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Table 3 Test-retest reliability of factors and correlations with self-reported MVPA (mins.wk -1 )

From: Reliability and validity of the modified child and adolescent physical activity and nutrition survey (CAPANS-C) questionnaire examining potential correlates of physical activity participation among Chinese-Australian youth

  N Mediana(IQR) ICCb N Correlation
   Time 1 T1 Time 2 T2 (95%: CI)   (Rho, ρ)
Social – parental support
Overall 77 24.0 (21.0, 28.0) 24.0 (22.0, 29.0) 0.6 (0.40, 0.87) 104 0.24* Weighted
0.25* Unweighted
Boys 38 26.5 (23.0, 29.0) 25.5 (24.0, 30.0) 0.8 (0.55, 0.98) 45 0.18 Weighted
0.21 Unweighted
Girls 39 24.0 (20.0, 26.0) 24.0 (18.0, 26.0) 0.5 (0.08, 0.83) 52 0.16 Weighted
0.16 Unweighted
Psychological – perceived barriers
Overall 77 17.0 (15.0, 19.0) 16.0 (15.0, 19.0) 0.6 (035, 0.90) 99 0.24* Weighted
0.26** Unweighted
Boys 38 18.0 (16.0, 19.0) 18.0 (16.0, 19.0) 0.7 (0.38, 0.99) 46 0.31* Weighted
0.33** Unweighted
Girls 39 16.0 (14.0, 18.0) 16.0 (14.0, 18.0) 0.6 (0.22, 0.90) 54 0.16 Weighted
0.19 Unweighted
Psychological – preference/attitude
Overall 77 21.0 (18.0, 23.0) 20.0 (18.0, 23.0) 0.5 (0.25, 0.78) 98 0.27** Weighted
0.24* Unweighted
Boys 38 21.0 (19.0, 23.0) 20.5 (18.0, 24.0) 0.4 (0.05, 0.79) 46 0.25 Weighted
0.23 Unweighted
Girls 39 20.0 (18.0, 23.0) 20.0 (18.0, 22.0) 0.6 (0.25, 0.89) 52 0.26 Weighted
0.24 Unweighted
Psychological- perceived ailment
Overall 76 15.0 (13.0, 15.0) 15.0 (12.0, 15.0) 0.5 (0.14, 0. 94) 98 -0.11 Weighted
-0.11 Unweighted
Boys 37 15.0 (12.0, 15.0) 14.0 (12.0, 15.0) 0.4 (0.00, 0.87) 45 0.07 Weighted
0.09 Unweighted
Girls 39 15.0 (13.0, 15.0) 15.0 (12.0, 15.0) 0.6 (0.20, 1.04) 54 -0.18 Weighted
-0.20 Unweighted
Social- family education beliefs
Overall 76 4.0 (4.0, 6.0) 5.0 (4.0, 6.0) 0.3 (0.00, 0.62) 96 0.12 Weighted
0.12 Unweighted
Boys 38 4.5 (4.0, .0) 5.0 (4.0, 6.0) 0.4 (0.04, 0.81 45 0.00 Weighted
0.00 Unweighted
Girls 38 4.0 (4.0, 6.0) 5.0 (4.0, 6.0) 0.7 (0.45, 0.81) 51 0.26 Weighted
0.26 Unweighted
Social – parental modelling
Overall 76 6.5 (5.0, 8.5) 6.0 (4.5, 8.0) 0.7 (0.41, 0.95) 97 -0.26** Weighted
-0.26* Unweighted
Boys 38 6.0 (5.0, 8.0) 6.0 (5.0, 8.0) 0.7 (0.42, 0.99) 46 -0.47** Weighted
-0.45** Unweighted
Girls 38 7.0 (6.0, 9.0) 6.0 (4.0, 8.0) 0.7 (0.40, 0.97) 51 -0.08 Weighted
-0.08 Unweighted
Psychological – personal benefits
Overall 75 26.0 (24.0, 28.0) 26.0 (24.0, 29.0) 0.7 (0.42, 0.92) 97 0.16 Weighted
0.14 Unweighted
Boys 36 26.0 (24.0, 27.5) 26.0 (23.5, 28.5) 0.7 (0.39, 0.94) 44 0.01 Weighted
0.01 Unweighted
Girls 39 25.0 (24.0, 29.0) 26.0 (24.0, 30.0) 0.7 (0.39, 0.96 53 0.26 Weighted
0.24 Unweighted
Psychological- positive outcome expectations
Overall 77 16.0 (14.0, 19.0) 15.0 (14.0, 18.0) 0.4 (0.07, 0.66) 99 0.17 Weighted
0.17 Unweighted
Boys 38 15.0 (14.0, 18.0) 15.0 (14.0, 18.0) 0.3 (0.00, 0.72) 46 -0.01 Weighted
-0.03 Unweighted
Girls 39 16.0 (13.0, 19.0) 15.0 (14.0, 18.0) 0.4 (0.00, 0.72) 53 0.30* Weighted
0.30* Unweighted
Psychological- negative outcome expectations
Overall 73 6.0 (5.0, 7.0) 6.0 (5.0, 9.0)* 0.4 (0.07, 0.71) 99 -0.13 Weighted
-0.14 Unweighted
Boys 38 6.0 (5.0, 7.0) 6.0 (5.0, 9.0) 0.4 (0.00, 0.76) 46 -0.47*** Weighted
-0.47*** Unweighted
Girls 39 6.0 (4.0, 7.0) 6.0 (6.0, 9.0) 0.6 (0.21, 0.93) 53 0.07 Weighted
0.08 Unweighted
  1. a= median and IQR; b= Intra-class correlation and 95% confidence interval based on unweighted factor scores; ρ = Spearman rank-order correlation based on unweighted and weighted factor score; with significant correlations (in bold) indicated as follows, *P = <0.05, **= P<0.01, ***P = <0.001; and N = number of respondents for the question item.