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Table 2 Yearly coefficients (standard error) in quantile regressions using WC, WHtR or WHpR as outcomes

From: Changes in distributions of waist circumference, waist-to-hip ratio and waist-to-height ratio over an 18-year period among Chinese adults: a longitudinal study using quantile regression

  10th 25th 50th 75th 90th
Male
WC
  Model 1 1.400a (0.057) 1.279a (0.070) 1.337a (0.035) 1.440a (0.041) 1.507a (0.089)
  Model 2 1.107a (0.032) 1.110a (0.034) 1.133a (0.032) 1.184a (0.033) 1.176a (0.032)
  Model 3 1.102a (0.042) 1.114a (0.038) 1.152a (0.039) 1.160a (0.045) 1.204a (0.039)
 WHtR
  Model 1 0.798a (0.021) 0.750a (0.024) 0.795a (0.023) 0.800a (0.024) 0.750a (0.034)
  Model 2 0.535a (0.023) 0.543a (0.023) 0.552a (0.022) 0.558a (0.022) 0.572a (0.023)
  Model 3 0.546a (0.022) 0.551a (0.021) 0.560a (0.020) 0.567a (0.020) 0.579a (0.021)
 WHpR
  Model 1 0.714a (0.037) 0.671a (0.022) 0.650a (0.028) 0.664a (0.022) 0.632a (0.041)
  Model 2 0.461a (0.027) 0.476a (0.029) 0.487a (0.028) 0.495a (0.029) 0.512a (0.028)
  Model 3 0.471a (0.026) 0.475a (0.023) 0.491a (0.023) 0.511a (0.022) 0.531a (0.024)
Female
 WC
  Model 1 1.227a (0.068) 1.001a (0.029) 1.272a (0.029) 1.332a (0.058) 1.337a (0.063)
  Model 2 0.751a (0.044) 0.763a (0.042) 0.782a (0.043) 0.791a (0.046) 0.808a (0.047)
  Model 3 0.753a (0.032) 0.786a (0.032) 0.788a (0.032) 0.801a (0.031) 0.818a (0.035)
 WHtR
  Model 1 0.749a (0.029) 0.747a (0.026) 0.752a (0.026) 0.769a (0.029) 0.802a (0.030)
  Model 2 0.361a (0.025) 0.368 (0.024) 0.374a (0.024) 0.379a (0.024) 0.390a (0.024)
  Model 3 0.356a (0.025) 0.365a (0.025) 0.362a (0.026) 0.377a (0.026) 0.390a (0.026)
 WHpR
  Model 1 0.750a (0.032) 0.701a (0.022) 0.700a (0.027) 0.707a (0.034) 0.696a (0.048)
  Model 2 0.437a (0.026) 0.442a (0.026) 0.456a (0.026) 0.463a (0.025) 0.477a (0.026)
  Model 3 0.407a (0.023) 0.421a (0.025) 0.434a (0.023) 0.444a (0.022) 0.450a (0.025)
  1. Model 1 includes year only; Model 2 includes year, age, education, energy intake, physical activity, income, smoking and drinking history; Model 3 includes all the components of Model 2 and the urbanicity index
  2. aP < 0.001
  3. Abbreviation: WC, waist circumference; WHtR, waist-to-height ratio; WHpR, waist-to-hip ratio