Academic Journal
Portuguese adaptation and psychometric validation of the Osteoporosis Knowledge Assessment Tool in community-dwelling adults.
| Τίτλος: | Portuguese adaptation and psychometric validation of the Osteoporosis Knowledge Assessment Tool in community-dwelling adults. |
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| Συγγραφείς: | Silva T; Nursing Research Innovation and Development Centre of Lisbon (CIDNUR), School of Nursing, Universidade de Lisboa, Lisbon, Portugal. Electronic address: tiagods88@gmail.com., Pimentel G; Nursing Research Innovation and Development Centre of Lisbon (CIDNUR), School of Nursing, Universidade de Lisboa, Lisbon, Portugal; Rheumatology Department, Unidade Local de Saúde de Coimbra, Coimbra, Portugal. Electronic address: georginaapimentel@gmail.com., Mateus E; Liga Portuguesa contra as Doenças Reumáticas, Lisbon, Portugal. Electronic address: elsafrazaomateus@gmail.com., Baixinho C; Nursing Research Innovation and Development Centre of Lisbon (CIDNUR), School of Nursing, Universidade de Lisboa, Lisbon, Portugal; Center for Innovative Care and Health Technology (ciTechcare), Polytechnic of Leiria, Leiria, Portugal. Electronic address: crbaixinho@enfermagem.ulisboa.pt., Costa A; Nursing Research Innovation and Development Centre of Lisbon (CIDNUR), School of Nursing, Universidade de Lisboa, Lisbon, Portugal; Laboratório Associado TERRA, Lisbon School of Medicine, Universidade de Lisboa, Lisbon, Portugal; Instituto de Saúde Ambiental (ISAMB), Lisbon School of Medicine, Universidade de Lisboa, Lisbon, Portugal. Electronic address: andreia.costa@enfermagem.ulisboa.pt., Ferreira RJO; Nursing Research Innovation and Development Centre of Lisbon (CIDNUR), School of Nursing, Universidade de Lisboa, Lisbon, Portugal; Rheumatology Department, Unidade Local de Saúde de Coimbra, Coimbra, Portugal; Laboratório Associado TERRA, Lisbon School of Medicine, Universidade de Lisboa, Lisbon, Portugal; Instituto de Saúde Ambiental (ISAMB), Lisbon School of Medicine, Universidade de Lisboa, Lisbon, Portugal. Electronic address: rf@enfermagem.ulisboa.pt. |
| Πηγή: | International journal of orthopaedic and trauma nursing [Int J Orthop Trauma Nurs] 2026 Aug; Vol. 62, pp. 101297. Date of Electronic Publication: 2026 Jun 20. |
| Τύπος έκδοσης: | Journal Article; Validation Study |
| Γλώσσα: | English |
| Στοιχεία περιοδικού: | Publisher: Elsevier Country of Publication: England NLM ID: 101528681 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1878-1292 (Electronic) Linking ISSN: 18781241 NLM ISO Abbreviation: Int J Orthop Trauma Nurs Subsets: MEDLINE |
| Imprint Name(s): | Original Publication: Oxford : Elsevier |
| Ιατρικοί όροι (MeSH): | Psychometrics* , Osteoporosis* , Health Knowledge, Attitudes, Practice*, Humans ; Middle Aged ; Female ; Portugal ; Aged ; Male ; Reproducibility of Results ; Surveys and Questionnaires ; Independent Living ; Translations |
| Περίληψη: | Background: Given the critical role of knowledge in prevention and management of osteoporosis and osteoporotic fractures, a culturally adapted instrument to assess osteoporosis-related knowledge among citizens is essential for patient education. Aim: This study aimed to translate, culturally adapt, and psychometrically validate the Osteoporosis Knowledge Assessment Tool (OKAT) for Portuguese adults aged 50 years and older. Methods: The study involved two phases: translation and cross-cultural adaptation, and evaluation of measurement properties. An expert committee developed a pre-final Portuguese OKAT, which was tested in adults aged 50-74 years, recruited from primary care and from a blood donation centre. Reliability was assessed via internal consistency (α, ω, KR-20), test-retest reproducibility (r, ICC), and item-level agreement (Cohen's Kappa). Item difficulty, discrimination, and readability were also evaluated. Known-groups validity was examined by comparing scores across sex, age, education, and prior osteoporosis diagnosis. Results: Phase A identified five items with semantic or conceptual challenges, resolved through expert consensus. In phase B, 153 participants (mean age 62 ± 7 years; 54% female) completed the Portuguese OKAT, showing borderline acceptable to acceptable internal consistency (α = 0.698; ω = 0.700; KR-20 = 0.698) and good test-retest (n = 20) reliability (ICC = 0.84; r = 0.84; Cohen's Kappa = 0.375-0.89, with four items yielding non-computable or negative values). Item difficulty and discrimination were appropriate, and readability was suitable (Flesch Reading Ease = 68.35). Women had statistically higher knowledge scores, but no significant differences were found for age, education, or prior diagnosis groups. Conclusions: The Portuguese version of OKAT demonstrated generally acceptable psychometric performance, supporting its use in adults aged ≥50y. Future research should confirm these findings in more diverse and representative populations. (Copyright © 2026 The Authors. Published by Elsevier Ltd.. All rights reserved.) |
| Competing Interests: | Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. |
| Contributed Indexing: | Keywords: Attitudes; Health knowledge; Nursing; Osteoporosis; Practice; Surveys and questionnaires; Validation study |
| Entry Date(s): | Date Created: 20260624 Date Completed: 20260827 Latest Revision: 20260827 |
| Update Code: | 20260828 |
| DOI: | 10.1016/j.ijotn.2026.101297 |
| PMID: | 42341407 |
| Βάση Δεδομένων: | MEDLINE |
| ISSN: | 1878-1292 |
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| DOI: | 10.1016/j.ijotn.2026.101297 |