Table 3. Mean Adjusted Physician MIPS Scores by Patient Panel Social Risk and Score Domain^a.

Domain	MIPS score by patient social risk category, mean (SD)b			Difference in means (95% CI)c
	High	Medium	Low	High vs lowd	High vs mediumd	Medium vs lowd
Advancing care information	63.4 (42.7) [n = 45 298]	75.3 (36.4) [n = 139 028]	73.6 (39.9) [n = 53 371]	−10.2 (−10.7 to −9.7)	−11.9 (−12.3 to −11.5)	1.7 (1.3 to 2.1)
Improvement activities	29.4 (17.3) [n = 57 035]	33.0 (14.5) [n = 170 457]	33.3 (15.1) [n = 57 062]	−3.9 (−4.1 to −3.7)	−3.6 (−3.8 to −3.5)	−0.3 (−0.4 to −0.1)
Quality	64.0 (39.4) [n = 56 868]	74.7 (33.6) [n = 168 414]	75.4 (35.0) [n = 56 237]	−11.4 (−11.8 to −10.9)	−10.6 (−11.0 to −10.3)	−0.7 (−1.1 to −0.4)

Abbreviation: MIPS, Merit-based Incentive Payment System.

^aMIPS scores may range from 0 to 100, with a higher score indicating better performance across 3 domains: advancing care information, improvement activities, and quality. The scores reflect a weighted average of performance across those domains, along with additional bonuses and adjustments. Examples of measures in these categories include conducting or reviewing a security risk analysis and e-prescribing (advancing care information), advance care planning (improvement activities), and tobacco use screening and cessation (quality domain). Social risk was defined as the proportion of Medicare patients dually eligible for Medicare and Medicaid in a physician’s panel. All results adjusted for mean patient panel clinical risk (Hierarchical Condition Category) score.

^bPhysicians in the “high” category of patient panel social risk have a proportion of dually eligible patients in the top quintile among MIPS-participating physicians; those in the “medium” category are in the middle 3 quintiles; those in the “low” category are in the bottom quintile.

^cComparisons reflect mean-comparison (t) test between indicated subgroups.

^dP < .001 for all.