Estimation of non-response bias in the Medicare FFS HOS.
We examined non-response bias in physical component summary scores (PCS) and mental component summary scores (MCS) in the Medicare fee-for-service (FFS) Health Outcomes Survey (HOS) using two alternative methods, response propensity weighting and imputation for non-respondents. The two approaches gave nearly identical estimates of non-response bias. PCS scores were 0.74 points lower and MCS scores 0.51 points lower after adjustment for non-response through imputation and 0.63 and 0.46 lower after adjustment for propensity weighting. These levels are small for component scores suggesting that survey non-response to the FFS HOS does not adversely affect estimates of average health status for this population.
McCall
Nancy
N
Research Triangle Institute (RTI) International, Washington, DC 20036, USA. NMcCall@rti.org
Khatutsky
Galina
G
Smith
Kevin
K
Pope
Gregory C
GC
D000368:Aged; D000369:Aged, 80 and over; D015982:Bias; D003625:Data Collection / Q000295:instrumentation*; D018588:Fee-for-Service Plans; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D006278:Medicare; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D014481:United States / Q000453:epidemiology