OBJECTIVE: To determine whether health insurance expansions via a Medicare buy-in might plausibly increase mammography screening rates among women aged 50-64. DATA SOURCES: Two waves of the Health and Retirement Study (HRS) (1994, 1996). STUDY DESIGN: A longitudinal study with most explanatory variables measured at the second wave of HRS (1994); receipt of mammography, number of physician visits, and breast self exam (BSE) were measured at the third wave (1996). DATA EXTRACTION: Our sample included women aged 50-62 in 1994 who answered the second and third HRS interview (n = 4,583). PRINCIPAL FINDINGS: From 1994 to 1996, 72.7 percent of women received a mammogram. Being insured increased mammography in both unadjusted and adjusted analyses. A simulation of universal insurance coverage in this age group increased mammography rates only to 75-79 percent from the observed 72.7 percent. When we accounted for potential endogeneity of physician visits and BSE to mammography, physician visits remained a strong predictor of mammography but BSE did not. CONCLUSION: Even in the presence of universal coverage and very optimistic scenarios regarding the effect of insurance on mammography for newly insured women, mammography rates would only increase a small amount and gaps in screening would remain. Thus, a Medicare buy-in could be expected to have a small impact on mammography screening rates.
OBJECTIVE: To determine whether health insurance expansions via a Medicare buy-in might plausibly increase mammography screening rates among women aged 50-64. DATA SOURCES: Two waves of the Health and Retirement Study (HRS) (1994, 1996). STUDY DESIGN: A longitudinal study with most explanatory variables measured at the second wave of HRS (1994); receipt of mammography, number of physician visits, and breast self exam (BSE) were measured at the third wave (1996). DATA EXTRACTION: Our sample included women aged 50-62 in 1994 who answered the second and third HRS interview (n = 4,583). PRINCIPAL FINDINGS: From 1994 to 1996, 72.7 percent of women received a mammogram. Being insured increased mammography in both unadjusted and adjusted analyses. A simulation of universal insurance coverage in this age group increased mammography rates only to 75-79 percent from the observed 72.7 percent. When we accounted for potential endogeneity of physician visits and BSE to mammography, physician visits remained a strong predictor of mammography but BSE did not. CONCLUSION: Even in the presence of universal coverage and very optimistic scenarios regarding the effect of insurance on mammography for newly insured women, mammography rates would only increase a small amount and gaps in screening would remain. Thus, a Medicare buy-in could be expected to have a small impact on mammography screening rates.
Authors: M M Roberts; F E Alexander; T J Anderson; U Chetty; P T Donnan; P Forrest; W Hepburn; A Huggins; A E Kirkpatrick; J Lamb Journal: Lancet Date: 1990-02-03 Impact factor: 79.321
Authors: L Nyström; L E Rutqvist; S Wall; A Lindgren; M Lindqvist; S Rydén; I Andersson; N Bjurstam; G Fagerberg; J Frisell Journal: Lancet Date: 1993-04-17 Impact factor: 79.321