Table 4
Multivariate analysis of factors associated with performance of endoscopic procedures in patients with iron deficiency anemia

Variable	Endoscopy
	OR (95% CI)*	Adj-OR (95% CI)†
	Age (yr)
≤85 (reference)	1.000	1.000
>85	1.633 (0.310–8.607)	1.639 (0.291–9.224)
Hemoglobin
Hemoglobin≤8.6	1.125 (0.236–5.371)	0.988 (0.193–5.064)
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).