Table 1 Characteristics of the 2880 rural primary school children from North Central Province, Sri Lanka
| Â | N | % |
|---|---|---|
District | ||
 Anuradhapura | 1014 | 35.2 |
 Polonnaruwa | 1866 | 64.8 |
Education Division | ||
 Anuradhapura | 364 | 12.6 |
 Dibulagala | 517 | 18.0 |
 Higurakgoda | 818 | 28.4 |
 Kabathigollawa | 650 | 22.6 |
 Polonnaruwa | 531 | 18.4 |
Age category | ||
 5 years | 216 | 7.5 |
 6 years | 677 | 23.5 |
 7 years | 598 | 20.8 |
 8 years | 606 | 21.0 |
 9 years | 574 | 19.9 |
 10 years | 209 | 7.3 |
Sex | ||
 Female | 1412 | 49.0 |
 Male | 1453 | 50.5 |
Ethnicity | ||
 Sinhalese | 2298 | 86.7 |
 Moor/Malay | 347 | 13.1 |
 Tamil | 4 | 0.2 |
History of any chronic disease | ||
 Yes | 293 | 7.5 |
 No | 3597 | 92.5 |
Family history of CKD | ||
 No | 3353 | 85.3 |
 Yes | 580 | 14.7 |