ………………………………. 16

3.30 Obstructive chronic bronchitis in the anamnesis (zab_leg_02) ……………… 16

3.31 Bronchial asthma in the anamnesis (zab_leg_03) ……………………………….. 16

3.32 Pulmonary tuberculosis in the anamnesis (zab_leg_06) ……………………….. 16

3.33 Systolic blood pressure according to Emergency Cardiology Team

(S_AD_KBRIG) …………………………………………………………………………………………………… 17

3.34 Diastolic blood pressure according to Emergency Cardiology Team

(D_AD_KBRIG) …………………………………………………………………………………………………… 17

3.35 Systolic blood pressure according to intensive care unit (S_AD_ORIT) … 17

3.36 Diastolic blood pressure according to intensive care unit (D_AD_ORIT) 17

3.37 Pulmonary edema at the time of admission to intensive care unit (O_L_POST) 17

3.38 Cardiogenic shock at the time of admission to intensive care unit (K_SH_POST) 17

3.39 Paroxysms of atrial fibrillation at the time of admission to intensive care

unit, (or at a pre-hospital stage) (MP_TP_POST) ……………………………………………………… 17

3.40 Paroxysms of supraventricular tachycardia at the time of admission to

intensive care unit, (or at a pre-hospital stage) (SVT_POST) ……………………………………… 18

3.41 Paroxysms of ventricular tachycardia at the time of admission to intensive care unit, (or at a pre-hospital stage) (GT_POST) ……………………………………………………… 18

3.42 Ventricular fibrillation at the time of admission to intensive care unit, (or at a pre-hospital stage) (FIB_G_POST)……………………………………………………………………….. 18

3.43 Presence of an anterior myocardial infarction (left ventricular) (ECG changes in leads V1 – V4 ) (ant_im) …………………………………………………………………………. 18

3.44 Presence of a lateral myocardial infarction (left ventricular) (ECG changes

in leads V5 – V6, I, AVL) (lat_im) ……………………………………………………………………………. 18

3.45 Presence of an inferior myocardial infarction (left ventricular) (ECG changes in leads III, AVF, II). (inf_im) ……………………………………………………………………. 19

3.46 Presence of a posterior myocardial infarction (left ventricular) (ECG

changes in V7 – V9, reciprocity changes in leads V1 – V3) (post_im) …………………………… 19

3.47 Presence of a right ventricular myocardial infarction (IM_PG_P) …………. 19

3.48 ECG rhythm at the time of admission to hospital – sinus (with a heart rate 60-90) (ritm_ecg_p_01) …………………………………………………………………………………………. 19

3.49 ECG rhythm at the time of admission to hospital – atrial fibrillation

(ritm_ecg_p_02) ……………………………………………………………………………………………………. 19

3.50 ECG rhythm at the time of admission to hospital – atrial (ritm_ecg_p_04)

3.51 ECG rhythm at the time of admission to hospital – idioventricular

(ritm_ecg_p_06) ……………………………………………………………………………………………………. 20

3.52 ECG rhythm at the time of admission to hospital – sinus with a heart rate above 90 (tachycardia) (ritm_ecg_p_07) ………………………………………………………………….. 20

3.53 ECG rhythm at the time of admission to hospital – sinus with a heart rate below 60 (bradycardia) (ritm_ecg_p_08) …………………………………………………………………. 20

3.54 Premature atrial contractions on ECG at the time of admission to hospital

(n_r_ecg_p_01) …………………………………………………………………………………………………….. 20

3.55 Frequent premature atrial contractions on ECG at the time of admission to

hospital (n_r_ecg_p_02) ………………………………………………………………………………………… 20

3.56 Premature ventricular contractions on ECG at the time of admission to

hospital (n_r_ecg_p_03) ………………………………………………………………………………………… 21

3.57 Frequent premature ventricular contractions on ECG at the time of admission to hospital (n_r_ecg_p_04) ……………………………………………………………………… 21

3.58 Paroxysms of atrial fibrillation on ECG at the time of admission to hospital

(n_r_ecg_p_05) …………………………………………………………………………………………………….. 21

3.59 Persistent form of atrial fibrillation on ECG at the time of admission to hospital (n_r_ecg_p_06) ………………………………………………………………………………………… 21

3.60 Paroxysms of supraventricular tachycardia on ECG at the time of admission

to hospital (n_r_ecg_p_08) …………………………………………………………………………………….. 21

3.61 Paroxysms of ventricular tachycardia on ECG at the time of admission to hospital (n_r_ecg_p_09) ………………………………………………………………………………………… 21

3.62 Ventricular fibrillation on ECG at the time of admission to hospital (n_r_ecg_p_10) …………………………………………………………………………………………………….. 22

3.63 Sinoatrial block on ECG at the time of admission to hospital (n_p_ecg_p_01) ……………………………………………………………………………………………………. 22

3.64 First-degree AV block on ECG at the time of admission to hospital (n_p_ecg_p_03) ……………………………………………………………………………………………………. 22

3.65 Type 1 Second-degree AV block (Mobitz I/Wenckebach) on ECG at the time of admission to hospital (n_p_ecg_p_04) …………………………………………………………………. 22

3.66 Type 2 Second-degree AV block (Mobitz II/Hay) on ECG at the time of admission to hospital (n_p_ecg_p_05) …………………………………………………………………….. 22

3.67 Third-degree AV block on ECG at the time of admission to hospital

(n_p_ecg_p_06) ……………………………………………………………………………………………………. 22

3.68 LBBB (anterior branch) on ECG at the time of admission to hospital (n_p_ecg_p_07) ……………………………………………………………………………………………………. 23

3.69 LBBB (posterior branch) on ECG at the time of admission to hospital (n_p_ecg_p_08) ……………………………………………………………………………………………………. 23

