Dataset Information

Impact of Cost-Sharing Increases on Continuity of Specialty Drug Use: A Quasi-Experimental Study.

ABSTRACT:

Objective

To examine the impact of cost-sharing increases on continuity of specialty drug use in Medicare beneficiaries with multiple sclerosis (MS) or rheumatoid arthritis (RA).

Data sources/study setting

Five percent Medicare claims data (2007-2010).

Study design

Quasi-experimental study examining changes in specialty drug use among a group of Medicare Part D beneficiaries without low-income subsidies (non-LIS) as they transitioned from a 5 percent cost-sharing preperiod to a ?25 percent cost-sharing postperiod, as compared to changes among a disease-matched contemporaneous control group of patients eligible for full low-income subsidies (LIS), who faced minor cost sharing (?$6.30 copayment) in both the pre- and postperiods.

Data collection/extraction methods

Key variables were extracted from Medicare data.

Principal findings

Relative to the LIS group, the non-LIS group had a greater increase in incidence of 30-day continuous gaps in any Part D treatment from the lower cost-sharing period to the higher cost-sharing period (MS, absolute increase = 10.1 percent, OR = 1.61, 95% CI 1.19-2.17; RA, absolute increase = 21.9 percent, OR = 2.75, 95% CI 2.15-3.51). The increase in Part D treatment gaps was not offset by increased Part B specialty drug use.

Conclusions

Cost-sharing increases due to specialty tier-level cost sharing were associated with interruptions in MS and RA specialty drug treatments.

SUBMITTER: Li P

PROVIDER: S-EPMC6056595 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Impact of Cost-Sharing Increases on Continuity of Specialty Drug Use: A Quasi-Experimental Study.

Li Pengxiang P Hu Tianyan T Yu Xinyan X Chahin Salim S Dahodwala Nabila N Blum Marissa M Pettit Amy R AR Doshi Jalpa A JA

Health services research 20170724

<h4>Objective</h4>To examine the impact of cost-sharing increases on continuity of specialty drug use in Medicare beneficiaries with multiple sclerosis (MS) or rheumatoid arthritis (RA).<h4>Data sources/study setting</h4>Five percent Medicare claims data (2007-2010).<h4>Study design</h4>Quasi-experimental study examining changes in specialty drug use among a group of Medicare Part D beneficiaries without low-income subsidies (non-LIS) as they transitioned from a 5 percent cost-sharing preperiod ...[more]

PMID: 28736929

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Dataset Information

Impact of Cost-Sharing Increases on Continuity of Specialty Drug Use: A Quasi-Experimental Study.

Objective

Data sources/study setting

Study design

Data collection/extraction methods

Principal findings

Conclusions

Publications

Impact of Cost-Sharing Increases on Continuity of Specialty Drug Use: A Quasi-Experimental Study.

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