Table 2.

Sources of Referral and Health Insurance Requirement of Referral ¹

		ASD/XM		ASD/TAC		Comparison
		Physician	Non-physician	Physician	Non-physician	Physician	Non-physician
Insurance Referral	Yes	20	40	20	10	58	12
	No	13	35	27	17	31	7
Chi Square Probability		p = 0.48		p = 0.64		p = 0.87

1. The requirement of a document provided by primary care physicians to specialist office visits among subjects referred for initial visit by physicians or non-physicians within each group.