Table 1 Baseline characteristics of the study group

Total students

1504 (48.9%)

1569 (51.1%)

3073 (100.0%)

Age

   Grade 1

510 (33.9%)

504 (32.1%)

1014 (33.0%)

   Grade 2

492 (32.7%)

533 (34.0%)

1025 (33.4%)

   Grade 3

502 (33.4%)

532 (33.9%)

1034 (33.6%)

Type of school

   Government

677 (45.0%)

817 (52.1%)

1494 (48.6%)

   Private

827 (55.0%)

752 (47.9%)

1579 (51.4%)

School area

   North

480 (31.9%)

376 (24.0%)

856 (27.9%)

   East

366 (24.3%)

566 (36.1%)

932 (30.3%)

   South

308 (20.5%)

335 (21.4%)

643 (20.9%)

   West

350 (23.3%)

292 (18.6%)

642 (20.9%)