4.6 Article

Effects of Home-Based Primary Care on Hospital Use for High-Need Medicare Patients: an Observational Study

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SPRINGER
DOI: 10.1007/s11606-023-08328-8

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home-based primary care; house calls; high-need patients; geriatrics; hospitalizations

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This study found that home-based primary care (HBPC) for high-need, high-cost patients did not result in fewer total hospitalizations or lower inpatient spending. However, it may have led to lower rates of potentially avoidable hospitalizations after 2 years.
BackgroundHigh-need, high-cost Medicare patients can have difficulties accessing office-based primary care. Home-based primary care (HBPC) can reduce access barriers and allow a clinician to obtain valuable information not obtained during office visit, possibly leading to reductions in hospital use.ObjectiveTo determine whether HBPC for high-need, high-cost patients reduces hospitalizations and Medicare inpatient expenditures.DesignWe conducted a matched retrospective cohort study using a difference-in-differences analysis to examine patients 2 years before and 2 years after their first home visit (HBPC group).ParticipantsThe study included high-need, high-cost fee-for-service Medicare patients without prior HBPC use, of which 55,303 were new HBPC recipients and 156,142 were matched comparison patients.InterventionReceipt of at least two HBPC visits and, within 6 months of the index HBPC visit, a majority of a patient's primary care visits in the home.Main MeasuresTotal and potentially avoidable hospitalizations and Medicare inpatient expenditures.Key ResultsHBPC reduced total hospitalization rates, but the marginal effects were not statistically significant: a reduction of 11 total hospitalizations per 1000 patients in the first year (- 0.6%, p = 0.19) and 14 in the second year (- 0.7%, p = 0.16). However, HBPC reduced potentially avoidable hospitalization rates in the second year. The estimated marginal effect was a reduction of 6 potentially avoidable hospitalizations per 1000 patients in the first year (- 1.6%, p = 0.16) and 11 in the second (- 3.1%, p = 0.01). The estimated effect of HBPC was a small decrease in inpatient expenditures of $24 per patient per month (- 1.1%, p = 0.10) in the first year and $0 (0.0%, p = 0.99) in the second.ConclusionsAfter high-need, high-cost patients started receiving HBPC, they did not experience fewer total hospitalizations or lower inpatient spending but may have had lower rates of potentially avoidable hospitalizations after 2 years.

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