Questionnaire A₂

Attributes relating to the questionnaire A₂ are lucidly given in the Table 1. Details about individual attributes are given in the Tables 2–5.

Table 1: Attributes relating to the questionnaire A₂

Identifier – column in the data matrix Entry	Meaning
BOLHR	chest pain
BOLDK	lower limbs pain
DUSNOST	asthma

Table 2: Frequency of the BOLHR attribute values

BOLHR – chest pain		Number of patients
Code	Meaning
1	not present	1 019
2	non-ischaemic	311
3	positive questionnaire for angina pectoris	52
4	other pains	19
5	possible myocardial infarction	3
6	not stated	13

Diagrams: bar, pie.

Table 3: Frequency of combinations of the attribute BOLDK values

BOLDK – DK pain		Number of patients
Code	Meaning
1	not present	1 282
2	non-ischaemic	113
3	claudication	17
4	not stated	5

Diagrams: bar, pie.

Table 4: Frequency of the attribute DUSNOST values

DUSNOST		Number of patients
Code	Meaning
1	not present	1 210
2	grade I.	182
3	grade II.	9
4	grade III.	1
6	not stated	15

Diagrams: bar, pie.