3.70 Incomplete LBBB on ECG at the time of admission to hospital (n_p_ecg_p_09) ……………………………………………………………………………………………………. 23

3.71 Complete LBBB on ECG at the time of admission to hospital (n_p_ecg_p_10) ……………………………………………………………………………………………………. 23

3.72 Incomplete RBBB on ECG at the time of admission to hospital (n_p_ecg_p_11) ……………………………………………………………………………………………………. 23

3.73 Complete RBBB on ECG at the time of admission to hospital

(n_p_ecg_p_12) ……………………………………………………………………………………………………. 23

3.74 Fibrinolytic therapy by Сеliasum 750k IU (fibr_ter_01) ……………………… 24

3.75 Fibrinolytic therapy by Сеliasum 1m IU (fibr_ter_02) ………………………… 24

3.76 Fibrinolytic therapy by Сеliasum 3m IU (fibr_ter_03) ………………………… 24

3.77 Fibrinolytic therapy by Streptase (fibr_ter_05) …………………………………… 24

3.78 Fibrinolytic therapy by Сеliasum 500k IU (fibr_ter_06) ……………………… 24

3.79 Fibrinolytic therapy by Сеliasum 250k IU (fibr_ter_07) ……………………… 24

3.80 Fibrinolytic therapy by Streptodecase 1.5m IU (fibr_ter_08) ……………….. 24

3.81 Hypokalemia ( < 4 mmol/L) (GIPO_K) …………………………………………….. 25

3.82 Serum potassium content (K_BLOOD) (mmol/L) ………………………………. 25

3.83 Increase of sodium in serum (more than 150 mmol/L) (GIPER_Na) …….. 25

3.84 Serum sodium content (Na_BLOOD) (mmol/L) …………………………………. 25

3.85 Serum AlAT content (ALT_BLOOD) (IU/L) …………………………………….. 25

3.86 Serum AsAT content (AST_BLOOD) (IU/L) …………………………………….. 25

3.87 Serum CPK content (KFK_BLOOD) (IU/L) ……………………………………… 25

3.88 White blood cell count (billions per liter) (L_BLOOD)……………………….. 25

3.89 ESR (Erythrocyte sedimentation rate) (ROE) (мм) …………………………….. 25

3.90 Time elapsed from the beginning of the attack of CHD to the hospital (TIME_B_S) 26

3.91 Use of opioid drugs by the Emergency Cardiology Team (NA_KB) …….. 26

3.92 Use of NSAIDs by the Emergency Cardiology Team (NOT_NA_KB) …. 26

3.93 Use of lidocaine by the Emergency Cardiology Team (LID_KB) …………. 26

3.94 Use of liquid nitrates in the ICU (NITR_S) ……………………………………….. 26

3.95 Use of lidocaine in the ICU (LID_S_n)……………………………………………… 26

3.96 Use of beta-blockers in the ICU (B_BLOK_S_n) ……………………………….. 27

3.97 Use of calcium channel blockers in the ICU (ANT_CA_S_n) ……………… 27

3.98 Use of а anticoagulants (heparin) in the ICU (GEPAR_S_n) ……………….. 27

3.99 Use of acetylsalicylic acid in the ICU (ASP_S_n) ………………………………. 27

3.100 Use of Ticlid in the ICU (TIKL_S_n) ……………………………………………….. 27

3.101 Use of Trental in the ICU (TRENT_S_n) ………………………………………….. 27

4 Input feature measured before end of the first day (24 hours after admission to the hospital) 28

4.1 Relapse of the pain in the first hours of the hospital period (R_AB_1_n) ….. 28

4.2 Use of opioid drugs in the ICU in the first hours of the hospital period (NA_R_1_n) 28

4.3 Use of NSAIDs in the ICU in the first hours of the hospital period

(NOT_NA_1_n) ……………………………………………………………………………………………………. 28

5 Input feature measured before end of the second day (48 hours after admission to the hospital) ……………………………………………………………………………………………………………… 28

5.1 Relapse of the pain in the second day of the hospital period (R_AB_2_n) … 28

5.2 Use of opioid drugs in the ICU in the second day of the hospital period (NA_R_2_n) 29

5.3 Use of NSAIDs in the ICU in the second day of the hospital period

(NOT_NA_2_n) ……………………………………………………………………………………………………. 29

6 Input feature measured before end of the third day (72 hours after admission to the hospital) 29

6.1 Relapse of the pain in the third day of the hospital period (R_AB_3_n) ……. 29

6.2 Use of opioid drugs in the ICU in the third day of the hospital period (NA_R_3_n) 29

6.3 Use of NSAIDs in the ICU in the third day of the hospital period

(NOT_NA_3_n) ……………………………………………………………………………………………………. 30

1 General description

Myocardial infarction complications Database was collected in the Krasnoyarsk

Interdistrict Clinical Hospital №20 named after I. S. Berzon (Russia) in 1992-1995.

Database contains 1700 records (patients), 111 input features and 12 complications.

Database contains 7.6% of missing values.

2 Complications

2.1 Atrial fibrillation (FIBR_PREDS)

Binary attribute. Value # Cases Fraction

No complication 1530 90.00%

There is complication 170 10.00%

2.2 Supraventricular tachycardia (PREDS_TAH)

Binary attribute. Value # Cases Fraction

No complication 1680 98.82%

There is complication 20 1.18%

2.3 Ventricular tachycardia (JELUD_TAH)

Binary attribute. Value # Cases Fraction

No complication 1658 97.53%

There is complication 42 2.47%

2.4 Ventricular fibrillation (FIBR_JELUD)

Binary attribute. Value # Cases Fraction

No complication 1629 95.82%

There is complication 71 4.18%

2.5 Third-degree AV block (A_V_BLOK)

Binary attribute. Value # Cases Fraction

No complication 1643 96.65%

There is complication 57 3.35%

2.6 Pulmonary edema (OTEK_LANC)

Binary attribute. Value # Cases Fraction

No complication 1541 90.65%

There is complication 159 9.35%

2.7 Myocardial rupture (RAZRIV)

Binary attribute.

