{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,9]],"date-time":"2026-05-09T11:58:01Z","timestamp":1778327881914,"version":"3.51.4"},"reference-count":35,"publisher":"FapUNIFESP (SciELO)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sao Paulo Med. J."],"published-print":{"date-parts":[[2013,4]]},"abstract":"<jats:p>CONTEXT AND OBJECTIVES The Beliefs about Medicines Questionnaire (BMQ-Specific) has proven useful for measuring patients' beliefs and associating them with non-adherence to treatment in several illness groups. The aim was to cross-culturally adapt the BMQ-Specific into Portuguese for the general population of medicine users. DESIGN AND SETTING Cross-sectional study conducted among users of public hospitals and outpatient clinics in Guarda and Covilh\u00e3, Portugal. METHODS The BMQ-Specific was translated using international recommendations for performing cross-cultural adaptation and was administered to 300 patients. An initial principal component analysis (PCA) was conducted with the extraction criterion of eigenvalue &gt; 1.0, followed by a second PCA with restriction to two components. Reliability was assessed by calculating Cronbach's alpha coefficient. RESULTS The mean scores obtained for the Necessity and Concerns subscales of the Portuguese BMQ-Specific were 19.9 (standard deviation, SD = 2.8) (range 10 to 25) and 17.7 (SD = 3.9) (range 6 to 30), respectively. The first PCA produced an unstable three-component structure for the Portuguese BMQ-Specific. The final PCA solution yielded a two-component structure identical to the original English version (a five-item Necessity and a six-item Concerns subscale), and explained 44% of the variance. Cronbach's alpha for the complete Portuguese BMQ-Specific was 0.70, and 0.76 and 0.67 for the Necessity and Concerns subscales, respectively. CONCLUSION A cross-culturally adapted Portuguese version of the BMQ-Specific questionnaire for use among the general population of medicine users was obtained, presenting good internal consistency and component structure identical to the original English version.<\/jats:p>","DOI":"10.1590\/s1516-31802013000100018","type":"journal-article","created":{"date-parts":[[2017,3,8]],"date-time":"2017-03-08T12:36:16Z","timestamp":1488976576000},"page":"88-94","source":"Crossref","is-referenced-by-count":39,"title":["Cross-cultural adaptation of the Beliefs about Medicines Questionnaire into Portuguese"],"prefix":"10.1590","volume":"131","author":[{"given":"Teresa","family":"Salgado","sequence":"first","affiliation":[{"name":"Universidade de Lisboa, Portugal"}]},{"given":"Alexandra","family":"Marques","sequence":"additional","affiliation":[{"name":"Universidade de Lisboa, Portugal"}]},{"given":"Leonor","family":"Geraldes","sequence":"additional","affiliation":[{"name":"Universidade de Lisboa, Portugal"}]},{"given":"Shalom","family":"Benrimoj","sequence":"additional","affiliation":[{"name":"University of Technology Sydney, Australia"}]},{"given":"Robert","family":"Horne","sequence":"additional","affiliation":[{"name":"University College London, United Kingdom"}]},{"given":"Fernando","family":"Fernandez-Llimos","sequence":"additional","affiliation":[{"name":"Universidade de Lisboa, Portugal"}]}],"member":"530","reference":[{"key":"ref1","series-title":"Adherence to long-term therapies: evidence for action","year":"2003"},{"key":"ref2","doi-asserted-by":"crossref","first-page":"1180","DOI":"10.1111\/j.1475-6773.2011.01250.x","article-title":"Does medication adherence lower Medicare spending among beneficiaries with diabetes?","volume":"46(4)","author":"Stuart B","year":"2011","journal-title":"Health Serv Res"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"74","DOI":"10.1016\/j.clinthera.2011.01.019","article-title":"A review of diabetes treatment adherence and the 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