Table 2.

Result of Multinomial Logistic Regression of Medicare Beneficiaries’ Characteristics on Primary Care Model, Year 2014.^a

	NP/PA Model			Shared Care Model
		95% CI			95% CI
Characteristics	Odds Ratio	Lower Limit	Upper Limit	Odds Ratio	Lower Limit	Upper Limit
Age group, years
71-75 vs 66-70	0.87	0.85	0.90	0.99	0.98	1.01
76-80 vs 66-70	0.78	0.76	0.80	0.97	0.96	0.99
81-85 vs 66-70	0.71	0.69	0.73	0.93	0.92	0.95
>85 vs 66-70	0.63	0.61	0.65	0.82	0.80	0.83
Sex
Male vs female	0.91	0.89	0.93	0.87	0.87	0.88
Race/ethnicity
Black vs white	0.75	0.71	0.78	0.60	0.59	0.62
Hispanic vs white	0.70	0.63	0.78	0.59	0.56	0.63
Other vs white	0.57	0.54	0.60	0.55	0.53	0.57
Medicaid eligibility
Yes vs no	1.35	1.31	1.40	0.88	0.86	0.89
Number of chronic conditions
1 vs 0	0.74	0.72	0.76	1.27	1.24	1.29
2 vs 0	0.62	0.60	0.64	1.34	1.32	1.37
3+ vs 0	0.57	0.55	0.58	1.67	1.65	1.70
Hospitalizations in prior year
1 vs 0	1.20	1.16	1.24	1.17	1.15	1.19
2 vs 0	1.19	1.12	1.28	1.27	1.23	1.31
3+ vs 0	1.24	1.12	1.37	1.37	1.31	1.44
Rural/urban
Urban vs metro	2.35	2.30	2.41	1.37	1.35	1.39
Rural vs metro	3.97	3.80	4.14	1.66	1.61	1.72
Primary care HPSA
Yes vs no	1.26	1.23	1.29	1.14	1.13	1.15
Region
Midwest vs Northeast	1.18	1.14	1.21	1.29	1.27	1.31
South vs Northeast	1.11	1.08	1.15	1.27	1.25	1.28
West vs Northeast	1.36	1.32	1.41	1.15	1.13	1.18

Abbreviations: CI, confidence interval; NP, nurse practitioner; PA, physician assistant.

^aReference: physician model.