Table 3.

Adjusted odds ratios from multivariable logistic regression models, predicting bonus payment adjustment in 2017 and 2019.

	Adjusted OR 2017 (95% CI)	Adjusted OR 2019 (95% CI)
Practice Organization
Large	REF	REF
Small	0.04 (0.03 0.05)	0.37 (0.30 0.47)
Medium	0.11 (0.08 0.16)	0.97 (0.79 1.21)
MSG	0.50 (0.36 0.69)	2.13 (1.73 2.63)
Average Beneficiary Age	0.86 (0.82 0.90)	0.91 (0.87 0.95)
Rurality of Practice
Urban	REF	REF
Rural	0.93 (0.71 1.21)	1.16 (0.87 1.53)
Total Number of Beneficiaries	0.99 (0.99 1.00)	1.00 (1.00 1.00)
Annual standardized payment *	1.25 (1.05 1.48)	0.63 (0.55 0.74)
Percent Race Minority	1.00 (0.99 1.01)	0.99 (0.99 1.00)
Avg Patient HCC Score	0.93 (0.67 1.26)	1.09 (0.80 1.49)
Percent Dual Eligible †	0.98 (0.97 0.99)	0.99 (0.98 0.99)
Region of Practice
Northeast	REF	REF
West	1.19(0.95 1.50)	0.73 (0.58 0.92)
South	0.99 (0.81 1.22)	0.75 (0.61 0.92)
Midwest	1.73 (1.34 2.22)	1.31 (1.01 1.70)
Years in practice	0.98 (0.97 0.99)	0.98 (0.97 0.99)

^*Total Medicare standardized payment is log transformed

^†Odds ratio represents change in odds per 1% change in proportion of dual eligible within a patient panel.

Note: The odds ratios for each performance year represent individual models, and therefore direct odds ratio comparisons can only be made within performance years and not between performance years.

Abbreviations: OR: Odds ratio; MSG: Multispecialty group; RUCA: Rural-Urban Commuting Area; HCC: Hierarchical condition category