Table 2.
Study characteristics of the urban adolescents (n 416), Gombak District, Selangor, Malaysia, July 2011–March 2012
| Characteristic | n | % | Mean | sd |
|---|---|---|---|---|
| Sociodemographic background | ||||
| Age (years) | 12·4 | 0·5 | ||
| 12 | 242 | 58·2 | ||
| 13 | 174 | 41·8 | ||
| Sex | ||||
| Male | 161 | 38·7 | ||
| Female | 255 | 61·3 | ||
| Monthly household income (RM)† | 4383·1 ($US 1371·4) | 4110·7 ($US 1286·2) | ||
| Father's education level‡ | ||||
| Secondary education and below | 195 | 50·0 | ||
| Tertiary education | 195 | 50·0 | ||
| Mother's education level§ | ||||
| Secondary education and below | 225 | 55·3 | ||
| Tertiary education | 182 | 44·7 | ||
| Anthropometric measures | ||||
| Weight (kg) | 47·7 | 14·0 | ||
| Height (cm) | 152·1 | 7·2 | ||
| BMI (kg/m2) | 20·5 | 5·2 | ||
| BMI-for-age Z-score | 0·3 | 1·6 | ||
| Cognitive ability | ||||
| Perceptual reasoning | 49·8 | 9·6 | ||
| Processing speed | 55·2 | 7·7 | ||
| Working memory | 53·4 | 8·8 | ||
| Perceptual organization | 45·5 | 8·8 | ||
| General cognitive ability | 101·8 | 12·4 |
RM, Malaysian Ringgit.
†Monthly household income, n 393.
‡Father's education level, n 390.
§Mother's education level, n 407.