Figure 4
From: Performance of probable dementia classification in a European multi-country survey
Mean underreporting and 95% CI across countries. Solid vertical line indicates perfect overlap of the number of people living with ‘probable dementia’ in the test set when applying classification algorithms and the number of people living with dementia in the test set calculated based on previously reported population-level prevalence estimates16,17. The dashed vertical line indicates mean underreporting (light grey fill indicates 95% CI) when the number of people living with self-reported physician-diagnosis of dementia is compared to previously reported estimates. Points indicate mean underreporting (dark fill indicates 95% CI) when the number of people living with ‘probable dementia’ is compared to previously reported estimates. LW (Recall)P Langa–Weir algorithm with a Recall-cutoff reflecting country-level dementia prevalence and an IADL cutoff reflecting 1.5 IQR above Q316,17. Logistic Regression (GLM weighted), Random Forest (RF SMOTE) and XGBoost (XGB SMOTE).
