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Table 2 Descriptive characteristics of the study population

From: Reliability and Validity of the Dutch Physical Activity Questionnaires for Children (PAQ-C) and Adolescents (PAQ-A)

  Inter-item and inter-rater reliability (children) Inter-item and inter-rater reliability (parents) Concurrent validity Inter-item reliability (independent cohort)
  PAQ-C (n = 192) PAQ-A (n = 94) PAQ-C (n = 192) PAQ-A (n = 94) PAQ-A (n = 44) PAQ-C (n = 26) PAQ-A (n = 21)
Age, years 8.9 ± 1.7*** 13.6 ± 1.4    14.2 ± 1.8 9.1 ± 2.0*** 13.2 ± 2.1
Gender        
Boys, n (%) 91 (47.4) 42 (44.7) - - 26 (59.0) 12 (46.2) 14 (66.7)
Girls, n (%) 101 (52.6) 52 (55.3) - - 18 (41.0) 14 (53.8) 7 (33.3)
Height, cm 138.1 ± 11.3*** 165.0 ± 9.3 - - 164.3 ± 10.5 138.2 ± 13.4*** 159.2 ± 15.1
Weight, kg 32.1 ± 8.5*** 54.6 ± 14.7 - - 77.2 ± 26.4 38.2 ± 17.3*** 63.6 ± 26.5
BMI, kg/m2 16.5 ± 2.7*** 19.9 ± 4.1 - - 28.2 ± 8.1 19.1 ± 5.9** 24.9 ± 8.5
Q1 1.50 ± 0.25*** 1.35 ± 0.22 1.41 ± 0.21 1.30 ± 0.17 1.26 ± 0.19 1.38 ± 0.16* 1.27 ± 0.12
Q2 4.53 ± 0.72 4.59 ± 0.78 4.43 ± 0.76 4.50 ± 0.84 4.32 ± 1.13 4.58 ± 0.64 4.14 ± 1.11
Q3 3.94 ± 1.01 NA 3.90 ± 0.94 NA NA 3.89 ± 0.91 NA
Q4 3.60 ± 1.21*** 2.24 ± 1.01 3.53 ± 1.13 2.21 ± 0.97 2.34 ± 0.98 3.85 ± 1.29*** 2.38 ± 1.16
Q5 2.49 ± 1.22 2.28 ± 1.39 2.42 ± 1.19 2.24 ± 1.33 1.95 ± 1.36 2.23 ± 1.27 2.19 ± 1.47
Q6 2.55 ± 1.09 2.38 ± 1.09 2.49 ± 1.05 2.38 ± 1.09 2.25 ± 1.22 2.39 ± 1.06 2.29 ± 1.06
Q7 2.79 ± 0.89** 2.46 ± 1.02 2.71 ± 0.87 2.50 ± 0.95 2.09 ± 1.20 2.50 ± 1.14 2.24 ± 1.04
Q8 2.95 ± 0.97 2.93 ± 0.96 2.87 ± 0.86 2.80 ± 0.95 2.55 ± 1.32 2.69 ± 0.97 2.76 ± 1.04
Q9 3.12 ± 0.91*** 2.71 ± 0.81 3.01 ± 0.88 2.65 ± 0.79 2.24 ± 0.85 2.93 ± 0.82 2.46 ± 0.73
Total mean PAQ 3.05 ± 0.89*** 2.62 ± 0.92 2.97 ± 0.89 2.57 ± 0.90 2.36 ± 0.74 2.94 ± 0.57** 2.47 ± 0.69
  1. NA: not applicable. All values are presented as mean ± SD, unless otherwise indicated. Significant differences were detected between PAQ-C and PAQ-A filled in by children and adolescents using the independent samples t test: *P < 0.05, **P ≤ 0.01 and ***P ≤ 0.001.