Diagnostic Reversion in Dementia Care: A Real-World Analysis of Mild Cognitive Impairment Diagnoses Following Dementia in a Large Electronic Medical Record System
Miramontes, S.; Khan, U.; Zimmerman, S. C.; Ferguson, E. L.; Mills, H.; Oskotsky, B.; Phelps, E.; Oskotsky, T. L.; Capra, J. A.; Glymour, M. M. M.; Sirota, M.; Tsoy, E.
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Structured AbstractO_ST_ABSINTRODUCTIONC_ST_ABSIf mild cognitive impairment (MCI) is diagnosed after dementia, it suggests either the dementia diagnosis was premature, or the MCI diagnosis is incorrect. We investigated the prevalence and predictors of such "diagnostic reversion"--MCI diagnosis following dementia diagnosis--in a large academic health system. METHODSAmong 5,965 patients aged 50+ with incident dementia in UCSF Health electronic health records, we identified "reverters" with a subsequent MCI diagnosis. We used Group LASSO-regularized logistic regression and random forest models to identify predictors. RESULTSReversion occurred in 13.7% of patients. Lower odds were observed among older adults (OR=0.95/year; 95% CI: 0.92-0.98), while higher odds were found among Spanish speakers (OR=2.26; 95% CI: 1.28-4.00), those with greater cardiovascular risk (OR=1.16; 95% CI: 1.01-1.33), and higher Charlson comorbidity burden (OR=1.09; 95% CI: 1.05-1.14). DISCUSSIONDiagnostic reversion is common and socially patterned, suggesting contributions from misdiagnosis, clinical uncertainty, or variability in clinical presentation and care setting.
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