TABLE 4.

Comparison of race/ethnicity-specific dementia prevalences, and prevalence ratios between race/ethnicity groups based on ADAMS gold-standard diagnoses vs. algorithmic diagnoses in wave A, weighted to represent US age >70 population in 2002

		Algorithmic diagnoses Estimated prevalence (difference between estimated and true prevalences) Estimated prevalence ratio (ratio of estimated to true prevalence ratios)
	ADAMS (true) diagnoses	Hurd probit model	Expert Model	Gradient boosting model	Conditional random forests	LASSO	Super Learner
True and estimated dementia prevalence
Non-Hispanic white	12.4%	14.9% (2.5%)	17.2% (4.9%)	17.8% (5.4%)	17.8% (5.4%)	18.7% (6.4%)	19.0% (6.6%)
Non-Hispanic black	22.2%	28.0% (5.8%)	27.4% (5.2%)	30.0% (7.8%)	26.3% (4.2%)	32.0% (9.8%)	30.8% (8.6%)
Hispanic	10.8%	16.7% (5.9%)	23.1% (12.3%)	25.8% (14.9%)	27.2% (16.4%)	32.8% (22%)	32.6% (21.8%)
True and estimated prevalence ratios
Non-Hispanic black vs. white	1.79	1.88 (1.05)	1.59 (0.89)	1.69 (0.94)	1.48 (0.83)	1.71 (0.95)	1.62 (0.90)
Hispanic vs. Non-Hispanic white	0.87	1.12 (1.28)	1.34 (1.54)	1.45 (1.65)	1.53 (1.75)	1.75 (2.01)	1.72 (1.97)
Non-Hispanic black vs. Hispanic	2.05	1.68 (0.82)	1.18 (0.58)	1.17 (0.57)	0.97 (0.47)	0.97 (0.47)	0.94 (0.46)