The Effect of Pulmonary Rehabilitation on Respiratory Functions, and the Quality of Life, following Coronary Artery Bypass Grafting: A Randomised Controlled Study

Table 2

Distribution of sociodemographic characteristics and smoking status of patients.

Characteristics	Intervention (PR) group ()		Control group ()
		%		%
Gender
Female	8	32	11	44
Male	17	68	14	56
Marital status
Married	23	92	21	84
Singles	2	8	4	16
Education status
Illiterate	3	12	7	28
Primary school	18	72	14	56
High school	1	4	4	16
University	3	12	—	—
Professional status
Retired	10	40	9	36
Housewife	7	28	11	44
Farmer	4	16	2	8
Civil servant	2	8	1	4
Other	2	8	2	8
Smoking status
Nonsmoker	9	36	13	52
Ex-smoker	8	32	10	40
Smoker	8	32	2	8
Age (years)
Smoking duration (years) ()
Cigarette usage per day (PCs) ()

SD: standard deviation.