Reliability and Validity of the Treatment Satisfaction with Medicines Questionnaire (SATMED-Q) in Persons with Arterial Hypertension

Jesús López-Torres López, Joseba Rabanales-Sotos, María Rosa López-Torres Hidalgo, Rosa María Milián García, Consuelo López Martínez and Gemma Blázquez Abellán
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Jesús López-Torres López: Community Pharmacy, 02005 Albacete, Spain
Joseba Rabanales-Sotos: Department of Nursing, Physiotherapy and Occupational Therapy, Albacete Nursing Faculty, University of Castile-La Mancha, 02071 Albacete, Spain
María Rosa López-Torres Hidalgo: Department of Medical Sciences, Albacete Faculty of Pharmacy, University of Castile-La Mancha, 02008 Albacete, Spain
Rosa María Milián García: Community Pharmacy, 02005 Albacete, Spain
Consuelo López Martínez: Community Pharmacy, 02005 Albacete, Spain
Gemma Blázquez Abellán: Department of Medical Sciences, Albacete Faculty of Pharmacy, University of Castile-La Mancha, 02008 Albacete, Spain

IJERPH, 2021, vol. 18, issue 6, 1-11

Abstract: Objective: To evaluate the reliability and validity of the Treatment Satisfaction with Medicines Questionnaire (SATMED-Q) in persons with arterial hypertension undergoing pharmacological treatment, along with its convergent validity with degree of control of blood pressure levels, therapeutic adherence, and tolerability of antihypertensive drugs. Methods: Observational cross-sectional study conducted on a sample of 484 persons. Treatment satisfaction was evaluated with the SATMED-Q, an instrument consisting of 17 items with six dimensions. Other variables were blood pressure, antihypertensive drugs, adverse effects, therapeutic adherence, and participants’ characteristics. Results: Cronbach’s alpha was 0.916. Factor analysis revealed six factors that could account for 89.97% of total variance. The test–retest reliability analysis yielded an intraclass correlation coefficient of 0.910 (95% CI = 0.806–0.959). In a possible range of 0 through 100 points, participant satisfaction with treatment ranged from 38.2 to 100 (mean 79.9 (SD = 12.9; 95% CI = 78.8–81.0); median 80.9). SATMED-Q scores were higher among persons who reported experiencing no adverse effects (82.5 ± 11.6 SD vs. 68.7 ± 11.9 SD; p < 0.001). Satisfaction levels were significantly lower among subjects not complying with the treatment (73.2 ± 12.9 vs. 82.1 ± 12.1; p < 0.001), and significantly higher among those presenting with controlled blood pressure levels (82.1 ± 12.1 SD vs. 77.5 ± 13.3 SD; p < 0.001). Conclusions: The SATMED-Q showed high internal consistency and good stability in the reliability analysis. It is an appropriate instrument for evaluating satisfaction with antihypertensive treatment, both in routine clinical practice and in community pharmacy or clinical research settings.

Keywords: hypertension; patient satisfaction; community pharmacy services (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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