Value # Cases Fraction

No complication 1646 96.82%

There is complication 54 3.18%

2.8 Dressler syndrome (DRESSLER)

Binary attribute. Value # Cases Fraction

No complication 1625 95.59%

There is complication 75 4.41%

2.9 Chronic heart failure (ZSN)

Binary attribute. Value # Cases Fraction

No complication 1306 76.82%

There is complication 394 23.18%

2.10 Relapse of the myocardial infarction (REC_IM)

Binary attribute. Value # Cases Fraction

No complication 1541 90.65%

There is complication 159 9.35%

2.11 Post-infarction angina (P_IM_STEN)

Binary attribute. Value # Cases Fraction

No complication 1552 91.29%

There is complication 148 8.71%

2.12 Lethal outcome (cause) (LET_IS)

Categorical attribute. Categories are not ordered. Value # Cases Fraction

0 Alive 1429 84.06%

1 Cardiogenic shock 110 6.47%

2 Pulmonary edema 18 1.06%

3 Myocardial rupture 54 3.18%

4 Progress of congestive heart failure 23 1.35%

5 Thromboembolism 12 0.71%

6 Asystole 27 1.59%

7 Ventricular fibrillation 27 1.59%

Can be considered as binary outcome: dead or alive.

2.13 Summary

Complication With complication

# Cases Fraction

Atrial fibrillation (FIBR_PREDS) 170 10.00%

Supraventricular tachycardia (PREDS_TAH) 20 1.18%

Ventricular tachycardia (JELUD_TAH) 42 2.47%

Ventricular fibrillation (FIBR_JELUD) 71 4.18%

Third-degree AV block (A_V_BLOK) 57 3.35%

Pulmonary edema (OTEK_LANC) 159 9.35%

Complication With complication

# Cases Fraction

Myocardial rupture (RAZRIV) 54 3.18%

Dressler syndrome (DRESSLER) 75 4.41%

Chronic heart failure (ZSN) 394 23.18%

Relapse of the myocardial infarction (REC_IM) 159 9.35%

Post-infarction angina (P_IM_STEN) 148 8.71%

Lethal outcome (cause) (LET_IS) 271 15.94%

Some of complications are nonexclusive. There are some combination of

complications. In this subsection the lethal outcome is interpreted as binary attribute.

Cases FIB

JEL

FIB

JEL

AN C

RIV

IM_

663 102 X

104 X 1 X X

35 X 19 X X

6 X X 192 X

10 X X

14 X X 11 X X 5 X X X

7 X X X 40 X 1 X X

14 X X 3 X X X

36 X X

1 X X X

38 X 21 X X

1 X X 12 X X 1 X X X

1 X X X 26 X X 5 X X X

2 X X X 9 X X X 4 X X X X

2 X X 1 X X X X 1 X X X X X

1 X X X X

17 X 5 X X

2 X X 1 X X X

7 X X

Cases FIB

JEL

FIB

JEL

AN C

RIV

IM_

1 X X 3 X X X

1 X X 1 X X X

2 X X X 1 X X X X

25 X 8 X X

1 X X 1 X X 1 X X X 2 X X 1 X X X

1 X X X X

3 X X X

1 X X X X 1 X X X X 1 X X X X 1 X X 1 X X X

2 X X X 1 X X X X

15 X 1 X X X

5 X X 1 X X X 1 X X X X 1 X X 1 X X X X

1 X X X X 1 X X 1 X X X

1 X X 1 X X X

1 X X X X 1 X X X X 1 X X X 1 X X X X X

5 X 1 X X 1 X X X 2 X X 1 X X X 1 X X X 1 X X 1 X X X

63 X 5 X X

3 X X 3 X X 5 X X X

1 X X X

Cases FIB

JEL

FIB

JEL

AN C

RIV

IM_

30 X X 2 X X X

1 X X X 4 X X X 1 X X X X

1 X X X 1 X X X 1 X X X X

1 X X X X 1 X X X

1 X X X X

2 X X X X

1 X X X X

6 X X 1 X X X 5 X X X 1 X X X X

1 X X X X X

2 X X 2 X X X 1 X X X X

1 X X X X

3 X X 1 X X X

1 X X X X

2 X X X 2 X X X X 1 X X X 1 X X X X

1 X X X X X 1 X X X X

1 X X X X X

1 X X X X X 1 X X X X 2 X X 2 X X X

1 X X X X 1 X X X X X

1 X X X X

663 records do not contain any complications. These records corresponds to patients

without complications. It is not “healthy” patients. Records contain up to 5 complications. List

of combinations with 4 and 5 complications is presented in table below. Totally 36 records

have 4 complications and 7 records contain 5 complications.

