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Table 2 Tracking of total and prolonged sedentary time and their day-to-day variation

From: Tracking of total sedentary time and sedentary patterns in youth: a pooled analysis using the International Children’s Accelerometry Database (ICAD)

  Total sedentary time Prolonged sedentary time Day-to-day variation in total sedentary time Day-to-day variation in prolonged sedentary time
Total samplea (n = 5991) 0.48 [0.45; 0.50]
p < 0.0001
0.43 [0.41; 0.45]
p < 0.0001
0.04 [0.02; 0.07]
p < 0.0017
0.07 [0.04; 0.09]
p < 0.0001
Moderation by genderb
 Boys (n = 2757) 0.51 [0.47; 0.55]
p < 0.0001
0.46 [0.42; 0.49]
p < 0.0001
  
 Girls (n = 3234) 0.45 [0.42; 0.48]
p < 0.0001
0.42 [0.39; 0.44]
p < 0.0001
  
Moderation by age groupc
 During childhood (n = 1919) 0.62 [0.57; 0.67]
p < 0.0001
   0.02 [−0.03; 0.06]
P = 0.21
 During transition from childhood to adolescence (n = 4050) 0.44 [0.42; 0.46]
p < 0.0001
   0.09 [0.06; 0.12]
p < 0.0001
  1. Values are standardized regression coefficients with 95% confidence intervals. Tracking was defined as low when the standardized coefficient was < 0.3; moderate 0.3–0.6; and high > 0.6 ‘No evidence of tracking’ was assigned when the association between baseline and follow-up levels had a P ≥ 0.05
  2. aAnalyses were adjusted for gender, follow-up duration and baseline age. b Analyses were adjusted for follow-up duration and baseline age. c Analyses were adjusted for gender and follow-up duration. When interaction terms for moderating effects had a p < 0.05, stratified tracking analyses are reported