Table 4 The result of the two-piecewise Cox proportional hazards regression model by gender.

From: Non-linear relationship between relative fat mass and diabetes risk in Japanese adults: a retrospective cohort study

Incident DM

All participants

(HR, 95%CI, P)

Female

(HR, 95%CI, P)

Male

(HR, 95%CI, P)

Fitting model by standard linear regression

1.08 (1.02, 1.14) 0.0055

1.13 (1.04, 1.24) 0.0061

1.05 (0.98, 1.13) 0.1511

Fitting model by two-piecewise Cox proportional hazards regression

   

The inflection point of RFM

22.06

39.23

23.08

≤ Inflection point

0.97 (0.90, 1.05) 0.4941

1.11 (1.01, 1.21) 0.0256

0.98 (0.91, 1.06) 0.5899

> Inflection point

1.12 (1.06, 1.19) 0.0002

1.39 (1.17, 1.65) 0.0002

1.16 (1.06, 1.28) 0.0012

P for log-likelihood ratio test

0.002

0.009

0.002

  1. Note 1: In all participants, we adjusted gender, age, BMI, alcoholic intake, smoking status, exercise habits, SBP, DBP, ALT, AST, GGT, HDL-C, TC, TG, HbA1c, and FPG.
  2. Note 2: For female and male subgroups, we adjusted for age, BMI, alcoholic intake, smoking status, exercise habits, SBP, DBP, ALT, AST, GGT, HDL-C, TC, TG, HbA1c, and FPG.
  3. HR: hazard ratios; CI: confidence; DM: diabetes mellitus; RFM: relative fat mass
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