Towards improving diagnosis of memory loss in general practice: TIMeLi diagnostic test accuracy study protocol

BMC Primary Care

Table 4 Sample size for diagnostic test accuracy study, assuming specificity of 95 % and prevalence of dementia of 75 %

Lower 95 % confidence interval of specificity	Number of healthy people needed for lower confidence interval	Number of people with dementia needed for lower confidence interval	Total sample size
85 %	93	279	372
80 %	50	150	200
75 %	34	102	136

ISSN: 2731-4553