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Table 3 Mixed linear regression analysis of resemblance of physical activity within families, within parent-child dyads, and within parent-child dyads by the age of the childa, N = 1837

From: Resemblance in accelerometer-assessed physical activity in families with children: the Lolland-Falster Health Study

  The total family
(N = 1837)
Parent-child
(dyads n = 558)
Age group 0–6 y
(dyads n = 126)
Age group 7–11 y
(dyads n = 257)
Age group 12–22 y
(dyads n = 271)
ICC 95% CI p value ICC 95% CI p value ICC 95% CI p value ICC 95% CI p value ICC 95% CI p value
CPM 0.12 (0.08; 0.19) < 0.01 0.02 (0.00; 0.62) 0.32 0.08 (0.01; 0.48) 0.39 0.03 0.06 (0.01; 0.36) 0.01
LPA 0.22 (0.17; 0.28) < 0.01 0.19 (0.12; 0.29) < 0.01 0.04 (0.00; 0.82) 0.36 0.17 (0.08; 0.32) < 0.01 0.17 (0.08; 0.32) < 0.01
MVPA 0.07 (0.03; 0.14) < 0.01 < 0.01 < 0.01 0.06 (0.01; 0.36) 0.23 0.12 (0.05; 0.29) 0.16
VPA 0.06 (0.02; 0.13) 0.01 < 0.01 < 0.01 0.02 0.07 (0.01; 0.33) 0.02
Sitting 0.21 (0.16; 0.27) < 0.01 0.13 (0.07; 0.24) < 0.01 0.10 (0.02; 0.43) 0.01 0.19 (0.10; 0.34) < 0.01 0.06 (0.01; 0.35) 0.01
Lying 0.22 (0.17; 0.28) < 0.01 0.23 (0.16; 0.32) < 0.01 0.30 (0.16; 0.48) 0.01 0.19 (0.10; 0.34) < 0.01 0.17 (0.09; 0.32) < 0.01
Sitting + lying 0.34 (0.28; 0.40) < 0.01 0.33 (0.26; 0.41) < 0.01 0.31 (0.18; 0.49) < 0.01 0.33 (0.23; 0.44) < 0.01 0.25 (0.16; 0.38) < 0.01
Standing 0.25 (0.19; 0.31) < 0.01 0.16 (0.09; 0.27) < 0.01 0.15 (0.04; 0.40) 0.20 0.24 (0.16; 0.34) < 0.01 0.16 (0.07; 0.31) 0.06
Walking 0.24 (0.19; 0.30) < 0.01 0.22 (0.14; 0.31) < 0.01 0.24 (0.11; 0.44) 0.01 0.39 (0.29; 0.49) < 0.01 0.12 (0.04; 0.30) < 0.01
Running 0.12 (0.08; 0.18) < 0.01 0.05 (0.01; 0.24) 0.12 0.15 (0.04; 0.40) 0.23 0.05 (0.00; 0.42) 0.40 0.08 (0.02; 0.30) 0.03
Biking 0.23 (0.18; 0.29) < 0.01 0.24 (0.17; 0.33) < 0.01 0.03 0.25 (0.16; 0.39) < 0.01 0.36 (0.26; 0.47) < 0.01
  1. aAdjusted for sex, age, parental education, and sex*age
  2. Significant p-values ≤0.05
  3. ICC Intraclass correlation coefficient, CI Confidence interval, CPM Counts per minute, LPA Light physical activity, MPA Moderate physical activity, MVPA Moderate-to-vigorous physical activity, VPA Vigorous physical activity
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