Table 3.

Crude and adjusted odds ratios (95% CI) of practising moderate or vigorous physical activity and vigorous physical activity only

	Moderate or vigorous physical activity				Vigorous physical activity only
	ORa	95% CI	ORadjb	95% CI	ORa	95% CI	ORadjb	95% CI
Gender
Boys	1		1		1		1
Girls	0.60	0.57–0.65	0.63	0.56–0.71	0.44	0.42–0.48	0.41	0.37–0.44
Age
6–8	1		1		1		1
9–11	1.64	1.50–1.81	1.85	1.66–2.07	1.87	1.68–2.09	2.06	1.82–2.33
12–14	1.79	1.62–1.97	2.04	1.83–2.28	2.29	2.07–2.55	2.67	2.37–3.01
15–17	1.33	1.21–1.46	1.52	1.36–1.69	2.02	1.82–2.25	2.41	2.14–2.72
Geographical area
Northern and central regions	1		1		1		1
Southern and insular regions	0.40	0.37–0.43	0.48	0.45–0.52	0.42	0.39–0.45	0.46	0.42–0.50
Perceived health status
Less than good	1		1		1		1
Good or very good	1.32	1.14–1.53	1.39	1.17–1.66	1.27	1.07–1.50	1.45	1.19–1.77
Parental educational levelc
Low	1		1		1		1
Middle and high	2.00	1.87–2.15	1.80	1.40–2.33	1.79	1.66–1.93	1.37	1.24–1.52
Parental employmentc
Administrative/professional	1		1		1		1
Self-employed	0.66	0.60–0.72	0.84	0.76–0.93	0.77	0.70–0.84	0.91	0.82–1.01
Manual	0.47	0.43–0.51	0.71	0.64–0.78	0.57	0.53–0.63	0.77	0.70–0.87
Unemployed/housewife	0.26	0.21–0.31	0.43	0.34–0.56	0.30	0.23–0.40	0.46	0.32–0.66
Retired	0.66	0.45–0.98	0.80	0.49–1.29	0.66	0.43–1.01	0.94	0.56–1.56
Material resources
Less than good	1		1		1		1
Good or very good	1.87	1.72–2.03	1.47	1.33–1.62	1.77	1.61–1.95	1.44	1.28–1.61
Father’s practice of physical activity
No	1		1		1		1
Yes	2.43	2.23–2.64	1.63	1.48–1.79	1.77	1.61–1.95	1.44	1.28–1.61
Mother’s practice of physical activity
No	1		1		1		1
Yes	3.17	2.86–3.51	2.15	1.91–2.43	2.07	1.90–2.26	1.56	1.41–1.72
Girl*middle/high education			0.83	0.71–0.97

^aCrude odds ratio

^bAdjusted odds ratio: the model includes all variables reported in the table

^cThe highest level in one of the parents