Table 4.

Threshold effect analysis of TG/HDL on incident diabetes.

Outcome	Diabetes
	HR (95% CI)	P value
One-line linear Cox regression model	1.16 (1.13, 1.20)	<0.001
Two-piecewise linear Cox regression model
TG/HDL < 1.33	2.07 (1.80, 2.39)	<0.001
TG/HDL ≥ 1.33	1.08 (1.04, 1.12)	<0.001
The effect of 2 and 1 is different	0.52 (0.45, 0.61)	<0.001
Likelihood ratio test	<0.001

Notes: adjusted for age, gender, BMI, smoking, drinking, family history of diabetes, ALT, AST, BUN, LDL, FPG, and TC.