Table 4.

Crude prevalence ratio (PR) and confidence intervals (95% CI) for overweight and over-fat relative to chronological age, estimated biological maturity status and cardiorespiratory fitness categories for males (n = 626) and females (n = 580)

			Poisson regression
Sex	Variable	Category	Overweight and obese	Over-fat
			PR crude	PR crude
Males	Chronological age		0.99 (0.97-1.01)	0.96 (0.94-0.99)
	% Estimated mature stature	Late	1	1
		On time	1.23 (1.18-1.27)	1.11 (0.95-1.30)
		Early	1.52 (1.46-1.59)	1.29 (1.01-1.52)
	Cardiorespiratory fitness	Unfit	1	1
		Fit	0.86 (0.81-0.91)	0.86 (0.82-0.91)
Females	Chronological age		1.01 (0.99-1.03)	1.02 (0.99-1.04)
	% Estimated mature stature	Late	1	1
		On time	1.21 (1.15-1.27)	1.07 (1.01-1.13)
		Early	1.77 (1.67-1.86)	1.48 (1.38-1.60)
	Cardiorespiratory fitness	Unfit	1	1
		Fit	0.87 (0.82-0.91)	0.88 (0.84-0.93)

Overweight and obesity by IOTF criteria [17]; Over-fat, >25% for boys and >30% for girls [19,20]; CRF categories were based on age- and sex-specific cut-offs of the FITNESSGRAM [23].