Cases FIB

JEL

FIB

JEL

IM_

licati

4 X X X X 4

1 X X X X 4

Cases FIB

JEL

FIB

JEL

IM_

licati

1 X X X X 4

2 X X X X 4

1 X X X X 4

2 X X X X 4

1 X X X X 4

1 X X X X X 5

3 Input feature measured at the time of admission to hospital

3.1 Age (AGE)

Numeric attribute Feature Min Max Mean STD Missing cases Missing fraction

Age 26 92 61.86 11.26 8 0.47%

3.2 Gender (SEX)

Binary attribute

Value # Cases Fraction

0 – female 635 37.35%

1 – male 1065 62.65%

3.3 Quantity of myocardial infarctions in the anamnesis (INF_ANAM)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction Dummy

0 1060 62.35% 0 0 0

1 410 24.12% 1 0 0

2 147 8.65% 1 1 0

3+ 79 4.65% 1 1 1

Missing 4 0.24%

3.4 Exertional angina pectoris in the anamnesis (STENOK_AN)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction Dummy

0 661 38.88% 0 0 0 0 0 0

1 146 8.59% 1 0 0 0 0 0

2 137 8.06% 1 1 0 0 0 0

3 117 6.88% 1 1 1 0 0 0

4 76 4.47% 1 1 1 1 0 0

5 125 7.35% 1 1 1 1 1 0

6+ 332 19.53% 1 1 1 1 1 1

Missing 106 6.24%

3.5 Functional class (FC) of angina pectoris in the last year (FK_STENOK)

Ordinal attribute. Possible usage of cumulative dummy coding. Value # Cases Fraction Dummy

0 – there is no angina pectoris 661 38.88% 0 0 0 0

1 – I FC 47 2.76% 1 0 0 0

2 – II FC 854 50.24% 1 1 0 0

3 – III FC. 54 3.18% 1 1 1 0

4 – IV FC 11 0.65% 1 1 1 1

Missing 73 4.29%

3.6 Coronary heart disease (CHD) in recent weeks, days before admission to hospital (IBS_POST)

Ordinal attribute. Possible usage of cumulative dummy coding. Value # Cases Fraction Dummy

0 – there was no СHD 418 24.59% 0 0

1 – exertional angina pectoris 548 32.24% 1 0

2 – unstable angina pectoris 683 40.18% 1 1

Missing 51 3.00%

3.7 Heredity on CHD (IBS_NASL)

Binary attribute. Value # Cases Fraction

0 – isn’t burdened 45 2.65%

1 – burdened 27 1.59%

Missing 1628 95.76%

3.8 Presence of an essential hypertension (GB)

Ordinal attribute. Possible usage of cumulative dummy coding. Value # Cases Fraction Dummy

0 – there is no essential hypertension 605 35.59% 0 0 0

1 – Stage 1 11 0.65% 1 0 0

2 – Stage 2 880 51.76% 1 1 0

3 – Stage 3 195 11.47% 1 1 1

Missing 9 0.53%

3.9 Symptomatic hypertension (SIM_GIPERT)

Binary attribute. Value # Cases Fraction

0 – no 1635 96.18%

1 – yes 57 3.35%

Missing 8 0.47%

3.10 Duration of arterial hypertension (DLIT_AG)

Ordinal attribute. Possible usage of cumulative dummy coding. Value # Cases Fraction Dummy

0 – there was no arterial hypertension 551 32.41% 0 0 0 0 0 0 0

1 – one year 93 5.47% 1 0 0 0 0 0 0

2 – two years 58 3.41% 1 1 0 0 0 0 0

3 – three years 58 3.41% 1 1 1 0 0 0 0

4 – four years 22 1.29% 1 1 1 1 0 0 0

5 – five years 73 4.29% 1 1 1 1 1 0 0

6 – 6-10 years 165 9.71% 1 1 1 1 1 1 0

7 – more than 10 years 432 25.41% 1 1 1 1 1 1 1

Missing 248 14.59%

3.11 Presence of chronic Heart failure (HF) in the anamnesis (ZSN_A)

Partially ordered attribute: there are two lines of severities:

0<1<2<4,

0<1<3<4.

State 4 means simultaneous states 2 and 3

Possible usage of cumulative dummy coding. Value # Cases Fraction Dummy

0 – there is no chronic heart failure 1468 86.35% 0 0 0

1 – I stage 103 6.06% 1 0 0

2 – IIА stage (heart failure due to right ventricular systolic dysfunction) 27 1.59% 1 1 0

3 – IIА stage (heart failure due to left ventricular systolic dysfunction) 29 1.71% 1 0 1

4 – IIB stage (heart failure due to left and right ventricular systolic

dysfunction)

