Table 1 Sex, age and grade distributions of the selected and examined population
| Â | Â | Examined population | Not examined population | Enumerated population | Pvalue |
|---|---|---|---|---|---|
(N, %) | (N, %) | (N, %) | |||
Sex | Male | 5508 (57.91) | 102 (63.35) | 5610 (58.00) | 0.1649 |
Female | 4004 (42.09) | 59 (36.65) | 4063 (42.00) | ||
Age (y) | 7–8 | 2985 (31.38)* | 40 (24.84) | 3025 (31.27) | 0.0261 |
9-–10 | 3495 (36.74) | 54 (33.54) | 3549 (36.69) | ||
11–12 | 3032 (31.88)†| 67 (41.61) | 3099 (32.04) | ||
Grade | 1 | 2274 (23.91) | 23 (14.29) | 1857 (19.20) | 0.0108 |
2 | 2004 (21.07) | 41 (25.47) | 1722 (17.80) | ||
3 | 1721 (18.09) | 31 (19.25) | 3025 (31.27) | ||
4 | 1831 (19.25) | 26 (16.15) | 3549 (36.69) | ||
5 | 1682 (17.68) | 40 (24.84) | 3099 (32.04) | ||
All | 9512 (100.00) | 161 (100.00) | 9673 (100.00) | Â | |