Table 2.

Accuracy of Medicare Enrollment Database Race/Ethnicity Relative to Self-Report

	White	Black	Hispanic	Asian	NHOPI	AIAN
Sensitivity
Narrow definition	99.16	97.91	40.57	59.61	38.55	56.99
Broad definition	97.31	93.81	30.19	56.74	26.33	17.60
Specificity	91.53	99.70	99.91	99.89		99.93
Predictive value positive	98.64	96.76	95.51	94.69		82.53
Predictive value negative	84.35	99.42	95.59	98.28		98.50
Reported single-race/ethnicity	93.26	91.01	24.00	91.77	43.51	23.78

Note. Weighted percentages for CAHPS respondents ≥65 years old. EDB category “Asian and Pacific Islander” combines Asian and NHOPI, which are therefore combined for some measures. For sensitivity, “narrow definition” is restricted to CAHPS respondents selecting only a single category and “broad definition” includes all respondents selecting the category singly or in combination.

AIAN, American Indian and Alaskan Native; NHOPI, Native Hawaiian and other Pacific Islander.