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Table 5 Effectiveness and cost of screening tests for cognitive impairment

From: Effectiveness and costs of phototest in dementia and cognitive impairment screening

Test

CoP

Sn

Sp

DA

k

Total Cost (€)

Cost/CD

Mean cost (€)

MMSE

26/27

0.96 (0.90-0.99)

0.24 (0.13-0.37)

0.69 (0.55-0.84)

0.24 (0.06-0.43)

55821.3

577.9

398.7 ± 114.2

MMSEc

26/27

0.96 (0.90-0.99)

0.27 (0.16-0.41)

0.69 (0.56-0.84)

0.27 (0.09-0.45)

55582.8

575.4

393.4 ± 121.8

MIS#

4/5

0.73 (0.61-0.84)

0.87 (0.75-0.94)

0.79 (0.64-0.97)

0.59 (0.45-0.74)

33582.9

363.3

287.0 ± 197.4

Phototest

28/29

0.69 (0.58-0.79)

0.93 (0.82-0.98)

0.78 (0.64-0.95)

0.58 (0.45-0.74)

42014.0

379.8

300.1 ± 195.6

  1. CoP: Cutoff point; Sn: sensitivity; Sp: specificity; DA: diagnostic accuracy (proportion correct diagnosis); k: kappa index. Cost/CD: total cost divided by n° correct diagnoses. Mean cost: mean ± sd. In brackets, 95% confidence interval.
  2. MMSE: MiniMental State Examination. MMSEc: MMSE with corrected scores. MIS: Memory Impairment Screen
  3. #Results for the 117 subjects who completed the MIS