Table 1. Demographics of the study sample (n = 1812).

	Mean (SEM)
Age	13.42 (0.11)
	N (%)
Sex, males (%)	51.9
Ethnicity
Maori (indigenous)	17.6
European	8.4
Asian	11.6
Pacific	75.1
Body mass index by age group (kg/m2)
	Mean (SEM)
5–9	21.02 (0.27)
10–14	20.66 (0.18)
15–19	21.01 (0.23)
20–24	20.91 (0.30)

Values are represented as mean (SEM) unless otherwise stated