Table 3. Adjusted linear regression for serum zinc levels by participant's glycemic status ((N = 278, Normoglycemic = 142, Prediabetic = 35 and Diabetic = 101).

Exposure parameters	Serum Zinc
	Coefficient	95% Confidence Interval	P Value
Glycemic status:
Normoglycemic	Ref	Ref	Ref
Prediabetic	−66.69	−125.15 to −8.24	0.02
Diabetic	−25.60	−66.20 to 14.98	0.21
Age	−1.14	−2.96 to 0.67	0.21
Sex	−42.16	−86.37 to 2.04	0.06
Education	−2.44	−5.60 to 0.72	0.13
Smoking History	0.04	−31.26 to 31.34	0.99
BMI	2.24	−2.00 to 6.49	0.30
Constant	665.92	489.02 to 842.83	<0.001