Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theory
Abstract Background The Generic Adherence for Chronic Diseases Profile is a French generic scale (GACID-P) developed to measure adherence in several disease areas such as cardiology, rheumatology, diabetes, cancer and infectiology. Method We aimed to study the measurement invariance of the Generic A...
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| Format: | Article |
| Language: | English |
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BMC
2023-05-01
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| Series: | Health and Quality of Life Outcomes |
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| Online Access: | https://doi.org/10.1186/s12955-023-02130-0 |
| _version_ | 1827933226264428544 |
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| author | Christine Rotonda F. Guillemin T Conroy C. Alleyrat B. Lefevre M. Soudant C. Tarquinio |
| author_facet | Christine Rotonda F. Guillemin T Conroy C. Alleyrat B. Lefevre M. Soudant C. Tarquinio |
| author_sort | Christine Rotonda |
| collection | DOAJ |
| description | Abstract Background The Generic Adherence for Chronic Diseases Profile is a French generic scale (GACID-P) developed to measure adherence in several disease areas such as cardiology, rheumatology, diabetes, cancer and infectiology. Method We aimed to study the measurement invariance of the Generic Adherence for Chronic Diseases Profile by an item response model, optimize the new instrument version from item response model and qualitative content analyses results, and validate the instrument. The metric properties of the optimized version were studied according to classical test theory and item response model analysis. Results A sample of 397 patients consulting at two French hospitals (in diabetes, cardiology, rheumatology, cancerology and infectiology) and in four private practices was recruited; 314 (79%) patients also completed the questionnaire 15 days later. Factor analyses revealed four dimensions: “Forgetting to take medication”, “Intention to comply with treatment”, “Limitation of risk-related consumer habits” and “Healthy lifestyle”. The item response model and content analyses optimized these four dimensions, regrouping 32 items in four dimensions of 25 items, including one item conditioned on tobacco use. The psychometric properties and scale calibration were satisfactory. One score per dimension was calculated as the sum of the items for the dimensions “Forgetting to take medication” and “Intention to comply with treatment” and as a weighted score according to the item response model analysis for the two other dimensions because of differential item functioning found for two items. Conclusion Four adherence profile scores were obtained. The instrument validity was documented by a theoretical approach and content analysis. The Generic Adherence for Chronic Diseases Profile is now available for research targeting adherence in a broad perspective. |
| first_indexed | 2024-03-13T07:21:48Z |
| format | Article |
| id | doaj.art-ffad018dd3294b02a6a514cd0d4e0ec8 |
| institution | Directory Open Access Journal |
| issn | 1477-7525 |
| language | English |
| last_indexed | 2024-03-13T07:21:48Z |
| publishDate | 2023-05-01 |
| publisher | BMC |
| record_format | Article |
| series | Health and Quality of Life Outcomes |
| spelling | doaj.art-ffad018dd3294b02a6a514cd0d4e0ec82023-06-04T11:39:06ZengBMCHealth and Quality of Life Outcomes1477-75252023-05-0121111110.1186/s12955-023-02130-0Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theoryChristine Rotonda0F. Guillemin1T Conroy2C. Alleyrat3B. Lefevre4M. Soudant5C. Tarquinio6Université de Lorraine, Centre Pierre JanetCHRU Nancy, Inserm, Université de Lorraine, CIC, Epidémiologie CliniqueUniversité de Lorraine, APEMAC, équipe MICSCHRU Nancy, Inserm, Université de Lorraine, CIC, Epidémiologie CliniqueInstitut de Cancérologie de Lorraine, Department of Medical OncologyCHRU Nancy, Inserm, Université de Lorraine, CIC, Epidémiologie CliniqueUniversité de Lorraine, Centre Pierre JanetAbstract Background The Generic Adherence for Chronic Diseases Profile is a French generic scale (GACID-P) developed to measure adherence in several disease areas such as cardiology, rheumatology, diabetes, cancer and infectiology. Method We aimed to study the measurement invariance of the Generic Adherence for Chronic Diseases Profile by an item response model, optimize the new instrument version from item response model and qualitative content analyses results, and validate the instrument. The metric properties of the optimized version were studied according to classical test theory and item response model analysis. Results A sample of 397 patients consulting at two French hospitals (in diabetes, cardiology, rheumatology, cancerology and infectiology) and in four private practices was recruited; 314 (79%) patients also completed the questionnaire 15 days later. Factor analyses revealed four dimensions: “Forgetting to take medication”, “Intention to comply with treatment”, “Limitation of risk-related consumer habits” and “Healthy lifestyle”. The item response model and content analyses optimized these four dimensions, regrouping 32 items in four dimensions of 25 items, including one item conditioned on tobacco use. The psychometric properties and scale calibration were satisfactory. One score per dimension was calculated as the sum of the items for the dimensions “Forgetting to take medication” and “Intention to comply with treatment” and as a weighted score according to the item response model analysis for the two other dimensions because of differential item functioning found for two items. Conclusion Four adherence profile scores were obtained. The instrument validity was documented by a theoretical approach and content analysis. The Generic Adherence for Chronic Diseases Profile is now available for research targeting adherence in a broad perspective.https://doi.org/10.1186/s12955-023-02130-0Adherence profileGenericThe generic adherence for chronic Diseases ProfileValidationItem response theory |
| spellingShingle | Christine Rotonda F. Guillemin T Conroy C. Alleyrat B. Lefevre M. Soudant C. Tarquinio Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theory Health and Quality of Life Outcomes Adherence profile Generic The generic adherence for chronic Diseases Profile Validation Item response theory |
| title | Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theory |
| title_full | Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theory |
| title_fullStr | Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theory |
| title_full_unstemmed | Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theory |
| title_short | Validation and optimization of the French Generic Adherence for Chronic Diseases Profile (GACID-P) using classical test and item response theory |
| title_sort | validation and optimization of the french generic adherence for chronic diseases profile gacid p using classical test and item response theory |
| topic | Adherence profile Generic The generic adherence for chronic Diseases Profile Validation Item response theory |
| url | https://doi.org/10.1186/s12955-023-02130-0 |
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