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Table 4 Unadjusted and adjusted cross-sectional associations between Local-IM, Area-IM and physical activity for boys and girls

From: Independent mobility in relation to weekday and weekend physical activity in children aged 10–11 years: The PEACH Project

  Weekday physical activity (counts per minute)   Weekend physical activity (counts per minute)  
Boys Beta
(95% CI)
z p % Variance explained
(within, between, overall)
Beta
(95% CI)
z p % Variance explained
(within, between, overall)
Local-IM 33.55a (19.23,47.87) 4.59 < 0.001 (0.032,0.144,0.041) 24.47a
(-2.319,51.25)
1.79 0.073 (0.007,0.009,0.010)
  35.92b
(21.59,50.24)
4.35 0.001 (0.029,0.071,0.038) 25.77b
(-1.63,53.17)
1.84 0.065 (0.030,0.216,0.045)
Area-IM 30.48a
(16.73,44.23)
4.35 0.001 (0.029,0.071,0.038) 21.92a
(-4.26,48.17)
1.64 0.101 (0.006,0.001,0.008)
  32.61c
(18.80,46.42)
4.63 < 0.001 (0.061,0.500,0.152) 25.42c
(-1.31,52.15)
1.86 0.062 (0.031,0.199,0.045)
Local-IM* Area-IM 6.51d
(-21.66,15.01)
0.60 0.547   8.40d
(-32.07,48.88)
0.41 0.684  
Girls Beta
(95% CI)
Z p % Variance explained
(within, between, overall)
Beta
(95% CI)
z p % Variance explained
(within, between, overall)
Local-IM 17.89a
(6.20, 29.58)
3.00 0.003 (0.015,0.001,0.013) 24.13a
(4.49,43.78)
2.41 0.016 (0.005,0.226,0.011)
  16.88b
(4.98,28.79)
2.78 0.005 (0.021,0.239,0.053) 23.45b
(3.42,43.47)
2.29 0.022 (0.021,0.055,0.035)
Area-IM 21.03a
(8.43,33.64)
3.27 0.001 (0.016,0.095,0.024) 20.86a
(-0.589,42.31)
1.91 0.057 (0.002,0.179, 0.007)
  21.26c
(8.52,33.99)
3.27 0.001 (0.024,0.281,0.063) 18.93c
(-2.80,40.65)
1.71 0.088 (0.030,0.216,0.045)
Local-IM* Area-IM 3.31d
(-21.66,15.04)
-0.35 0.724   3.25d
(-28.87,35.37)
0.20 0.843  
  1. a Unadjusted model
  2. b Adjusted for BMI, IMD score, daylight, pubertal status
  3. c Adjusted for Local-IM, BMI, IMD score, daylight, pubertal status
  4. d Adjusted for Local-IM, Area-IM, BMI, IMD score, daylight, pubertal status