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Development And Validation Of The Bilingual (english-malay) Version Of Knowledge On Calcium Supplement-12 (knowcas-12) Questionnaire

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dc.contributor.authorHizlinda Tohiden_US
dc.contributor.authorFathima Begum Syed Mohideenen_US
dc.contributor.authorAida Jaffaren_US
dc.contributor.authorTan Chai Engen_US
dc.contributor.authorNaemah Sariffudinen_US
dc.contributor.authorNoor Azimah Muhammaden_US
dc.date.accessioned2024-05-28T03:53:31Z
dc.date.available2024-05-28T03:53:31Z
dc.date.issued2016
dc.description.abstractTo date, specific questionnaire assessing knowledge on calcium supplement is unavailable. Thus, we aimed to develop and validate this questionnaire. Four areas of knowledge (calcium in general, dietary calcium, benefits and risk of calcium supplement, and practices that reduce its benefits) were identified through literature review and interviews with ten doctors. Twelve items were created in English and reviewed by two family medicine specialists, an orthopaedic surgeon, and a pharmacist. A bilingual (English-Malay) questionnaire was produced via back-to-back translation and face validity was tested on seven patients. Discriminative validation was done by comparing knowledge scores between patients, medical students and doctors. Test-retest reliability was tested with a two weeks interval. Subsequently, the questionnaire was piloted on 100 patients. The KnowCaS-12 scores of doctors were significantly higher than those of patients (p<0.001) and students (p<0.001), indicating good discriminative validity. Although the Cronbach’s alpha was 0.68, it had good test-retest reliability [Spearman’s rho correlation: 0.40, p=0.02; pre- and post-test score median (IQR): 8.00 (3.00) and 9.00 (2.00) respectively, p-value of Wilcoxon Signed Ranks test: 0.08). The pilot study showed 52.5% of the participants took calcium supplement. Their median (IQR) for KnowCaS-12 was 7.00 (6.00), which was not significantly different from those who did not take calcium supplement. In conclusion, the bilingual KnowCaS-12 questionnaire appears to have good content validity, face validity, discriminative validity and test-retest reliability, thus it can be used for future studies. Practice of consuming calcium supplement seems to be common and users’ knowledge regarding calcium supplement was only moderate. Keywords: questionnaire design, validation studies, knowledge, calcium, dietary supplementsen_US
dc.identifier.citationMalaysian Journal of Public Health Medicine 2016, Vol. 16 (3): 194-203en_US
dc.identifier.epage203
dc.identifier.issn1675-0306
dc.identifier.issue3
dc.identifier.other2030-1
dc.identifier.spage194
dc.identifier.urihttps://www.mjphm.org.my/mjphm/index.php?option=com_content&view=article&id=752:development-and-validation-of-the-bilingual-english-malay-version-of-knowledge-on-calcium-supplement-12-knowcas-12-questionnaire&catid=109:2016-volume-16-3&Itemid=123
dc.identifier.urihttps://oarep.usim.edu.my/handle/123456789/5200
dc.identifier.volume16
dc.language.isoenen_US
dc.publisherMalaysian Public Health Physicians' Associationen_US
dc.relation.ispartofMalaysian Journal of Public Health Medicineen_US
dc.subjectquestionnaire design,en_US
dc.subjectvalidation studies,en_US
dc.subjectknowledge,en_US
dc.subjectcalcium,en_US
dc.subjectdietary supplementsen_US
dc.titleDevelopment And Validation Of The Bilingual (english-malay) Version Of Knowledge On Calcium Supplement-12 (knowcas-12) Questionnaireen_US
dc.typeArticleen_US
dspace.entity.typePublication

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