Table 1 Distribution of sample according to selected socio-demographic variables
Variable | n | % |
|---|---|---|
Total | 784 | 100 |
Age | Â | Â |
  48-60 months | 466 | 59.4 |
  61-72 months | 318 | 40.6 |
  Mean age (SD) | 57.30 | (6.24) |
Gender | Â | Â |
  Boys | 383 | 48.9 |
  Girls | 401 | 51.1 |
Ethnicity | Â | Â |
  Sinhala | 704 | 89.8 |
  Muslim | 62 | 7.9 |
  Tamil | 18 | 2.3 |
  Family income (Sri Lankan Rupees) |  |  |
  <10,000 | 416 | 53.6 |
  10,001-20,000 | 221 | 28.5 |
  20,001 and above | 138 | 17.8 |
  non-response | 9 |  |
  Mean income (SD) | 14967.03 | (10449.24) |
Education level of mother | Â | Â |
  ≤ grade 5 | 35 | 4.5 |
  grade 6-12 | 636 | 81.5 |
  > grade 12 (degree/diploma) | 109 | 14.0 |
  non-response | 4 |  |
Education level of/ father | Â | Â |
  ≤ grade 5 | 52 | 6.7 |
  grade 6-12 | 656 | 84.1 |
  > grade 12 (degree/diploma) | 72 | 9.2 |
  non-response | 4 |  |