The Simplified Medication Adherence Questionnaire: validation of a Brazilian-Portuguese version in hypertensive adults.

Background: Self-reported adherence scales are widely used in research and practice because they are low in cost and easy to apply. A free version in Brazilian-Portuguese of the Simplified Medication Adherence Questionnaire (SMAQ) can be a useful alternative for determining the adherent behavior of hypertensive patients. Purpose: To translate and evaluate the psychometric properties of the Brazilian-Portuguese version of the SMAQ therapeutic adherence scale for patients with arterial hypertension. Patients and methods: A multicenter, cross-sectional study was conducted in five outpatient units in Maceió-AL and Aracaju-SE between January and July 2019. A total of 117 patients aged over 18 years using antihypertensive drugs were recruited. The cross-cultural adaptation followed international methodological recommendations. Internal consistency (Cronbach's alpha) was tested as a reliability parameter. Criterion and construct validity were verified by concurrent validation, exploratory factor analysis (EFA), and validation by known groups. Results: The participants had a mean age of 56.6 years (SD = 10.7 years); most were female (72.6%). The mean number of antihypertensives prescribed per patient was 1.87 (SD = 0.87). There were 79.5% (n = 86) of patients considered non-adherent. Internal consistency was satisfactory (Cronbach's alpha = 0.63). A satisfactory correlation coefficient was verified with the Morisky-Green-Levine test as an external criterion (r = 0.56, p < 0.001). The scale's sensitivity measured through known group validity was 75.3%, specificity 29.5%, positive predictive value 63.9%, and negative predictive value 41.9%. We identified two factors of the instrument's construct from EFA: specific medication-taking behaviors and barriers to adherence. The initial KMO measure of sampling adequacy was 0.691, and Bartlett's test of sphericity was significant (χ2 = 118.342, p < 0.001). Conclusion: The Brazilian-Portuguese version of the SMAQ scale proved valid and reliable for determining adherence to the pharmacotherapy in hypertensive patients. It showed more ability to detect non-adherent patients but with low specificity, possibly influenced by high social desirability.

Improving Post-Discharge Medication Adherence in Patients with CVD: A Pilot Randomized Trial / Otimização da Adesão Terapêutica Pós-alta Hospitalar de Pacientes com DCV: Ensaio Clínico Randomizado - Estudo Piloto

Background: Effective interventions to improve medication adherence are usually complex and expensive. Objective: To assess the impact of a low-cost intervention designed to improve medication adherence and clinical outcomes in post-discharge patients with CVD. Method: A pilot RCT was conducted at a teaching hospital. Intervention was based on the four-item Morisky Medication Adherence Scale (MMAS-4). The primary outcome measure was medication adherence assessed using the eight-item MMAS at baseline, at 1 month post hospital discharge and re-assessed 1 year after hospital discharge. Other outcomes included readmission and mortality rates. Results: 61 patients were randomized to intervention (n = 30) and control (n = 31) groups. The mean age of the patients was 61 years (SD 12.73), 52.5% were males, and 57.4% were married or living with a partner. Mean number of prescribed medications per patient was 4.5 (SD 3.3). Medication adherence was correlated to intervention (p = 0.04) and after 1 month, 48.4% of patients in the control group and 83.3% in the intervention group were considered adherent. However, this difference decreased after 1 year, when adherence was 34.8% and 60.9%, respectively. Readmission and mortality rates were related to low adherence in both groups. Conclusion: The intervention based on a validated patient self-report instrument for assessing adherence is a potentially effective method to improve adherent behavior and can be successfully used as a tool to guide adherence counseling in the clinical visit. However, a larger study is required to assess the real impact of intervention on these outcomes. .

Fundamento: Intervenções eficazes para melhorar a adesão à terapia medicamentosa são geralmente complexas e caras. Objetivo: Avaliar o impacto de uma intervenção de baixo custo delineada para melhorar a adesão à medicação e desfechos clínicos em pacientes no pós-alta com DCV. Método: Um ECR - estudo piloto foi realizado em um hospital-escola. A intervenção foi baseada na escala de adesão terapêutica de Morisky de quatro itens - MMAS-4. O desfecho primário medido foi a avaliação da adesão à medicação utilizando a MMAS de oito itens no momento da alta, 1 mês após a alta hospitalar, e a reavaliação 1 ano depois da alta. Outros resultados incluíram reinternação e as taxas de mortalidade. Resultados: Foram randomizados 61 pacientes para grupos de intervenção (n = 30) e controle (n = 31). A idade média dos pacientes foi de 61 anos (DP 12,73), 52,5% eram do sexo masculino e 57,4% eram casados ou moravam com parceiro (a). O número médio de medicamentos prescritos por paciente foi de 4,5 (DP 3,3). A adesão à medicação foi correlacionada à intervenção (p = 0,04) e após 1 mês, 48,4% dos pacientes do grupo controle e 83,3% no grupo de intervenção foram considerados aderentes. No entanto, essa diferença diminuiu depois de 1 ano, quando a adesão foi de 34,8% e 60,9%, respectivamente. As taxas de readmissão e de mortalidade foram relacionadas à baixa adesão nos dois grupos. Conclusão: A intervenção com base em um instrumento validado de auto-relato do paciente para avaliar a adesão é um método potencialmente eficaz para melhorar o comportamento aderente e pode ser usado com sucesso como uma ferramenta para orientar o aconselhamento da adesão na visita ...

Improving post-discharge medication adherence in patients with CVD: a pilot randomized trial.

BACKGROUND: Effective interventions to improve medication adherence are usually complex and expensive. OBJECTIVE: To assess the impact of a low-cost intervention designed to improve medication adherence and clinical outcomes in post-discharge patients with CVD. METHOD: A pilot RCT was conducted at a teaching hospital. Intervention was based on the four-item Morisky Medication Adherence Scale (MMAS-4). The primary outcome measure was medication adherence assessed using the eight-item MMAS at baseline, at 1 month post hospital discharge and re-assessed 1 year after hospital discharge. Other outcomes included readmission and mortality rates. RESULTS: 61 patients were randomized to intervention (n = 30) and control (n = 31) groups. The mean age of the patients was 61 years (SD 12.73), 52.5% were males, and 57.4% were married or living with a partner. Mean number of prescribed medications per patient was 4.5 (SD 3.3). Medication adherence was correlated to intervention (p = 0.04) and after 1 month, 48.4% of patients in the control group and 83.3% in the intervention group were considered adherent. However, this difference decreased after 1 year, when adherence was 34.8% and 60.9%, respectively. Readmission and mortality rates were related to low adherence in both groups. CONCLUSION: The intervention based on a validated patient self-report instrument for assessing adherence is a potentially effective method to improve adherent behavior and can be successfully used as a tool to guide adherence counseling in the clinical visit. However, a larger study is required to assess the real impact of intervention on these outcomes.