Table 3.

Estimated overall intervention effects (regression coefficients (b) with 95 % confidence intervals (CI)) for fruit and vegetable intake and consumption of unhealthy snacks and for each follow-up assessment based on mixed models

	model 1a				model 2b
	b	95 % CI		p-value	b	95 % CI		p-value
Fruit and vegetable intake (portions/day)
Overall effect	0.44	(0.10;	0.77)	0.012	0.34	(−0.01;	0.68)	0.057
Follow-up 1 (2002)	0.65	(0.14;	1.16)	0.012	0.51	(−0.02;	1.04)	0.059
Follow-up 2 (2005)	0.28	(−0.24;	0.79)	0.289	0.15	(−0.38;	0.68)	0.572
Follow-up 3 (2009)	0.35	(−0.13;	0.84)	0.152	0.31	(−0.19;	0.82)	0.223
Fruit and vegetable intake (times/week)
Overall effect	1.31	(0.20;	2.43)	0.021	1.52	(0.40;	2.65)	0.008
Follow-up 1 (2002)	1.38	(−0.21;	2.97)	0.089	1.53	(−0.06;	3.11)	0.059
Follow-up 2 (2005)	1.74	(0.14;	3.33)	0.033	1.99	(0.40;	3.58)	0.014
Follow-up 3 (2009)	0.88	(−0.63;	2.39)	0.254	1.09	(−0.42;	2.60)	0.158
Unhealthy snacks (times/week) Lower educated
Overall effect	−1.23	(−2.24;	−0.22)	0.017	−1.54	(−2.54;	−0.53)	0.003
Follow-up 1 (2002)	−0.78	(−2.28;	0.71)	0.302	−0.87	(−2.32;	0.57)	0.234
Follow-up 2 (2005)	−0.97	(−2.46;	0.52)	0.202	−1.65	(−3.09;	−0.20)	0.026
Follow-up 3 (2009)	−1.88	(−3.31;	−0.45)	0.010	−2.02	(−3.41;	−0.64)	0.004
Higher educated
Overall effect	−0.21	(−1.06;	0.63)	0.617	−0.22	(−1.06;	0.62)	0.606
Follow-up 1 (2002)	−0.51	(−1.72;	0.70)	0.409	−0.53	(−1.74;	0.69)	0.395
Follow-up 2 (2005)	−0.60	(−1.82;	0.61)	0.331	−0.50	(−1.71;	0.72)	0.425
Follow-up 3 (2009)	0.44	(−0.72;	1.61)	0.445	0.35	(−0.82;	1.52)	0.558

^aadjusted for baseline intake and with random intercept for individual and school

^bfurther adjusted for sex and parental education