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Table 5 Construct Validity (linear regression analysis) for all participants of the APCAPS-PAQ (n = 2,321)

From: Development and evaluation of the Andhra Pradesh Children and Parent Study Physical Activity Questionnaire (APCAPS-PAQ): a cross-sectional study

  BMI (kg/m2) (n = 2,319) Body fat % (n = 2,286)
  Model 1 β (95 % CI) Model 2 β (95 % CI) Model 1 β (95 % CI) Model 2 β (95 % CI)
Total activitya     
 Total MET 1 Ref Ref Ref Ref
 Total MET 2 0.04 (-0.35, 0.42) 0.32 (-0.15, 0.79) −0.26 (-0.79, 0.35) −0.36 (-1.02, 0.29)
 Total MET 3 −0.33 (-0.70, 0.04) 0.27 (-0.38, 0.92) −1.45** (-1.97, -0.92) −0.89* (-1.79, 0.01)
Physical activity intensityb    
 Sedentary activity 1 Ref Ref Ref Ref
 Sedentary activity 2 −0.17 (-0.52, 0.19) −0.08 (-0.49, 0.33) 0.35 (-0.16, 0.86) 0.28 (-0.27, 0.84)
 Sedentary activity 3 0.30 (-0.70, 0.67) 0.81* (0.22, 1.40) 0.78* (0.25, 1.30) 1.52** (0.68, 2.35)
 Light activity 1 Ref Ref Ref Ref
 Light activity 2 0.15 (-0.23, 0.52) 0.51* (0.08, 0.89) 0.53* (-0.04, 0.98) 1.09** (0.46, 1.59)
 Light activity 3 0.33 (-0.04, 0.70) 0.97** (0.33, 1.38) 0.97** (0.02, 1.04) 1.86** (1.09, 2.61)
 MVPA activity 1 Ref Ref Ref Ref
 MVPA activity 2 −0.32 (-0.74, 0.10) −0.39 (-0.83, 0.11) −0.18 (-0.76, 0.39) −0.04 (-0.64, 0.57)
 MVPA activity 3 −0.61** (-1.02, -0.20) −0.17 (-0.68, 0.34) −1.58** (-2.17, -0.99) −0.80* (-1.54, -0.05)
  1. Model 1: Adjusting for age and sex and clustering (sibling-pairs). Model 2: Adjusting for age, sex and other physical activity participation (sedentary, light, MVPA) and clustering (sib-pair)
  2. Sedentary activity = time spent in activities <1.5 MET; light activity = time spent in activities 1.5-3 METS; MVPA = time spent in activities >3 MET
  3. aCategories reflect increasing total activity (MET hr/day), with category 1 as baseline (least activity)
  4. bCategories reflect increasing time spent in specific activity intensity with category 1 as baseline (least time). p -values are from linear regression analyses * p < 0.05; ** p < 0.001