19 1.12% 1 1 1

Missing 54 3.18%

3.12 Observing of arrhythmia in the anamnesis (nr11)

Binary attribute. Value # Cases Fraction

0 – no 1637 96.29%

1 – yes 42 2.47%

Missing 21 1.24%

3.13 Premature atrial contractions in the anamnesis (nr01)

Binary attribute. Value # Cases Fraction

0 – no 1675 98.53%

1 – yes 4 0.24%

Missing 21 1.24%

3.14 Premature ventricular contractions in the anamnesis (nr02)

Binary attribute. Value # Cases Fraction

0 – no 1660 97.65%

1 – yes 19 1.12%

Missing 21 1.24%

3.15 Paroxysms of atrial fibrillation in the anamnesis (nr03)

Binary attribute. Value # Cases Fraction

0 – no 1644 96.71%

1 – yes 35 2.06%

Missing 21 1.24%

3.16 A persistent form of atrial fibrillation in the anamnesis (nr04)

Binary attribute. Value # Cases Fraction

0 – no 1650 97.06%

1 – yes 29 1.71%

Missing 21 1.24%

3.17 Ventricular fibrillation in the anamnesis (nr07)

Binary attribute. Value # Cases Fraction

0 – no 1678 98.71%

1 – yes 1 0.06%

Missing 21 1.24%

3.18 Ventricular paroxysmal tachycardia in the anamnesis (nr08)

Binary attribute. Value # Cases Fraction

0 – no 1675 98.53%

1 – yes 4 0.24%

Missing 21 1.24%

3.19 First-degree AV block in the anamnesis (np01)

Binary attribute. Value # Cases Fraction

0 – no 1680 98.82%

1 – yes 2 0.12%

Missing 18 1.06%

3.20 Third-degree AV block in the anamnesis (np04)

Binary attribute. Value # Cases Fraction

0 – no 1679 98.76%

1 – yes 3 0.18%

Missing 18 1.06%

3.21 LBBB (anterior branch) in the anamnesis (np05)

Binary attribute. Value # Cases Fraction

0 – no 1671 98.29%

1 – yes 11 0.65%

Missing 18 1.06%

3.22 Incomplete LBBB in the anamnesis (np07)

Binary attribute. Value # Cases Fraction

0 – no 1681 98.88%

1 – yes 1 0.06%

Missing 18 1.06%

3.23 Complete LBBB in the anamnesis (np08)

Binary attribute. Value # Cases Fraction

0 – no 1676 98.59%

1 – yes 6 0.35%

Missing 18 1.06%

3.24 Incomplete RBBB in the anamnesis (np09)

Binary attribute. Value # Cases Fraction

0 – no 1680 98.82%

1 – yes 2 0.12%

Missing 18 1.06%

3.25 Complete RBBB in the anamnesis (np10)

Binary attribute. Value # Cases Fraction

0 – no 1679 98.76%

1 – yes 3 0.18%

Missing 18 1.06%

3.26 Diabetes mellitus in the anamnesis (endocr_01)

Binary attribute. Value # Cases Fraction

0 – no 1461 85.94%

1 – yes 228 13.41%

Missing 11 0.65%

3.27 Obesity in the anamnesis (endocr_02)

Binary attribute. Value # Cases Fraction

0 – no 1648 96.94%

1 – yes 42 2.47%

Missing 10 0.59%

3.28 Thyrotoxicosis in the anamnesis (endocr_03)

Binary attribute. Value # Cases Fraction

0 – no 1677 98.65%

1 – yes 13 0.76%

Missing 10 0.59%

3.29 Chronic bronchitis in the anamnesis (zab_leg_01)

Binary attribute. Value # Cases Fraction

0 – no 1559 91.71%

1 – yes 134 7.88%

Missing 7 0.41%

3.30 Obstructive chronic bronchitis in the anamnesis (zab_leg_02)

Binary attribute. Value # Cases Fraction

0 – no 1572 92.47%

1 – yes 121 7.12%

Missing 7 0.41%

3.31 Bronchial asthma in the anamnesis (zab_leg_03)

Binary attribute. Value # Cases Fraction

0 – no 1656 97.41%

1 – yes 37 2.18%

Missing 7 0.41%

3.32 Pulmonary tuberculosis in the anamnesis (zab_leg_06)

Binary attribute. Value # Cases Fraction

0 – no 1684 99.06%

1 – yes 9 0.53%

Missing 7 0.41%

3.33 Systolic blood pressure according to Emergency Cardiology Team (S_AD_KBRIG)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 0 260 136.91 34.97 1076 63.29%

3.34 Diastolic blood pressure according to Emergency Cardiology Team (D_AD_KBRIG)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 0 190 81.39 19.73 1076 63.29%

3.35 Systolic blood pressure according to intensive care unit (S_AD_ORIT)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 0 260 134.59 31.34 267 15.71%

3.36 Diastolic blood pressure according to intensive care unit (D_AD_ORIT)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 0 190 82.75 18.31 267 15.71%

3.37 Pulmonary edema at the time of admission to intensive care unit (O_L_POST)

Binary attribute. Value # Cases Fraction

0 – no 1578 92.82%

1 – yes 110 6.47%

Missing 12 0.71%

3.38 Cardiogenic shock at the time of admission to intensive care unit (K_SH_POST)

Binary attribute. Value # Cases Fraction

0 – no 1639 96.41%

1 – yes 46 2.71%

Missing 15 0.88%

3.39 Paroxysms of atrial fibrillation at the time of admission to intensive care unit, (or at a pre-hospital stage) (MP_TP_POST)

Binary attribute. Value # Cases Fraction

0 – no 1572 92.47%

1 – yes 114 6.71%

Missing 14 0.82%

3.40 Paroxysms of supraventricular tachycardia at the time of admission to intensive care unit, (or at a pre-hospital stage) (SVT_POST)

Binary attribute. Value # Cases Fraction

0 – no 1680 98.82%

1 – yes 8 0.47%

Missing 12 0.71%

3.41 Paroxysms of ventricular tachycardia at the time of admission to intensive care unit, (or at a pre-hospital stage) (GT_POST)

Binary attribute. Value # Cases Fraction

0 – no 1680 98.82%

1 – yes 8 0.47%

Missing 12 0.71%

3.42 Ventricular fibrillation at the time of admission to intensive care unit, (or at a pre-hospital stage) (FIB_G_POST)

Binary attribute. Value # Cases Fraction

0 – no 1673 98.41%

1 – yes 15 0.88%

Missing 12 0.71%

3.43 Presence of an anterior myocardial infarction (left ventricular) (ECG changes in leads V1 – V4 ) (ant_im)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction Dummy

0 – there is no infarct in this location 660 38.82% 0 0 0 0

1 – QRS has no changes 392 23.06% 1 0 0 0

2 – QRS is like QR-complex 39 2.29% 1 1 0 0

3 – QRS is like Qr-complex 34 2.00% 1 1 1 0

4 – QRS is like QS-complex 492 28.94% 1 1 1 1

Missing 83 4.88%

3.44 Presence of a lateral myocardial infarction (left ventricular) (ECG changes in leads V5 – V6, I, AVL) (lat_im)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction Dummy

