Baseline 1 month 3 months 6 months 12 months Control group Mean (95% CI) 23.41 (22.79-24.03) 23.41 (22.79-24.03) 23.41 (22.79-24.03) 23.41 (22.79-24.03) 23.41 (22.79-24.03) Variance 14.55 13.49 13.49 13.49 15.03 Intervention group Mean (95% CI) 23.41 (22.79-24.03) 23.41 (22.79-24.03) 23.41 (22.79-24.03) 23.41 (22.79-24.03) 23.76 (23.07-24.44) Variance 14.55 13.49 13.49 13.49 13.86 Intervention group Covariances (and correlations) Baseline   13.47 (0.96) 13.22 (0.94) 12.74 (0.91) 12.87 (0.91) 1 month 13.61 (0.97)   12.92 (0.96) 12.92 (0.96) 12.92 (0.94) 3 months 12.92 (0.92) 12.92 (0.96)   12.92 (0.96) 12.92 (0.94) Control group 6 months 12.92 (0.92) 12.92 (0.96) 12.92 (0.96)   13.11 (0.96) 12 months 12.92 (0.87) 12.92 (0.91) 12.92 (0.91) 13.56 (0.95)

Table 4(a): Population mean (95%CI), variances and covariances from the model with BMI as outcome from baseline to 12 months.