Effectiveness of a universal parental support programme to promote health behaviours and prevent overweight and obesity in 6-year-old children in disadvantaged areas, the Healthy School Start Study II, a cluster-randomised controlled trial

Table 4 Effects of the intervention on BMI sds at T2 and T3

		T2					T3
	n	b	p	95 % CI	Between school class variance σ ²_u (s.e.)	n	b	p	95 % CI	Between school class variance σ ²_u (s.e.)
BMI sds^a	332	−0.03	0.46	−0.1 to 0.1	0.00 (0.00)	318	0.013	0.79	−0.1 to 0.1	0.08 (0.04)
BMI sds^a in overweight/obese^b children at T1	84	−0.02	0.75	−0.2 to 0.1	0.02 (0.10)	82	0.02	0.85	−0.2 to 0.2	0.14 (0.02)
BMI sds^a in overweight^b children at T1	47	0.12	0.23	−0.1 to 0.3	0.11 (0.02)	47	0.13	0.22	−0.1 to 0.3	0.13 (0.03)
BMI sds^a in obese^b children at T1	37	−0.21	0.03	−0.4 to -0.02	0.00 (0.00)	35	−0.05	0.79	−0.4 to 0.3	0.26 (0.06)

Results of Mixed Linear Regression adjusted for sex, parental education and baseline value
b = Regression coefficient (beta), p = between intervention and control groups, CI = 95 % confidence interval
Subjects are dependent observations between T1 and T2 and between T1 and T3
^aDefined according to Karlberg et al. 2001
^bDefined according to Cole et al. 2012

ISSN: 1479-5868