Validation of a 14-item self-reporting questionnaire for the screening of dementia in the elderly

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Ruetairat Sangna, M.D.
Kanokporn Pinyopornpanish, M.D.
Wichuda Jiraporncharoen, M.D.
Chaisiri Angkurawaranon, M.D.

Abstract

Objective: To study the sensitivity, specificity, positive and negative predictive values (PPV and NPV) and the area under the ROC curve of the 14- item Thai dementia screening tool in an elderly population.


Methods: A psychometric properties of dementia screening test study was carried out using interview and questionnaires among elderly aged 60 years and over. The 14- item Thai dementia screening tool was assessed for its validity, including sensitivity, specificity, predictive values and AUC-ROC in detecting dementia and mild cognitive impairment (MCI). The MSET10 and the Montreal Cognitive Assessment (MoCA) were used as gold standard, respectively.


Results: Of a total 305 participants, 62.9% were female. The average age of the sample was 68.1 years (SD=7.2). For dementia screening, the sensitivity of the 14- item Thai dementia screening tool was 36.4%, the specificity was 96.5%, PPV and NPV were 44.4% and 95.1% respectively, and the AUC-ROC was 0.6. For MCI screening, the sensitivity, specificity, PPV, NPV of the tool were 7.6%, 97.2%, 83.3%, 36.6% respectively, and the AUC-ROC was 0.5.


Conclusion: The 14- item Thai dementia screening tools has only low-level sensitivity in detection of dementia and is unlikely to detect MCI. These findings indicate that the use of this test needs to be reviewed as a means of screening for dementia.

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References

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