Table 4.

The result of two-piecewise linear regression model stratified by sex

Incident DM (male)	HR (95% CI)	P
Fitting model by standard linear regression	1.475 (1.242, 1.753)	< 0.001
Fitting model by two-piecewise linear regression
Inflection point of BRI
≤ 3.146	0.903 (0.606, 1.346)	0.617
> 3.146	1.827 (1.449, 2.303)	< 0.001
P for log likelihood ratio test	0.011

Incident DM (female)	HR (95% CI)	P
Fitting model by standard linear regression	1.828 (1.386, 2.412)	< 0.001
Fitting model by two-piecewise linear regression
Inflection point of BRI
≤ 4.137	1.418 (0.983, 2.045)	0.062
> 4.137	4.189 (1.862, 9.421)	< 0.001
P for log likelihood ratio test	0.045

We adjusted age, gender, SBP, DBP, smoking status, ethanol consumption, habit of exercise, ALT, AST, GGT, FBG, HbA1c, HDL-c, TC, TG

ALT alanine aminotransferase; AST aspartate aminotransferase; CI confidence interval; DBP diastolic blood pressure; FBG fasting blood glucose; GGT glutamyl transpeptidase; HbA1c hemoglobin A1c; HDL-C high-density lipoprotein cholesterol; HR hazard ratio; Ref reference; SBP systolic blood pressure; TC total cholesterol; TG triglyceride