Table 2. Prevalence rates and confidence intervals for poor self-rated health among adolescents by lifestyle, psychological health, anthropometry, and age group; Belo Horizonte, 2008–2009.

		11 to 13 years			14 to 17 years
	Characteristics	(n = 435)			(n = 600)
		%	CI 95%	P-value #	%	CI 95%	P-value #
LIFESTYLE
Consumes fruit	≥ 5 times/week	4.55	0.12–8,98	0.17	7.19	3.72–10.67	0.002
	< 5 times/week	9.54	4.76–14.32		16.81	12.24–21.38
Breakfast	Every day	8.32	3.42–13.21	0.49	12.90	8,68–17.13	0.53
	Sometimes, rarely, or never	6.27	2.75–9.79		15.01	9.81–20.20
Physical activity	Active	28.23	5.92–50.54	0.07	21.27	12.55–29.98	0.06
	Insufficiently active	8.41	2.23–14.58		13.26	8.94–17.57
	Inactive	6.73	1.93–11.52		9.24	3.48–14.99
Watches television	≤ 1 hour/day or not at all	9.56	1.37–17.74	0.81	9.53	4.94–14.11	0.20
	2 hours/day	6.97	0.00–14.22		12.65	4.82–20.48
	≥ 3 hours/day	7.09	3.05–11.13		16.30	11.15–21.46
Plays video games or uses the computer	≤ 1 hour/day or not at all	7.02	2.69–11.34	0.90	16.34	2.70–11.34	0.10
	2 hours/day	8.78	0.00–17.98		6.10	0.00–17.98
	≥ 3 hours/day	8.55	1.61–15.49		12.80	1.61–15.50
PSYCHOLOGICAL HEALTH
Psychological well-being	Very high	3.83	0.08–7.59	0.04	6.47	1.93–11.01	0.0009
	High	5.69	0.00–12.34		10.42	5.41–15.43
	Low	14.70	6.76–22.64		20.95	14.72–27.19
Life satisfaction	Positive	7.42	3.53–11.31	0.90	11.14	7.74–14.53	0.0001
	Negative	6.95	0.89–13.01		29.70	18.86–40.55
ANTHROPOMETRY
Body mass index	Normal weight	5.88	1.73–10.02	0.27	10.42	7.19–13.64	0.004
	Underweight	11.74	0.00–29.76		34.33	10.15–58.51
	Overweight	12.45	4,65–20.24		21.10	10.80–31.40

^#P-value obtained through Pearson's chi-square test.

CI—confidence interval.