Variable                              Sex                                                                
       Male Female Total
   No      (%) No     (%) No     (%)
Age (yr)
<20
09      (42.9%) 12   (57.1%) 21  (100.0%)
21-40  11     (47.8%) 23    (52.2%) 34  (100.0%)
41-60  10     (76.9%) 03    (23.1%) 13  (100.0%)
>60  02     (28.6%) 05   (71.4%) 07  (100.0%)
Total 32     (42.7%) 43   (57.3%) 75  (100.0%)                             
Occupational status
Professionals
   02    (33.3%)   04    (66.7%)   06  (100.0%)
Skilled  05    (83.3%) 01   (16.7%) 06  (100.0%)
Unskilled  20    (37.7%) 33  (62.3%) 53  (100.0%)
Unemployed  07    (70.0%) 03  (30.0%) 30  (100.0%)
Total 34    (45.3%) 41  (54.7%) 75
Table 1: Demographic characteristics of study subjects by sex.