Table 2.

Overweight and obesity prevalence in adolescent females and males according to the type of secondary school they are attending in years 2009 and 2014

School	2009						2014
	females			males			females			males
	grammar (n = 1,371, 39%)	non-grammar (n = 1,259, 36%)	Δ non-grammar – grammar	grammar (n = 820, 24%)	non-grammar (n = 1,946, 58%)	Δ non-gramma –grammar	r grammar (n = 1549, 44%)	non-grammar (n = 1,585, 45 %)	Δ non-grammar – grammar	grammar (n = 939, 21%)	non-grammar (n = 3,060, 68%)	Δ non-grammar – grammar
Over-weight	16.8 (14.9–19.0)	28.7 (26.3–31.3)	11.9 (8.6–15.2) p < 0.001	22.3 (19.6–25.4)	31.6 (29.6–33.7)	9.3 (5.7–12.9) p < 0.001	17.9 (16.1–20.0)	29.7 (27.5–32.0)	11.8 (8.8–14.8) p < 0.001	20.4 (17.9–23.1)	33.6 (31.9–35.3)	13.2 (10.0–16.3) p < 0.001
Obesity	4.2 (3.3–5.5)	8.6 (7.1–10.3)	4.4 (2.4–6.3) p < 0.001	5.3 (3.9–7.1)	11.2(9.9–12.7)	5.9 (3.8–8.1) p < 0.001	3.3 (2.5–4.3)	7.8 (6.5–9.2)	4.4 (2.8–6.1) p < 0.001	4.0 (2.9–5.5)	12.0 (10.9–13.3)	8.0 (6.2–9.8) p < 0.001

Overweight and obesity prevalence is expressed as percentage and 95% confidence interval. Non-grammar school includes vocational and technical/professional schools. Δ – difference.