Table 3.

ORs of referral using unadjusted and adjusted logistic regression analyses using National Ambulatory Medical Care Survey, 2012–2014

	Unadjusted OR (95% CI)	Adjusted OR (95% CI)
Not having a rare disease	Reference	Reference
Having a rare disease	1.69 (1.15 to 2.48)*	1.52 (1.01 to 2.28)*†

*Statistical significant level at 0.05.

†Controlled for age, gender, race/ethnicity, types of insurance, major reason for this visit, total number of chronic disease, having a rare disease and established versus new patient.