Table 7. Adjusted linear regression analysis for HOMA parameters with serum zinc as category in prediabetic participants (N = 35).

Exposure parameters	HOMA2 Parameters
	Beta cell function			Insulin sensitivity			Insulin resistance
	Coeff.*	95% CI*	P value	Coeff.*	95% CI*	P value	Coeff.*	95% CI*	P value
Zinc categories (≥700 ppb/L)	−20.86	−59.33 to 17.6	0.27	16.84	−32.33 to 66.02	0.48	−0.55	−1.77 to 0.66	0.35
Age	−0.44	−1.72 to 0.83	0.48	0.39	−1.24 to 2.02	0.62	−0.01	−0.05 to 0.02	0.56
Gender	0.17	−29.94 to 30.29	0.99	−3.07	−41.57 to 35.43	0.87	0.002	−0.95 to 0.95	0.99
Education	−0.12	−2.62 to 2.37	0.92	0.12	−3.07 to 3.32	0.93	−0.003	−0.08 to 0.07	0.92
Smoking History	−7.70	−30.66 to 15.24	0.49	11.94	−17.39 to 41.39	0.41	−0.27	−1.00 to 0.44	0.43
BMI	3.62	0.72 to 6.52	0.01	−2.57	−6.28 to 1.13	0.16	0.10	0.016 to 0.20	0.02
Constant	20.20	−102.18 to 142.60		122.59	−33.86 to 279.06	0.12	−0.16	−4.03 to 3.71	0.93

^*Coeff: Coefficient,

^*CI: Confidence Interval.