Table 1.

Demographic details of the study patients.

	Control	Intervention	P value
Number of patients	38	38
Age (years)
mean (± s.d.)	50.7 (± 15.7)	49.3 (± 16.3)	0.705§
range	(25–81)	(21–83)
Sex (%)			0.800†
Female	12 (31.6%)	10 (26.3%)
Male	26 (68.4%)	28 (73.7%)
Social habits
Smoking			0.287†
current	20 (52.6%)	21 (55.3%)
former	8 (13.2%)	12 (31.6%)
never	10 (34.2%)	5 (13.2%)
Alcohol intake			0.060†
weekly	15 (39.5%)	23 (60.5%)
occasionally	5 (13.2%)	7 (18.4%)
none	18 (47.4%)	8 (21.1%)

^†chi-squared test;

^§Student's t-test.