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Fig. 2 | BMC Public Health

Fig. 2

From: Effects of a school-based physical activity intervention on academic performance in 14-year old adolescents: a cluster randomized controlled trial – the School in Motion study

Fig. 2

Intervention effect on academic performance in numeracy and reading stratified by study group compared with the control group. Each model contained fixed effects for intervention, time (baseline – follow-up), intervention x time interaction and random effects for school, class, and subject ID. CI = confidence interval; ICC = intraclass correlation coefficient (for school): N* indicates the number of participants in the analysis at baseline/follow-up in the intervention model and the control group

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