Table 2.

Reliability and validity studies of general health assessment and health care access estimates

First author (year)	Focus of research	Research findings (confidence intervals)
Mucci (2006)	Reliability of self-reported health insurance coverage	Self-reports of enrollment agreement .93
		Type of plan self-report reliability .79
Clements (2006)	Reliability of self-reported HMO health care plan	Comparison of self-reports to external data
		k =.87
		Test/retest agreement 78%
Fahimi (2008)	Validity of prevalence of health insurance coverage	No health insurance
		BRFSS (18.4-19.1)*
		NHIS (18.7-20.0)*
		No medical care due to cost
		BRFSS (14.8-15.4)*
		NHIS (7.4-8.2)*
Salomon (2009)	Comparison of trends of general health in BRFSS and other national surveys; Comparison of prevalence of BRFSS and other national surveys	Prevalence of “fair” or “poor” health/ males:
		NHIS (11.3-12.7)*
		BRFSS (15.9-16.8)*
		Prevalence of “fair” or “poor” health/ females:
		NHIS (12.9-14.1)*
		BRFSS (16.6-17.2)*
		BRFSS more likely to show increased proportions of self-reports of “fair” or “poor” health