0 – there is no infarct in this location 576 33.88% 0 0 0 0

1 – QRS has no changes 838 49.29% 1 0 0 0

2 – QRS is like QR-complex 97 5.71% 1 1 0 0

3 – QRS is like Qr-complex 72 4.24% 1 1 1 0

4 – QRS is like QS-complex 37 2.18% 1 1 1 1

Missing 80 4.71%

3.45 Presence of an inferior myocardial infarction (left ventricular) (ECG changes in leads III, AVF, II). (inf_im)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction Dummy

0 – there is no infarct in this location 937 55.12% 0 0 0 0

1 – QRS has no changes 195 11.47% 1 0 0 0

2 – QRS is like QR-complex 191 11.24% 1 1 0 0

3 – QRS is like Qr-complex 121 7.12% 1 1 1 0

4 – QRS is like QS-complex 176 10.35% 1 1 1 1

Missing 80 4.71%

3.46 Presence of a posterior myocardial infarction (left ventricular) (ECG changes in V7 – V9, reciprocity changes in leads V1 – V3)

(post_im)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction Dummy

0 – there is no infarct in this location 1370 80.59% 0 0 0 0

1 – QRS has no changes 157 9.24% 1 0 0 0

2 – QRS is like QR-complex 52 3.06% 1 1 0 0

3 – QRS is like Qr-complex 35 2.06% 1 1 1 0

4 – QRS is like QS-complex 14 0.82% 1 1 1 1

Missing 72 4.24%

0 – there is no infarct in this location

3.47 Presence of a right ventricular myocardial infarction (IM_PG_P)

Binary attribute. Value # Cases Fraction

0 – no 1649 97.00%

1 – yes 50 2.94%

Missing 1 0.06%

3.48 ECG rhythm at the time of admission to hospital – sinus (with a heart rate 60-90) (ritm_ecg_p_01)

Binary attribute. Value # Cases Fraction

0 – no 519 30.53%

1 – yes 1029 60.53%

Missing 152 8.94%

3.49 ECG rhythm at the time of admission to hospital – atrial fibrillation (ritm_ecg_p_02)

Binary attribute. Value # Cases Fraction

0 – no 1453 85.47%

1 – yes 95 5.59%

Missing 152 8.94%

3.50 ECG rhythm at the time of admission to hospital – atrial (ritm_ecg_p_04)

Binary attribute. Value # Cases Fraction

0 – no 1525 89.71%

1 – yes 23 1.35%

Missing 152 8.94%

3.51 ECG rhythm at the time of admission to hospital – idioventricular (ritm_ecg_p_06)

Binary attribute. Value # Cases Fraction

0 – no 1547 91.00%

1 – yes 1 0.06%

Missing 152 8.94%

3.52 ECG rhythm at the time of admission to hospital – sinus with a heart rate above 90 (tachycardia) (ritm_ecg_p_07)

Binary attribute. Value # Cases Fraction

0 – no 1195 70.29%

1 – yes 353 20.76%

Missing 152 8.94%

3.53 ECG rhythm at the time of admission to hospital – sinus with a heart rate below 60 (bradycardia) (ritm_ecg_p_08)

Binary attribute. Value # Cases Fraction

0 – no 1502 88.35%

1 – yes 46 2.71%

Missing 152 8.94%

3.54 Premature atrial contractions on ECG at the time of admission to hospital (n_r_ecg_p_01)

Binary attribute. Value # Cases Fraction

0 – no 1527 89.82%

1 – yes 58 3.41%

Missing 115 6.76%

3.55 Frequent premature atrial contractions on ECG at the time of admission to hospital (n_r_ecg_p_02)

Binary attribute. Value # Cases Fraction

0 – no 1577 92.76%

1 – yes 8 0.47%

Missing 115 6.76%

3.56 Premature ventricular contractions on ECG at the time of admission to hospital (n_r_ecg_p_03)

Binary attribute. Value # Cases Fraction

0 – no 1381 81.24%

1 – yes 204 12.00%

Missing 115 6.76%

3.57 Frequent premature ventricular contractions on ECG at the time of admission to hospital (n_r_ecg_p_04)

Binary attribute. Value # Cases Fraction

0 – no 1516 89.18%

1 – yes 69 4.06%

Missing 115 6.76%

3.58 Paroxysms of atrial fibrillation on ECG at the time of admission to hospital (n_r_ecg_p_05)

Binary attribute. Value # Cases Fraction

0 – no 1515 89.12%

1 – yes 70 4.12%

Missing 115 6.76%

3.59 Persistent form of atrial fibrillation on ECG at the time of admission to hospital (n_r_ecg_p_06)

Binary attribute. Value # Cases Fraction

0 – no 1553 91.35%

1 – yes 32 1.88%

Missing 115 6.76%

3.60 Paroxysms of supraventricular tachycardia on ECG at the time of admission to hospital (n_r_ecg_p_08)

Binary attribute. Value # Cases Fraction

0 – no 1581 93.00%

1 – yes 4 0.24%

Missing 115 6.76%

3.61 Paroxysms of ventricular tachycardia on ECG at the time of admission to hospital (n_r_ecg_p_09)

Binary attribute. Value # Cases Fraction

0 – no 1583 93.12%

1 – yes 2 0.12%

Missing 115 6.76%

3.62 Ventricular fibrillation on ECG at the time of admission to hospital (n_r_ecg_p_10)

Binary attribute. Value # Cases Fraction

0 – no 1583 93.12%

1 – yes 2 0.12%

Missing 115 6.76%

