Table 2 Mean (± se) data for experimental group after 1 year and the internal non-concurrent control group (grade 2 at baseline examination)
Indicators | Experimental group (1) | Internal non-concurrent control group (Group C2) | Difference between groups (p-value) |
|---|---|---|---|
| Â | n = 168 | n = 133 | Â |
Mean age | 7.56 (0.04) | 7.47 (0.04) | Student-t NS |
% of boys | 50.6% (3.9) | 46.6% (4.3) | Chi-square NS |
Mean number of siblings | 3.12 (0.16) | 3.07 (0.16) | Student-t NS |
Prevalence of TV ownership | 70.4% (3.5) | 76.7% (3.7) | Chi-square NS |
Mean BMI | 14.88 (0.13) | 14.86 (0.12) | Student-t NS |
Prevalence of children categorized as below normal BMI | 27.8% (3.5) | 22.6% (3.6) | Chi-square NS |
Prevalence of children with moderate to heavy STH infection | 10.7% (2.4) | 12.4% (2.9%) | Chi-square NS |
Mean DMFS of permanent first molars | 1.54 (0.18) | 1.53 (0.20) | Student-t NS |
Mean PUFA of permanent first molars | 0.137 (0.03) | 0.188 (0.05) | Student-t NS |