There are four possible time moments for complication prediction: on base of the information known at 1. the time of admission to hospital: all i
There are four possible time moments for complication prediction: on base of the information known at 1. the time of admission to hospital: all input columns (2-112) except 93, 94, 95, 100, 101, 102, 103, 104, 105 can be used for prediction;
2. the end of the first day (24 hours after admission to the hospital): all input columns (2- 112) except 94, 95, 101, 102, 104, 105 can be used for prediction;
3. the end of the second day (48 hours after admission to the hospital) all input columns (2- 112) except 95, 102, 105 can be used for prediction;
4. the end of the third day (72 hours after admission to the hospital) all input columns (2- 112) can be used for prediction
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)
20
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 F IB
R _
P R
E D
S
P R
E D
S _
T A
H
JE L
U D
_ T
A H
F IB
R _
JE L
U D
A _
V _
B L
O K
O T
E K
_ L
A N C
R
A Z
R IV
D R
E S
S L
E R
Z S
N
R E
C _
IM
P _
IM _
S T
E N
L E
T _
IS
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
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
1 X X X X
17 X 5 X X
2 X X 1 X X X
7 X X
Cases F IB
R _
P R
E D
S
P R
E D
S _
T A
H
JE L
U D
_ T
A H
F IB
R _
JE L
U D
A _
V _
B L
O K
O T
E K
_ L
A N C
R
A Z
R IV
D R
E S
S L
E R
Z S
N
R E
C _
IM
P _
IM _
S T
E N
L E
T _
IS
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 F IB
R _
P R
E D
S
P R
E D
S _
T A
H
JE L
U D
_ T
A H
F IB
R _
JE L
U D
A _
V _
B L
O K
O T
E K
_ L
A N C
R
A Z
R IV
D R
E S
S L
E R
Z S
N
R E
C _
IM
P _
IM _
S T
E N
L E
T _
IS
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 F IB
R _
P R
E D
S
P R
E D
S _
T A
H
JE L
U D
_ T
A H
F IB
R _
JE L
U D
A _
V _
B L
O K
O T
E K
_ L
A N
C
R A
Z R
IV
D R
E S
S L
E R
Z S
N
R E
C _
IM
P _
IM _
S T
E N
L E
T _
IS
C o
m p
li c a ti
o n
s
4 X X X X 4
1 X X X X 4
Cases F IB
R _
P R
E D
S
P R
E D
S _
T A
H
JE L
U D
_ T
A H
F IB
R _
JE L
U D
A _
V _
B L
O K
O T
E K
_ L
A N
C
R A
Z R
IV
D R
E S
S L
E R
Z S
N
R E
C _
IM
P _
IM _
S T
E N
L E
T _
IS
C o
m p
li c a ti
o n
s
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 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 4
1 X X X X 4
1 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 4
1 X X X X 4
1 X X X X 4
1 X X X X 4
1 X X X X X 5
1 X X X X X 5
1 X X X X X 5
1 X X X X X 5
1 X X X X X 5
1 X X X X X 5
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 art
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