Screening for Dementia: Summary of the Evidence. Table 2. Estimates of Undiagnosed Dementia in Primary Care Practices

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Study, year	Setting	Age of patient population	Reference standard	Prevalence of undiagnosed dementia in all patients, %
Olafsdottir, et al., 2000²⁶	Primary health center, Sweden	≥ 70 years	DSM-IIIR¹	12.0
Eefsting, et al., 1996³²	Community and general practices, Netherlands	≥ 65 years	DSM-III¹	3.2
Valcour, et al., 2000²⁷	General internal medicine clinic, Hawaii	≥ 65 years	DSM-IIIR¹	5.7
Sternberg, et al., 2000³³	General, randomly sampled community, Canada	≥ 65 years	DSM-IIIR¹	1.8
¹ Note: DSM-III indicates Diagnostic and Statistical Manual, third edition; DSM-III-R, Diagnostic and Statistical Manual, third edition: revised.