Compreensão da prescrição de medicamentos em uma unidade básica de saúde: autorrelato do usuário e aferição pelo pesquisador

Abstract

Aims: To evaluate the understanding of drug prescriptions by patients, comparing the user self-report with the researcher assessment. Methods: A cross-sectional study was conducted from November 2013 to February 2014 at a Basic Health Unit in the city of Belo Horizonte, Minas Gerais, Brazil. Users 18 years of age or older who sought medicines in the unit's pharmacy, for themselves or for minors under their care, were interviewed. The selection of the sample was non-probabilistic, for convenience. During the interview, the users informed if they had understood the following data of the prescriptions: drug name, dose and frequency of administration. Participants then repeated the data for researchers, being allowed to check the prescriptions at the same time. After the interviews, the answers to the questions were interpreted by the researchers, who evaluated the agreement between the information provided by the users and the actual instructions of the recipes, using the Kappa test. Results: Data were collected from 69 users of the unit's pharmacy (corresponding to 69 delivered prescriptions). Fifty-nine (85.5%) users reported having understood all the prescriptions data (self-report), while according to the measurement of the researchers, 23 (33.3%) were the respondents who simultaneously understood all data, relating to the name of the drug, number of daily doses and schedule. Kappa test indicated a degree of agreement between self-report and measurement of researchers of 0.138 (slight) considering all items of the prescription, and specifically on the number of doses the agreement was -0.055 (poor). Conclusions: Self-reported rate of patient's understanding of drug prescriptions was higher than the assessed by the researchers. This result suggests that self-report of patients with respect to the understanding of prescriptions has limitations and should be interpreted with caution both in research and in clinical practice. It is recommended to enhance the means of providing information to patients, in order to contribute to the proper understanding of drug prescriptions.