Table 3

Changes in body mass index (BMI) and secondary anthropometrical outcomes by treatment group—Finnmark Activity School

 Change (95% CIs) at follow-upBetween-group differencep Value‡
Single-familyMultiple-familyCoefficient (95% CI)Group-by-time
BMI crude kg/m2
 3 months0.09 (−0.32 to 0.49)−0.26 (−0.67 to 0.14)−0.35 (−0.92 to 0.22)0.228
 12 months0.77 (0.35 to 1.19)0.37 (−0.04 to 0.78)−0.40 (−0.99 to 0.18)0.179
BMI adjusted kg/m2*
 3 months0.07 (−0.32 to 0.47)−0.27 (−0.67 to 0.12)−0.35 (−0.90 to 0.21)0.221
 12 months0.77 (0.37 to 1.17)0.38 (−0.02 to 0.78)−0.39 (−0.96 to 0.17)0.173
BMI SDS†
 3 months−0.05 (−0.12 to 0.01)−0.13 (−0.20 to −0.07)−0.08 (−0.17 to 0.01)0.097
 12 months−0.07 (−0.14 to −0.01)−0.16 (−0.23 to −0.09)−0.09 (−0.18 to 0.01)0.068
Waist circumference
 3 months−0.03 (−1.26 to 1.20)−1.45 (−2.67 to−0.23)−1.42 (−3.15 to 0.31)0.108
 12 months0.95 (−0.31 to 2.22)−0.94 (−2.18 to 0.3)−1.89 (−3.67 to −0.12)0.036
Skinfold
 3 months−1.52 (−2.32 to −0.73)−3.05 (−3.83 to −2.56)−1.52 (−2.64 to −0.40)0.008
 12 months−3.95 (−4.76 to −3.13)−4.5 (−5.3 to −3.70)−0.55 (−1.70 to 0.59)0.342
Body fat %
 3 months0.5 (−0.50 to 1.5)−0.3 (−1.29 to 0.68)−0.81 (−2.21 to 0.60)0.261
 12 months0.39 (0.64 to 1.42)−0.02 (−1.03 to 0.98)−0.41 (−1.85 to 1.02)0.574
  • Data based on mixed models analysis with single-family intervention as reference group.

  • *Analysis adjusted for values at baseline.

  • †According to British reference.17

  • ‡p Value for equality between groups, group-by-time effect.

  • BMI, body mass index; BMI SDS, BMI SD score.