| Variable | No. | Statistic | ||
| Age (years) | 410 | Mean | 4.5 | |
| Median | 4 | |||
| SD | 2.8 | |||
| Range | 1–10 | |||
| Gender | 410 | Male | 223 | 54% |
| Female | 187 | 46% | ||
| Ethnicity | 410 | Caucasian | 307 | 75% |
| Asian | 63 | 15% | ||
| African | 14 | 3% | ||
| Other | 11 | 3% | ||
| Indian | 8 | 2% | ||
| Polynesian | 7 | 2% | ||
| Height (cm) | 371* | Mean | 110 | |
| Median | 108 | |||
| SD | 19.6 | |||
| Range | 72–157 | |||
| BMI (kg/m2) | 371* | Mean | 17.1 | |
| Median | 16.6 | |||
| SD | 2.7 | |||
| Range | 11.9–34.7 | |||
| Measured weight (kg) | 410 | Mean | 21.2 | |
| Median | 18.2 | |||
| SD | 10.2 | |||
| Range | 7.5–71.4 | |||
| IQR (25th, 75th) | 13.7, 25.9 | |||
BMI, body mass index ; IQR, interquartile range; SD, standard deviation.
*Missing data.