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Table 4 Within-dyad relationships between older sibling and younger sibling physical activity and sedentary behaviors by time period

From: Sibship, physical activity, and sedentary behavior: a longitudinal, observational study among Mexican-heritage sibling dyads

  Younger sibling
Model: Active minutes Model: MET-minutes Model: Sitting minutes Model: Screen time
B (SE) p B (SE) p B (SE) p B (SE) p
Summer Intercept 735.0 (183.5) < 0.001 3801.6 (973.4) < 0.001 913.0 (283.9) 0.002 754.1 (126.0) < 0.001
  Older sibling
 Active minutes 0.44 (0.14) 0.004   
 MET-minutes   0.45 (0.15) 0.003  
 Sitting minutes    0.37 (0.19) 0.05  
 Screen time minutes   0.19 (0.10) 0.07
Adjusted R 2 0.09 0.09 0.03 0.03
Fall Intercept 779.1 (139.1) < 0.001 4192.3 (702.1) < 0.001 896.6 (124.0) < 0.001 529.3 (78.4) < 0.001
  Older sibling
 Active minutes 0.14 (0.13) 0.28  
 MET-minutes   0.13 (0.12) 0.28  
 Sitting minutes    0.23 (0.09) 0.01  
 Screen time minutes   0.23 (0.08) 0.004
  Adjusted R 2 0.002 0.002 0.07 0.08
  1. Notes: Active minutes were defined as a 7-day total of moderate and vigorous physical activities (MVPA). The Compendium of Metabolic Equivalents (MET) for children was used to calculate MVPA MET-minutes, with moderate physical activity defined as 3–6 metabolic equivalents and vigorous physical activity defined as > 6.0 metabolic equivalents. Sitting minutes were defined as a 7-day total of sedentary activities such as homework or television viewing, and screen time minutes were a subset of sitting minutes that involved the use of media like television viewing or texting