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Effects of Prescription Drug Insurance on Hospitalization and Mortality: Evidence from Medicare Part D
Author(s) -
Kaestner Robert,
Schiman Cuping,
Alexander G. Caleb
Publication year - 2019
Publication title -
journal of risk and insurance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.055
H-Index - 63
eISSN - 1539-6975
pISSN - 0022-4367
DOI - 10.1111/jori.12229
Subject(s) - prescription drug , medical prescription , medicare part d , payment , actuarial science , medicine , emergency medicine , drug , business , medical emergency , family medicine , finance , pharmacology
We used Medicare administrative data (2002–2009) and an instrumental variables design that exploits the natural experiment created by the implementation of Medicare Part D to estimate the effect of prescription drug coverage insurance on the use and costs of inpatient services. We find that gaining prescription drug insurance through Part D caused approximately a 4 percent decrease in hospital admission rate, a 2–5 percent decrease in Medicare inpatient payments per person, and a 10–15 percent decrease in inpatient charges. Among specific types of admissions, gaining insurance was associated with significant decreases in admissions for CHF and COPD.