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Asthma treatment preference study: a conjoint analysis of preferred drug treatments
Gunnar Johansson1, Björn Ställberg, Göran Tornling
1Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Sweden. gunnar.johansson@lul.se
Objective:
Assessment of patient preferences for attributes of asthma treatments.
Methods:
Two hundred ninety-eight patients (age range, 18 to 60 years) from 15 centers in Sweden completed a questionnaire concerning their asthma, and ranked 18 alternative treatments using conjoint analysis. Patients were receiving treatment with either inhaled corticosteroids (ICS) and short-acting bronchodilator (n = 123) or ICS and long-acting bronchodilator (separate inhalers, n = 87; combination inhaler, n = 88). Attributes analyzed were maintenance treatment, additional reliever, time to onset and duration of reliever, number of symptom-free days (SFDs) per month, and out-of-pocket cost per month.
Results:
Conjoint analysis showed that the most important aspect of treatment was SFD. Forty percent of the patients had
Conclusion:
SFDs were the most important attribute in asthma treatment. Patients were willing to pay for a switch to their preferred treatment. The most favored treatments were a reliever therapy that is both rapid and long acting and a combination inhaler for both maintenance and as-needed use.
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