Table 5.
Regression coefficient, 95% confidence interval, and p value controlled for age and maturation in association of initial body mass index measurements with subsequent measurements for Ellisras preschool and primary school children
| Mean age (years) | Boys | Girls | ||||
|---|---|---|---|---|---|---|
| Beta | p value | 95% CI | Beta | p value | 95% CI | |
| Preschool children | ||||||
| 4.9 | 0.68 | 0.000 | 0.55-0.82 | 0.78 | 0.000 | 0.64-0.93 |
| 5.5 | 0.67 | 0.000 | 0.50-0.84 | 0.63 | 0.000 | 0.43-0.82 |
| 5.9 | 0.58 | 0.000 | 0.39-0.77 | 0.45 | 0.000 | 0.24-0.66 |
| 6.5 | 0.50 | 0.000 | 0.29-0.70 | 0.39 | 0.001 | 0.16-0.61 |
| 6.9 | 0.26 | 0.04 | 0.02-0.49 | 0.33 | 0.008 | 0.09-0.58 |
| 7.5 | 0.37 | 0.004 | 0.12-0.62 | 0.31 | 0.011 | 0.07-0.55 |
| 7.9 | 0.39 | 0.001 | 0.17-0.62 | 0.41 | 0.003 | 0.14-0.67 |
| 8.5 | 0.26 | 0.020 | 0.04-0.49 | 0.35 | 0.003 | 0.12-0.59 |
| 8.9 | 0.22 | 0.027 | 0.03-0.41 | 0.30 | 0.006 | 0.09-0.52 |
| 9.9 | 0.28 | 0.003 | 0.09-0.46 | 0.23 | 0.027 | 0.03-0.43 |
| 10.9 | 0.22 | 0.006 | 0.06-0.37 | 0.14 | 0.074 | -0.01-0.29 |
| 11.5 | 0.25 | 0.002 | 0.09-0.41 | 0.19 | 0.010 | 0.05-0.35 |
| Primary school children | ||||||
| 8.5 | 0.65 | 0.000 | 0.56-0.74 | 0.71 | 0.000 | 0.62-0.79 |
| 9.1 | 0.67 | 0.000 | 0.56-0.77 | 0.66 | 0.000 | 0.56-0.75 |
| 9.6 | 0.49 | 0.000 | 0.38-0.62 | 0.48 | 0.000 | 0.37-0.58 |
| 10.1 | 0.49 | 0.000 | 0.37-0.61 | 0.43 | 0.000 | 0.32-0.53 |
| 10.6 | 0.44 | 0.000 | 0.32-0.55 | 0.39 | 0.000 | 0.29-0.49 |
| 11.0 | 0.39 | 0.000 | 0.28-0.50 | 0.35 | 0.000 | 0.26-0.45 |
| 11.6 | 0.37 | 0.000 | 0.26-0.48 | 0.36 | 0.000 | 0.27-0.44 |
| 12.0 | 0.28 | 0.000 | 0.17-0.39 | 0.28 | 0.000 | 0.20-0.37 |
| 12.5 | 0.29 | 0.000 | 0.19-0.39 | 0.28 | 0.000 | 0.21-0.35 |
| 13.5 | 0.19 | 0.000 | 0.10-0.27 | 0.21 | 0.000 | 0.14-0.28 |
| 14.5 | 0.18 | 0.000 | 0.10-0.25 | 0.19 | 0.000 | 0.13-0.25 |
| 14.9 | 0.18 | 0.000 | 0.11-0.26 | 0.17 | 0.000 | 0.10-0.23 |
CI=Confidence interval