3.63 Sinoatrial block on ECG at the time of admission to hospital (n_p_ecg_p_01)

Binary attribute. Value # Cases Fraction

0 – no 1583 93.12%

1 – yes 2 0.12%

Missing 115 6.76%

3.64 First-degree AV block on ECG at the time of admission to hospital (n_p_ecg_p_03)

Binary attribute. Value # Cases Fraction

0 – no 1553 91.35%

1 – yes 32 1.88%

Missing 115 6.76%

3.65 Type 1 Second-degree AV block (Mobitz I/Wenckebach) on ECG at the time of admission to hospital (n_p_ecg_p_04)

Binary attribute. Value # Cases Fraction

0 – no 1580 92.94%

1 – yes 5 0.29%

Missing 115 6.76%

3.66 Type 2 Second-degree AV block (Mobitz II/Hay) on ECG at the time of admission to hospital (n_p_ecg_p_05)

Binary attribute. Value # Cases Fraction

0 – no 1583 93.12%

1 – yes 2 0.12%

Missing 115 6.76%

3.67 Third-degree AV block on ECG at the time of admission to hospital (n_p_ecg_p_06)

Binary attribute. Value # Cases Fraction

0 – no 1558 91.65%

1 – yes 27 1.59%

Missing 115 6.76%

3.68 LBBB (anterior branch) on ECG at the time of admission to hospital (n_p_ecg_p_07)

Binary attribute. Value # Cases Fraction

0 – no 1483 87.24%

1 – yes 102 6.00%

Missing 115 6.76%

3.69 LBBB (posterior branch) on ECG at the time of admission to hospital (n_p_ecg_p_08)

Binary attribute. Value # Cases Fraction

0 – no 1578 92.82%

1 – yes 7 0.41%

Missing 115 6.76%

3.70 Incomplete LBBB on ECG at the time of admission to hospital (n_p_ecg_p_09)

Binary attribute. Value # Cases Fraction

0 – no 1575 92.65%

1 – yes 10 0.59%

Missing 115 6.76%

3.71 Complete LBBB on ECG at the time of admission to hospital (n_p_ecg_p_10)

Binary attribute. Value # Cases Fraction

0 – no 1551 91.24%

1 – yes 34 2.00%

Missing 115 6.76%

3.72 Incomplete RBBB on ECG at the time of admission to hospital (n_p_ecg_p_11)

Binary attribute. Value # Cases Fraction

0 – no 1557 91.59%

1 – yes 28 1.65%

Missing 115 6.76%

3.73 Complete RBBB on ECG at the time of admission to hospital (n_p_ecg_p_12)

Binary attribute. Value # Cases Fraction

0 – no 1507 88.65%

1 – yes 78 4.59%

Missing 115 6.76%

3.74 Fibrinolytic therapy by Сеliasum 750k IU (fibr_ter_01)

Binary attribute. Value # Cases Fraction

0 – no 1677 98.65%

1 – yes 13 0.76%

Missing 10 0.59%

3.75 Fibrinolytic therapy by Сеliasum 1m IU (fibr_ter_02)

Binary attribute. Value # Cases Fraction

0 – no 1674 98.47%

1 – yes 16 0.94%

Missing 10 0.59%

3.76 Fibrinolytic therapy by Сеliasum 3m IU (fibr_ter_03)

Binary attribute. Value # Cases Fraction

0 – no 1622 95.41%

1 – yes 68 4.00%

Missing 10 0.59%

3.77 Fibrinolytic therapy by Streptase (fibr_ter_05)

Binary attribute. Value # Cases Fraction

0 – no 1686 99.18%

1 – yes 4 0.24%

Missing 10 0.59%

3.78 Fibrinolytic therapy by Сеliasum 500k IU (fibr_ter_06)

Binary attribute. Value # Cases Fraction

0 – no 1681 98.88%

1 – yes 9 0.53%

Missing 10 0.59%

3.79 Fibrinolytic therapy by Сеliasum 250k IU (fibr_ter_07)

Binary attribute. Value # Cases Fraction

0 – no 1684 99.06%

1 – yes 6 0.35%

Missing 10 0.59%

3.80 Fibrinolytic therapy by Streptodecase 1.5m IU (fibr_ter_08)

Binary attribute. Value # Cases Fraction

0 – no 1688 99.29%

1 – yes 2 0.12%

Missing 10 0.59%

3.81 Hypokalemia ( < 4 mmol/L) (GIPO_K)

Binary attribute. Value # Cases Fraction

0 – no 797 46.88%

1 – yes 534 31.41%

Missing 369 21.71%

3.82 Serum potassium content (K_BLOOD) (mmol/L)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 2.3 8.2 4.19 0.75 371 21.82%

3.83 Increase of sodium in serum (more than 150 mmol/L) (GIPER_Na)

Binary attribute. Value # Cases Fraction

0 – no 1295 76.18%

1 – yes 30 1.76%

Missing 375 22.06%

3.84 Serum sodium content (Na_BLOOD) (mmol/L)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 117 169 136.55 6.51 375 22.06%

3.85 Serum AlAT content (ALT_BLOOD) (IU/L)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 0.03 3 0.48 0.39 284 16.71%

3.86 Serum AsAT content (AST_BLOOD) (IU/L)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 0.04 2.15 0.26 0.2 285 16.67%

3.87 Serum CPK content (KFK_BLOOD) (IU/L)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 1.2 3.6 2 0.95 1696 99.76%

3.88 White blood cell count (billions per liter) (L_BLOOD)

Numeric attribute. Feature Min Max Mean STD Missing cases Missing fraction

Value 2 27.9 8.78 3.40 125 7.35%

3.89 ESR (Erythrocyte sedimentation rate) (ROE) (мм)

Numeric attribute.

