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Table 4 Diagnostic accuracy of the BDST and the MMSE (95% confidence intervals in parentheses). SEN sensitivity, SPE specificity, AUC area under the curve, Demmo moderate dementia, Demmi mild dementia, Demmi_alz mild dementia Alzheimer’s disease, Demmi_other mild dementia, other types than Alzheimer’s disease, BDST Bamberg Dementia Screening Test, BDSTs Bamberg Dementia Screening Test, short form (sum score for the first and second subtest), BDSTus Bamberg Dementia Screening Test, ultra-short form (only score for the first subtest), MMST Mini-Mental State Examination. (1) Following the German Guideline for dementia, the MMSE scores were considered to distinguish between mild and moderate forms of dementia. Therefore, no measures of diagnostic accuracy can be presented for the MMSE and moderate dementia

From: Sensitivity and specificity of the Bamberg Dementia Screening Test’s (BDST) full and short versions: brief screening instruments for geriatric patients that are suitable for infectious environments

   Demmo vs. CNT Demmi vs. CNT Demmi_alz vs. CNT Demmi_other vs. CNT Demmi or Demmo vs. CNT
MMSE Cut-off (1) ≤ 26/30 ≤ 26/30 ≤ 26/30 ≤ 26/30
SEN .76 (.73–.79) .79 (.76–.83) .72 (.67–.76) .81 (.79–.83)
SPE .88 (.82–.93) .88 (.82–.93) .88 (.82–.93) .88 (.82–.93)
NPV .36 (.31–.41) .52 (.46–.59) .54 (.47–.60) .35 (.30–.40)
PPV .98 (.96–.99) .96 (.94–.98) .94 (.91–.97) .98 (.97–.99)
AUC .88 (.86–.91) .90 (.88–.92) .86 (.83–.88) .91 (.89–.93)
BDST Cut-off ≤ 31/50 ≤ 37/50 ≤ 37/50 ≤ 37/50 ≤ 37/50
SEN 1.000 .93 (.91–.94) .94 (.92–.96) .91 (.88–.94) .94 (.93–.95)
SPE 1.000 .82 (.75–.88) .82 (.75–.88) .82 (.75–.88) .82 (.75–.88)
NPV   .63 (.56–.70) .77 (.70–.84) .77 (.70–.84) .62 (.54–.69)
PPV   .97 (.96–.98) .95 (.93–.97) .93 (.90–.96) .98 (.97–.99)
AUC 1.000 .95 (.94–.97) .96 (.95–.97) .94 (.92–.96) .96 (.95–.97)
BDSTs Cut-off ≤ 15/18 ≤ 16/18 ≤ 16/18 ≤ 16/18 ≤ 16/18
SEN .94 (.91–.96) .84 (.81–.86) .87 (.85–.90) .79 (.75–.83) .86 (.84–.88)
SPE .93 (.89–.97) .70 (.62–.77) .70 (.62–.77) .70 (.62–.77) .70 (.62–.77)
NPV .88 (.82–.93) .40 (.34–.46) .59 (.52–.67) .55 (.48–.62) .26 (.22–.30)
PPV .97 (.94–.99) .95 (.93–.96) .92 (.89–.94) .87 (.84–.91) .99 (.98–.99)
AUC .97 (.95–.98) .86 (.83–.88) .89 (.86–.91) .81 (.78–.85) .88 (.86–.90)
BDSTus Cut-off ≤ 9/10 ≤ 9/10
SEN .85 (.81–.89) .58 (.55–.61)
SPE .86 (.81–.92) .85 (.79–.91)
NPV .74 (.67–.81) .20 (.16–.23)
PPV .93 (.89–.96) .97 (.96–.98)
AUC .90 (.87–.93) .73 (.70–.77)