OBJECTIVES : Evaluate the acceptability, ceiling and floor effects, reliability and construct validity of the Brazilian version of the Treatment Satisfaction Questionnaire for Medication (TSQM - version 1.4) in patients with hypertension.

METHODS : The sample consisted of 300 hypertensive patients with undergoing treatment in an outpatient department. The acceptability was evaluated from the items not answered in TSQM. The reliability of the TSQM was estimated thought Cronbach’s alpha. Construct validity was evaluated by known group analysis to test if TSQM discriminates satisfaction between in different stages of hypertension, diagnoses of Left Ventricular Hypertrophy (LVH), medication adherence and occurrence of side effects and Convergent validity between patient satisfaction and medication adherence measures.

RESULTS : TSQM had high acceptability (99% of participants answered all items). A ceiling effect was found in the Side Effect domain (89%), even though this might be a characteristic of the scoring for this subscale. Reliability evaluated with Cronbach’s alphas showed values >0.76 in all domains. Known groups validity was supported with a statistically significant difference in patient satisfaction effectiveness between the hypertension groups and on those without-LVH. Regarding medication adherence, the TSQM was able to discriminate satisfaction in the Side Effect and Global Satisfaction domains. A significantly higher satisfaction was found in all domains of the TSQM on those patients without side effect. Convergent validity was partially supported between TSQM and adherence measures with significant negative correlations of weak magnitude with the Side Effects, Global Satisfaction and Convenience domains.

CONCLUSIONS : TSQM is reliable and valid questionnaire to be used in Brazilian hypertensive population.