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. Author manuscript; available in PMC: 2018 Apr 9.
Published in final edited form as: Int J Obes (Lond). 2017 Feb 27;41(6):964–970. doi: 10.1038/ijo.2017.53

Table 2.

Quantile regression results for 5th, 15th, 50th, 85th and 95th percentiles year coefficients in children in China, by sex

Year effects 5th 15th 50th 85th 95th

Coefficient SE Coefficient SE Coefficient SE Coefficient SE Coefficient SE
Boys
BMI (kg/cm2) in 1997 13.79 14.79 16.87 20.20 22.22
Model 1a 0.41*** 0.01 0.41*** 0.01 0.50*** 0.01 0.54*** 0.01 0.63*** 0.04
Model 2b 0.24 0.21 0.24 0.22 0.25 0.22 0.26 0.22 0.30 0.22
Model 3c 0.25 0.21 0.25 0.21 0.26 0.21 0.25 0.21 0.30 0.21
Girls
BMI (kg/cm2) in 1997 13.54 14.58 16.86 20.12 22.25
Model 1a 0.47*** 0.02 0.48*** 0.02 0.55*** 0.02 0.62*** 0.22 0.68*** 0.03
Model 2b −0.26 0.26 −0.25 0.26 −0.24 0.26 −0.23 0.25 −0.20 0.26
Model 3c −0.25 0.26 −0.25 0.26 −0.24 0.26 −0.23 0.26 −0.21 0.26
a

Model 1: controlled for time only

b

Model 2: controlled for time, individual, and household factors

c

Model 3: controlled for time, individual, and household characteristics, as well as the community urbanization index

***

P<0.001