Table 3.
Modelling risk of obesity from 16–18 years based on body mass index status at 1–2 years and 4–8 years among South African boys (n = 566) and girls (n = 606), Birth‐to‐Twenty Cohort †
| Odds Ratio | 95% confidence interval | |
|---|---|---|
| Girls | ||
| Infancy/toddlerhood (1–2 years) | ||
| Overweight | 3.6*** | 1.8, 7.2 |
| Obese | 8.0*** | 3.7, 17.6 |
| Early childhood (4–8 years) | ||
| Overweight | 6.8*** | 3.3, 13.9 |
| Obese | 42.3*** | 15.0, 118.8 |
| Boys | ||
| Infancy/toddlerhood (1–2 years) | ||
| Overweight | 5.6** | 1.7, 18.0 |
| Obese | 3.4 | 0.6, 17.8 |
| Early childhood (4–8 years) | ||
| Overweight | 2.1 | 0.5, 8.4 |
| Obese | 19.7*** | 5.1, 75.9 |
†Models the risk of being obese at late adolescence (16 years, 17 years and 18 years) based on status at the infant/toddler (1 year or 2 years) or early childhood periods (4 years, 5 years or 8 years), with the referent category being those who were classified as normal body mass index (not overweight or obese) at that time period. *P‐value <0.05; **P‐value <0.01; ***P‐value <0.001.