TY - JOUR
T1 - Selection experiences in Medicare HMOs
T2 - Pre-enrollment expenditures
AU - Call, Kathleen Thiede
AU - Dowd, Bryan
AU - Feldman, Roger
AU - Maciejewski, Matthew
PY - 1999/10/25
Y1 - 1999/10/25
N2 - Using 1993 and 1994 data, the authors examine whether beneficiaries who enroll in a Medicare health maintenance organization (HMO), including those enrolling for only a short period of time, have lower expenditures than continuous fee-for-service (FFS) beneficiaries the year prior to enrollment. We also test whether biased selection varies by the level of HMO market penetration and the rate of market-share growth. We find favorable selection associated with enrollment into Medicare HMOs, which declines as market share increases but does not disappear. Among short-term enrollees, we find unfavorable selection, however, selection bias was not sensitive to market characteristics.
AB - Using 1993 and 1994 data, the authors examine whether beneficiaries who enroll in a Medicare health maintenance organization (HMO), including those enrolling for only a short period of time, have lower expenditures than continuous fee-for-service (FFS) beneficiaries the year prior to enrollment. We also test whether biased selection varies by the level of HMO market penetration and the rate of market-share growth. We find favorable selection associated with enrollment into Medicare HMOs, which declines as market share increases but does not disappear. Among short-term enrollees, we find unfavorable selection, however, selection bias was not sensitive to market characteristics.
UR - http://www.scopus.com/inward/record.url?scp=0032869798&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0032869798&partnerID=8YFLogxK
M3 - Article
C2 - 11482122
AN - SCOPUS:0032869798
SN - 0195-8631
VL - 20
SP - 197
EP - 209
JO - Health Care Financing Review
JF - Health Care Financing Review
IS - 4
ER -
