Table 2.

Mean adult PROMIS scores by insurance classification

Insurance classification
PROMIS measure	Private (n = 27,282)		Medicare (n = 12,240)	Medicaid/Medicaid replacement (n = 687)	p value
	PPO / POS (n = 24,700)	HMO (n = 2582)
Anxiety	52 ± 10		55 ± 11	59 ± 11	< 0.001
	51 ± 10	53 ± 10
Depression	46 ± 10		49 ± 11	54 ± 12	< 0.001
	46 ± 9	47 ± 11
Pain Interference	61 ± 8		63 ± 8	66 ± 8	< 0.001
	61 ± 8	62 ± 8
Physical Function	42 ± 9		37 ± 9	36 ± 10	< 0.001
	42 ± 9	41 ± 9

Data presented as mean ± SD; minimum clinically important differences are approximately 2 to 3 points for PROMIS Anxiety and Depression and approximately 4 points for PROMIS Pain Interference and Physical Function [17, 32, 35, 54, 64]; p values represent comparison between private, Medicare, and Medicaid/Medicaid replacement classifications; PROMIS = Patient-reported Outcomes Measurement Information System; PPO = preferred provider organization; POS = point of service; HMO = health maintenance organization.