Table 5
Multivariate analysis of factors associated with performance of vitamin B12 or folate measurement in patients with macrocytic anemia

Variable	Vitamin B12 or folate
	OR (95% CI)*	Adj-OR (95% CI)†
	Age (yr)
≤85 (reference)	1.000	1.000
>85	1.494 (0.430–5.191)	1.355 (0.348–5.277)
Hemoglobin
Hemoglobin≤8.6	5.714 (1.414–23.097)	5.773 (1.102–30.230)
Hemoglobin>8.6 (reference)	1.000	1.000

OR, odd ratio; CI, confidence interval; Adj-OR, adjusted odd ratio.
^*Estimated from the logistic regression model with each covariates (unit model).
^†Estimated from the logistic regression model with all covariates (full model).