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Does a Patient-Directed Financial Incentive Affect Patient Choices About Controller Medicines for Asthma? A Discrete Choice Experiment and Financial Impact Analysis.

Abstract：

BACKGROUND:In Australia, many patients who are initiated on asthma controller inhalers receive combination inhaled corticosteroid/long-acting beta2-agonist (ICS/LABA) despite having asthma of sufficiently low severity that ICS-alone would be equally effective and less costly for the government. METHODS:We conducted a discrete choice experiment (DCE) in a nationally representative sample of adults (n = 792) and parents of children (n = 609) with asthma. Mixed multinomial models were estimated and calibrated to reflect the estimated market shares of ICS-alone, ICS/LABA and no controller. We then simulated the impact of varying patient co-payment on demand and the financial impact on government pharmaceutical expenditure. RESULTS:Preference for inhaler decreased with increasing costs to the patient or government, increasing chance of a repeat visit to the doctor, and if fewer symptoms were present. Adults preferred high-strength controllers, but parents preferred low-strength inhalers for children (general beneficiaries only). The DCE predicted a higher proportion choosing controller treatment (89%) compared to current levels (57%) at the current co-payment level, with proportionately higher uptake of ICS-alone and a lower average cost per patient [32.73 Australian dollars (AU$) c.f. AU$38.54]. Reducing the co-payment on ICS-alone by 50% would increase its market share to 50%, whilst completely removing the co-payment would only have a small marginal impact on market share, but increased average cost of treatment to the government to AU$41.04 per person. CONCLUSIONS:Patient-directed financial incentives are unlikely to encourage much switching of medicines, and current levels of under-treatment are not explained by patient preferences. Interventions directed at prescribers are more likely to promote better use of asthma medicines.

journal_name

Pharmacoeconomics

journal_title

PharmacoEconomics

authors

Laba TL,Reddel HK,Zwar NJ,Marks GB,Roughead E,Flynn A,Goldman M,Heaney A,Lembke K,Jan S

doi

10.1007/s40273-018-0731-5

subject

Has Abstract

pub_date

2019-02-01 00:00:00

pages

227-238

issue

eissn

1170-7690

issn

1179-2027

pii

10.1007/s40273-018-0731-5

journal_volume

pub_type

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Does a Patient-Directed Financial Incentive Affect Patient Choices About Controller Medicines for Asthma? A Discrete Choice Experiment and Financial Impact Analysis.