TABLE 1.

Number of subjects within studied populations, stratified by age and gender

Age (yr)	No. of males	No. of females	Total no.
14	10	3	13
15	19	11	30
16	13	9	22
17	3	13	16
18	34	13	47
19	23	7	30
≥20	13	2	15
Total	115	58	173