Table 2.

Adjusted ORs for associations between serum 25(OH)D and the risk of AAC.

Serum 25(OH)D	Model 1	Model 2	Model 3
	OR (95% CI)	OR (95% CI)	OR (95% CI)
Q1	Ref.	Ref.	Ref.
Q2	0.999 (0.787, 1.268)	0.970 (0.838, 1.336)	0.920 (0.703, 1.206)
Q3	0.858 (0.673, 1.092)	0.899 (0.701, 1.152)	0.806 (0.620, 1.047)
Q4	1.049 (0.826, 1.332)	1.073 (0.836, 1.376)	1.010 (0.783, 1.302)
P for trend	0.359	0.424	0.294

25(OH)D, 25-hydroxyvitamin D; AAC, abdominal aortic calcification; Q1, 9.37–50.5 nmol/L; Q2, 50.6–67.2 nmol/L; Q3, 67.3–85.8 nmol/L; Q4, 85.9–318.0 nmol/L; OR, odd ratio; CI, confidence interval; model 1 was adjusted for age and gender. Model 2 was further adjusted for race, education level, marital status, family poverty income ratio, the history of hypertension and diabetes mellitus, smoker, drinker, and physical activity. Model 3 was further adjusted for the complication of osteoporosis, and arthritis, systolic blood pressure, diastolic blood pressure, body mass index, hemoglobin, fast glucose, fast insulin, glycohemoglobin, aspartate aminotransferase, alanine aminotransferase, serum creatinine, uric acid, estimated glomerular filtration rate, phosphorus, calcium, total cholesterol, triglyceride, and high density lipoprotein-cholesterol.