Table 1.

Demographic characteristics of study population

Characteristic	Male (n=383)		Female (n=365)		Total (n=758)
	N	%	N	%	N	%
Age
≤20	65	17.0	64	17.1	129	17.0
21–25	120	31.3	160	42.7	280	36.9
26–30	114	29.8	102	27.2	216	28.5
31–35	70	18.3	38	10.2	108	14.2
36–40	14	3.7	11	2.9	25	3.3
Country
Asia	178	46.5	191	50.9	369	48.7
Africa	182	47.5	123	32.8	305	40.3
Europe	22	5.7	55	14.7	77	10.1
North and South America	1	0.3	6	1.6	7	0.9
Residence
Apartment / House	198	51.7	174	46.4	372	49.1
Dormitory	185	48.3	201	53.6	386	50.9
Chronic disease
Yes	13	3.4	19	5.1	32	4.2
No	370	96.6	356	94.9	726	95.8
Smoking
Yes	52	13.6	26	6.9	78	10.3
No	331	86.4	349	93.1	680	89.7