Table 4. Adjusted linear regression analysis for HOMA parameters with serum zinc as continuous value in normal participants (N = 142).

Exposure indicators	HOMA2 Parameters
	Beta Cell function			Insulin Sensitivity			Insulin Resistance
	Coefficient	95% CI†	P value	Coefficient	95% CI†	P value	Coefficient	95% CI†	P value
Serum Zinc	−0.77	−0.15 to −0.00	0.05	0.040	−.02 to 0.10	0.19	−0.0008	−0.001 to −0.0001	0.02
Age	−0.90	−2.14 to 0.33	0.15	1.00	0.007 to 1.99	0.048	−0.006	−0.17 to 0.005	0.29
Gender	−6.54	−36.15 to 23.07	0.66	−15.38	−39.17 to 8.40	0.20	−0.067	−0.34 to 0.20	0.62
Education	−1.31	−4.12 to 1.50	0.36	−2.82	−5.07 to −0.56	0.015	0.002	−0.02 to 0.02	0.84
Smoking History	−1.36	−20.47 to 17.75	0.89	3.53	−11.82 to 18.88	0.65	−0.06	−0.23 to 0.11	0.49
BMI	7.17	4.29 to 10.05	<0.001	−6.13	−8.44 to −3.81	<0.001	0.08	0.05 to 0.11	<0.001
Constant	91.83	−40.97 to 224.64	0.17	229.13	122.45 to 335.82	<0.001	0.20	−1.02 to 1.44	0.74

^†CI: Confidence Interval.