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Table 4 Change in sedentary behavior for participants providing data at all 4 time points versus participants with 1 or 2 missing data points (mean, SD)

From: Development of sedentary behavior across childhood and adolescence: longitudinal analysis of the Gateshead Millennium Study

Variable 7–9y (Mean, SD) 7–12y 7–15y 9–12y 9–15y 12–15y
All (n 199) Missing (n 203) All (n 199) Missing (n 127) All (n 199) Missing (n 41) All (n 199) Missing (n 154) All (n 199) Missing (n 64) All (n 199) Missing (n 63)
Sedentary time (min) 33.1
(64.4)
28.9
(71.0)
126.1
(85.6)
111.4
(93.8)
191.9
(95.5)
166.8
(81.6)
93.0
(76.9)
93.3
(87.6)
158.8
(85.1)
153.4
(77.6)
65.8
(90.7)
59.5
(90.3)
Sedentary time (%/d) 4.6
(6.3)
3.9
(6.9)
13.6
(8.2)
13.5
(9.1)
22.3
(7.9)
21.4
(6.1)
9.0
(7.7)
9.8
(8.3)
17.7
(7.4)
18.5
(5.2)
8.7
(7.4)
8.7
(7.2)
Bouts per hour of sedentary time −0.22
(1.6)
0.06
(1.9)
−1.6
(2.4)
−1.4
(2.8)
−4.0
(2.4)
−4.4
(2.6)
−1.3
(2.2)
−1.5
(2.2)
−3.8
(2.3)
−4.0
(2.5)
−2.4
(2.3)
−2.7
(3.0)
  1. p > 0.05 for all