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Table 6 The result of the two-piecewise Cox regression model

From: The association between creatinine to body weight ratio and the risk of progression to diabetes from pre-diabetes: a 5-year cohort study in Chinese adults

Incident diabetes

Model I(HR,95%CI, P)

Fitting model by standard Cox regression

0.445 (0.361, 0.548) < 0.0001

Fitting model by two-piecewise Cox regression

 Inflection point of the Cre/BW ratio

1.072

  ≤ Inflection point

0.294 (0.208, 0.414) < 0.0001

  > Inflection point

0.712 (0.492, 1.029) 0.0706

P for log-likelihood ratio test

0.003

  1. We adjusted age, gender, height, SBP, DBP, FPG, BUN, TG, HDL-c, LDL-c, ALT, AST, family history of diabetes, smoking and drinking status
  2. HR Hazard ratios, CI Confidence, Ref Reference, Cre/BW ratio Creatinine to body weight ratio