Kathryn L Anderson1, Emily H Dothard1, Karen E Huang1, Steven R Feldman2. 1. Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, North Carolina. 2. Center for Dermatology Research, Department of Dermatology, Wake Forest School of Medicine, Winston-Salem, North Carolina2Department of Pathology, Wake Forest School of Medicine, Winston-Salem, North Carolina3Department of Public Health Sciences, Wake For.
Abstract
IMPORTANCE: Treatment outcomes depend on adherence to the prescribed regimen. Primary nonadherence refers to not obtaining and starting to take a prescribed medication. The frequency of primary nonadherence to acne treatment has not been well characterized. The complexity of multidrug acne regimens may add to this problem but, to our knowledge, has not been explored. OBJECTIVES: To estimate acne treatment primary nonadherence rates and to determine the relationship between primary nonadherence and the number of acne treatments prescribed. DESIGN, SETTING, AND PARTICIPANTS: A review of medical records from an outpatient university dermatology clinic identified patients with an acne diagnosis at a dermatology visit in the past 3 months who were prescribed 1, 2, or 3 or more treatments. Patients were excluded if they were not English speakers, were not prescribed treatment for their acne, or did not have an active telephone number. Using randomized lists, these patients were queried via telephone regarding which acne treatments they obtained. The results were analyzed using Fisher exact tests and multivariable logistic regression. For patients who were prescribed 1, 2, or 3 or more treatments, 47, 48, and 48 eligible patients were contacted, respectively. MAIN OUTCOMES AND MEASURES: The primary study outcomes were the overall rate of primary nonadherence and the rate for each treatment-number subgroup. Secondary outcomes included the association of sex, age, medication type, and electronic prescription status with primary nonadherence. RESULTS: Overall, 27% of patients did not fill all their prescriptions. Of patients who were given 1, 2, or 3 or more treatments, 9%, 40%, and 31%, respectively, did not fill all their prescriptions. There was no statistically significant difference by sex or age for primary nonadherence in any of the 3 treatment-number groups. Based on multivariable analyses, being prescribed a topical retinoid (odds ratio, 2.9; 95% CI, 1.0-8.0) or an over-the-counter product (odds ratio, 3.6; 95% CI, 1.1-12.3) was associated with primary nonadherence. Based on univariate analysis, there was less primary nonadherence with electronic prescriptions compared with paper prescriptions (P < .001). CONCLUSIONS AND RELEVANCE: Primary adherence to an acne treatment regimen is better when only 1 treatment is prescribed. Some patients may not complete acne treatment because 1 or more of their medications were never obtained.
IMPORTANCE: Treatment outcomes depend on adherence to the prescribed regimen. Primary nonadherence refers to not obtaining and starting to take a prescribed medication. The frequency of primary nonadherence to acne treatment has not been well characterized. The complexity of multidrug acne regimens may add to this problem but, to our knowledge, has not been explored. OBJECTIVES: To estimate acne treatment primary nonadherence rates and to determine the relationship between primary nonadherence and the number of acne treatments prescribed. DESIGN, SETTING, AND PARTICIPANTS: A review of medical records from an outpatient university dermatology clinic identified patients with an acne diagnosis at a dermatology visit in the past 3 months who were prescribed 1, 2, or 3 or more treatments. Patients were excluded if they were not English speakers, were not prescribed treatment for their acne, or did not have an active telephone number. Using randomized lists, these patients were queried via telephone regarding which acne treatments they obtained. The results were analyzed using Fisher exact tests and multivariable logistic regression. For patients who were prescribed 1, 2, or 3 or more treatments, 47, 48, and 48 eligible patients were contacted, respectively. MAIN OUTCOMES AND MEASURES: The primary study outcomes were the overall rate of primary nonadherence and the rate for each treatment-number subgroup. Secondary outcomes included the association of sex, age, medication type, and electronic prescription status with primary nonadherence. RESULTS: Overall, 27% of patients did not fill all their prescriptions. Of patients who were given 1, 2, or 3 or more treatments, 9%, 40%, and 31%, respectively, did not fill all their prescriptions. There was no statistically significant difference by sex or age for primary nonadherence in any of the 3 treatment-number groups. Based on multivariable analyses, being prescribed a topical retinoid (odds ratio, 2.9; 95% CI, 1.0-8.0) or an over-the-counter product (odds ratio, 3.6; 95% CI, 1.1-12.3) was associated with primary nonadherence. Based on univariate analysis, there was less primary nonadherence with electronic prescriptions compared with paper prescriptions (P < .001). CONCLUSIONS AND RELEVANCE: Primary adherence to an acne treatment regimen is better when only 1 treatment is prescribed. Some patients may not complete acne treatment because 1 or more of their medications were never obtained.
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