Table 1 Basic demographic information of the total of subjects included in the prospective study
Variable | Results (n and %) |
|---|---|
Sex | |
Male | 664 (57.0 %) |
Female | 502 (43.0 %) |
Age (years) | |
<5 | 152 (13.0 %) |
5–15 | 309 (26.5 %) |
15–35 | 321 (27.5 %) |
35–50 | 185 (16.0 %) |
>50 | 199 (17.0 %) |
Ethnics | |
White | 9 (0.8 %) |
Admixeda | 1151 (98.7 %) |
Black | 5 (0.4 %) |
Asian | 1 (0.1 %) |
Education | |
Illiterate | 259 (22.2 %) |
Elementary school | 792 (68 %) |
Middle school | 105 (9 %) |
Higher school | 10 (0.8 %) |
Occupation | |
Farmer/fisher | 457 (39.2 %) |
Urban employee | 26 (2.2 %) |
Housewife | 81 (6.9 %) |
Student | 375 (32.2 %) |
Retired | 40 (3.4 %) |
Unemployed | 10 (0.9 %) |
Other | 177 (15.2 %) |