Feature Min Max Mean STD Missing cases Missing fraction

Value 1 140 13.44 11.29 203 19.94%

3.90 Time elapsed from the beginning of the attack of CHD to the hospital (TIME_B_S)

Ordinal attribute. Possible usage of cumulative dummy coding. Value # Cases Fraction Dummy

1 – less than 2 hours 198 11.65% 0 0 0 0 0 0 0 0

2 – 2-4 hours 360 21.18% 1 0 0 0 0 0 0 0

3 – 4-6 hours 175 10.29% 1 1 0 0 0 0 0 0

4 – 6-8 hours 87 5.12% 1 1 1 0 0 0 0 0

5 – 8-12 hours 92 5.41% 1 1 1 1 0 0 0 0

6 – 12-24 hours 151 8.88% 1 1 1 1 1 0 0 0

7 – more than 1 days 141 8.29% 1 1 1 1 1 1 0 0

8 – more than 2 days 101 5.94% 1 1 1 1 1 1 1 0

9 – more than 3 days 269 15.82% 1 1 1 1 1 1 1 1

Missing 126 7.41%

3.91 Use of opioid drugs by the Emergency Cardiology Team (NA_KB)

Binary attribute. Value # Cases Fraction

0 – no 425 25.00%

1 – yes 618 36.35%

Missing 657 38.65%

3.92 Use of NSAIDs by the Emergency Cardiology Team (NOT_NA_KB)

Binary attribute. Value # Cases Fraction

0 – no 313 18.41%

1 – yes 700 41.18%

2?? 1 0.06%

Missing 375 22.06%

3.93 Use of lidocaine by the Emergency Cardiology Team (LID_KB)

Binary attribute. Value # Cases Fraction

0 – no 627 36.88%

1 – yes 396 23.29%

Missing 677 39.82%

3.94 Use of liquid nitrates in the ICU (NITR_S)

Binary attribute. Value # Cases Fraction

0 – no 1496 88.00%

1 – yes 194 11.41%

10 1 0.06%

Missing 9 0.53%

3.95 Use of lidocaine in the ICU (LID_S_n)

Binary attribute.

Value # Cases Fraction

0 – no 1211 71.24%

1 – yes 479 28.18%

Missing 10 0.59%

3.96 Use of beta-blockers in the ICU (B_BLOK_S_n)

Binary attribute. Value # Cases Fraction

0 – no 1474 86.71%

1 – yes 215 12.65%

Missing 11 0.65%

3.97 Use of calcium channel blockers in the ICU (ANT_CA_S_n)

Binary attribute. Value # Cases Fraction

0 – no 562 33.06%

1 – yes 1125 66.18%

Missing 13 0.76%

3.98 Use of а anticoagulants (heparin) in the ICU (GEPAR_S_n)

Binary attribute. Value # Cases Fraction

0 – no 480 28.24%

1 – yes 1203 70.76%

Missing 17 1.00%

3.99 Use of acetylsalicylic acid in the ICU (ASP_S_n)

Binary attribute. Value # Cases Fraction

0 – no 431 25.35%

1 – yes 1252 73.65%

Missing 17 1.00%

3.100 Use of Ticlid in the ICU (TIKL_S_n)

Binary attribute. Value # Cases Fraction

0 – no 1654 97.29%

1 – yes 30 1.76%

Missing 16 0.94%

3.101 Use of Trental in the ICU (TRENT_S_n)

Binary attribute. Value # Cases Fraction

0 – no 1343 79.00%

1 – yes 341 20.06%

Missing 16 0.94%

4 Input feature measured before end of the first day (24 hours after admission to the hospital)

4.1 Relapse of the pain in the first hours of the hospital period (R_AB_1_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – there is no relapse 1282 75.41%

1 – only one 298 17.53%

2 – 2 times 78 4.59%

3 – 3 or more times 26 1.53%

Missing 16 0.94%

4.2 Use of opioid drugs in the ICU in the first hours of the hospital period (NA_R_1_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – no 1108 65.18%

1 – once 409 24.06%

2 – twice 132 7.76%

3 – three times 35 2.06%

4 – four times 11 0.65%

Missing 5 0.29%

4.3 Use of NSAIDs in the ICU in the first hours of the hospital period (NOT_NA_1_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – no 1237 72.76%

1 – once 376 22.12%

2 – twice 53 3.12%

3 – three times 17 1.00%

4 – four or more times 7 0.41%

Missing 10 0.59%

5 Input feature measured before end of the second day (48 hours after admission to the hospital)

5.1 Relapse of the pain in the second day of the hospital period (R_AB_2_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – there is no relapse 1414 83.18%

1 – only one 133 7.82%

2 – 2 times 44 2.59%

3 – 3 or more times 1 0.06%

Missing 108 6.35%

5.2 Use of opioid drugs in the ICU in the second day of the hospital period (NA_R_2_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – no 1474 86.71%

1 – once 87 5.12%

2 – twice 30 1.76%

3 – three times 1 0.06%

Missing 108 6.35%

5.3 Use of NSAIDs in the ICU in the second day of the hospital period (NOT_NA_2_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – no 1454 85.53%

1 – once 95 5.59%

2 – twice 38 2.24%

3 – three times 3 0.18%

Missing 110 6.47%

6 Input feature measured before end of the third day (72 hours after admission to the hospital)

6.1 Relapse of the pain in the third day of the hospital period (R_AB_3_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – there is no relapse 1469 86.41%

1 – only one 86 5.06%

2 – 2 times 15 0.88%

3 – 3 or more times 2 0.12%

Missing 1469 86.41%

6.2 Use of opioid drugs in the ICU in the third day of the hospital period (NA_R_3_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – no 1493 87.82%

1 – once 60 3.53%

2 – twice 16 0.94%

Missing 131 7.71%

6.3 Use of NSAIDs in the ICU in the third day of the hospital period (NOT_NA_3_n)

Ordinal attribute can be interpreted as numerical. Possible encoding as is or cumulative

dummy coding. Value # Cases Fraction

0 – no 1474 86.71%

1 – once 57 3.35%

2 – twice 38 2.24%

Missing 131 7.71%