Table 4 Association between vigorous 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

0.21 (−0.04 to 0.48)

0.33 (−0.003 to 0.56)

0.23 (−0.25 to 0.42)

0.23 (−0.05 to 0.48)

2th

0.13 (−0.04 to 0.28)

0.30 (0.02 to 0.56)

0.21 (−0.14 to 0.53)

0.21 (−0.03 to 0.44)

normal

3th

0.05 (−0.18 to 0.30)

0.34 (0.05 to 0.53)

0.19 (−0.04 to 0.55)

0.34 (0.004 to 0.49)

10th

0.12 (−0.07 to 0.26)

0.18 (0.01 to 0.38)

0.22 (−0.04 to 0.44)

0.27 (0.05 to 0.43)

20th

−0.02 (−0.16 to 0.11)

0.12 (−0.04 to 0.27)

0.08 (−0.05 to 0.26)

0.17 (−0.02 to 0.33)

30th

−0.18 (−0.31 to −0.02)

−0.002 (−0.15 to 0.12)

−0.02 (−0.23 to 0.13)

−0.03 (−0.18 to 0.14)

40th

−0.35 (−0.53 to −0.20)

−0.18 (−0.33 to −0.02)

−0.14 (−0.31 to 0.02)

−0.15 (−0.31 to −0.02)

overweight

51th

−0.35 (−0.54 to −0.19)

−0.20 (−0.35 to −0.04)

−0.17 (−0.36 to 0.01)

−0.12 (−0.33 to 0.02)

60th

−0.50 (−0.67 to −0.36)

−0.25 (−0.41 to −0.08)

−0.29 (−0.44 to −0.11)

−0.27 (−0.45 to −0.10)

70th

−0.49 (−0.64 to −0.33)

−0.30 (−0.46 to −0.12)

−0.36 (−0.57 to −0.15)

−0.34 (−0.53 to −0.12)

80th

−0.52 (−0.67 to −0.29)

−0.27 (−0.47 to −0.10)

−0.27 (−0.47 to −0.007)

−0.23 (−0.46 to −0.06)

obesity

87th

−0.50 (−0.72 to −0.29)

−0.41 (−0.60 to −0.15)

−0.27 (−0.60 to 0.007)

−0.36 (−0.59 to −0.09)

90th

−0.66 (−0.87 to −0.39)

−0.54 (−0.74 to −0.26)

−0.45 (−0.76 to −0.16)

−0.52 (−0.83 to −0.26)

91th

−0.66 (−0.91 to −0.46)

−0.54 (−0.79 to −0.28)

−0.55 (−0.84 to −0.16)

−0.57 (−0.90 to −0.24)

93th

−0.81 (−1.10 to −0.45)

−0.70 (−0.92 to −0.37)

−0.63 (−0.94 to −0.31)

−0.62 (−0.96 to −0.26)

OLS

 

−0.35 (−0.50 to −0.20)

−0.15 (−0.31 to 0.008)

−0.16 (−0.34 to 0.02)

−0.14 (−0.32 to −0.04)

  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.