Psychometric Properties of the Treatment Satisfaction with Medicines Questionnaire (SATMED-Q) in Patients with Diabetes, Arterial Hypertension and Heart Failure.

BACKGROUND

Satisfaction with medicines is crucial in indicating patient experiences with the treatment which impact medicine adherence and compliance.

AIM

The aim of this research was to adopt a general measure of patients' satisfaction with medicines, the Treatment Satisfaction with Medicines Questionnaire (SATMED-Q), to the Polish language (BMQ-PL).

MATERIALS AND METHODS

A total of 197 patients qualified for the research, with the following diagnoses: type 2 diabetes ( = 42), hypertension ( = 55) and heart failure ( = 100), aged 64.73 (SD = 13.27). The criterion-related validity was determined with the use of a Polish version of the Adherence to Refills and Medications Scale. Confirmatory and exploratory factor analyses were used.

RESULTS

The respondents' mean score was 73.63 (SD = 18.42). Cronbach's alpha for the entire instrument was 0.847. All items of the questionnaire were found to have a positive item-total correlation. A multifactorial linear regression model showed that a significant ( ˂ 0.05) independent variable increasing the SATMED-Q score for the whole group was educational level (vocational education R = 14.576; secondary education R = 14.055; higher education R = 19.372) and low adherence (R = -1.384) was a decreasing variable.

CONCLUSIONS

The present findings indicate a high level of reliability and validity of the translated SATMED-Q questionnaire, fully comparable to that of the original. The questionnaire can be used for the assessment of satisfaction with medicines among Polish patients.