| Title | Validation of a Latent Construct for Dementia in a Population-Wide Dataset from Singapore. |
| Publication Type | Journal Article |
| Year of Publication | 2017 |
| Authors | Peh, CXu, Abdin, E, Vaingankar, JA, Verma, S, Chua, BYiang, Sagayadevan, V, Seow, E, Zhang, YJ, Shahwan, S, Ng, LLing, Prince, M, Chong, SAnn, Subramaniam, M |
| Journal | J Alzheimers Dis |
| Volume | 55 |
| Issue | 2 |
| Pagination | 823-833 |
| Date Published | 2017 |
| ISSN | 1875-8908 |
| Abstract | BACKGROUND: The latent variable δ has been proposed as a proxy for dementia. Previous validation studies have been conducted using convenience samples. It is currently unknown how δ performs in population-wide data. OBJECTIVE: To validate δ in Singapore using population-wide epidemiological study data on persons aged 60 and above. METHODS: δ was constructed using items from the Community Screening Instrument for Dementia (CSI'D) and World Health Organization Disability Assessment Schedule (WHODAS II). Confirmatory factor analysis (CFA) was conducted to examine δ model fit. Convergent validity was examined with the Clinical Dementia Rating scale (CDR) and GMS-AGECAT dementia. Divergent validity was examined with GMS-AGECAT depression. RESULTS: The δ model demonstrated fit to the data, χ2(df) = 249.71(55), p CONCLUSION: The study found some support for δ as a proxy for dementia in Singapore based on population data. Both convergent and divergent validity were established. In addition, the δ model structure appeared to be influenced by age, gender, ethnicity, and education covariates. |
| DOI | 10.3233/JAD-160575 |
| Alternate Journal | J. Alzheimers Dis. |
| PubMed ID | 27802230 |
