Table 3 Association between sufficient PA and BMI using QR and OLS models for different quantiles of BMI.

From: Different associations of sufficient and vigorous physical activity with BMI in Northwest China

  

Model1

Model2

Model 3

Model 4

underweight

1st

0.81 (0.33 to 1.25)

0.66 (0.51 to 1.45)

0.51 (0.21 to 1.36)

0.53 (0.09 to 1.27)

2th

0.72 (0.25 to 1.19)

0.85 (0.40 to 1.19)

0.68 (0.28 to 1.04)

0.54 (0.32 to 1.03)

normal

3th

0.49 (0.24 to 0.99)

0.70 (0.50 to 1.23)

0.62 (0.19 to 1.09)

0.69 (0.32 to 1.05)

10th

0.46 (0.24 to 0.73)

0.58 (0.23 to 0.90)

0.57 (0.25 to 1.01)

0.60 (0.32 to 1.04)

20th

0.35 (0.11 to 0.56)

0.49 (0.16 to 0.73)

0.47 (0.19 to 0.79)

0.55 (0.27 to 0.87)

30th

0.23 (0.02 to 0.45)

0.29 (0.05 to 0.50)

0.32 (0.07 to 0.63)

0.25 (−0.04 to 0.62)

40th

−0.008 (−0.26 to 0.20)

0.10 (−0.16 to 0.40)

0.21 (−0.12 to 0.49)

0.25 (0.002 to 0.50)

overweight

51th

0.04 (−0.13 to 0.20)

0.10 (−0.14 to 0.30)

0.19 (−0.008 to 0.47)

0.26 (0.01 to 0.45)

60th

0.01 (−0.13 to 0.26)

0.07 (−0.14 to 0.31)

0.23 (−0.04 to 0.49)

0.22 (−0.09 to 0.49)

70th

0.14 (−0.05 to 0.33)

0.18 (−0.14 to 0.31)

0.38 (0.09 to 0.70)

0.40 (0.13 to 0.60)

80th

0.17 (−0.24 to 0.37)

0.06 (−0.28 to 0.37)

0.41 (−0.08 to 0.69)

0.33 (−0.10 to 0.71)

obesity

87th

−0.07 (−0.52 to 0.23)

−0.19 (−0.61 to 0.22)

0.39 (−0.39 to 0.69)

0.28 (−0.25 to 0.56)

90th

−0.31 (−0.68 to 0.14)

−0.30 (−0.81 to 0.07)

0.11 (−0.55 to 0.54)

−0.09 (−0.64 to 0.53)

91th

−0.34 (−0.70 to −0.02)

−0.30 (−0.90 to 0.13)

0.05 (−0.67 to 0.41)

−0.15 (−0.65 to 0.37)

93th

−0.31 (−0.93 to 0.16)

−0.38 (−1.03 to −0.001)

−0.20 (−0.89 to 0.36)

−0.36 (−0.93 to 0.40)

ols

 

0.10 (−0.11to 0.32)

0.15 (−0.07 to 0.37)

0.32 (0.06 to 0.57)

0.32 (0.07 to 0.58)

  1. Abbreviations: PA, physical activity; BMI, body mass index; CI, confidence interval; OLS, ordinary least squares; QR, quantile regression.
  2. Values are β estimates (95% CI). Coefficients and CI significant at the 5% level are in bold.