Skip to main content

Table 3 Effectiveness and cost of the screening tests for dementia

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

24/25

1.00 (0.93-1.00)

0.38 (0.28-0.49)

0.59 (0.46-0.73)

0.30 (0.16-0.44)

47134.5

585.2

336.7 ± 169.9

MMSEc

24/25

1.00 (0.93-1.00)

0.37 (0.27-0.48)

0.58 (0.46-0.72)

0.29 (0.15-0.43)

47525.4

570.6

339.5 ± 168.2

MMSE

*

0.96 (0.86-0.99)

0.62 (0.51-0.72)

0.74 (0.60-0.89)

0.50 (0.36-0.64)

38621.7

377.9

275.9 ± 193.3

MIS#

3/4

0.93 (0.78-0.99)

0.80 (0.71-0.88)

0.83 (0.67-1.00)

0.63 (0.48-0.78)

23548.6

242.5

201.3 ± 193.4

MIS#

4/5

0.96 (0.78-1.00)

0.71 (0.61-0.80)

0.78 (0.73-1.00)

0.54 (0.38-0.69)

26632.5

295.6

227.6 ± 196.4

Phototest

26/27

0.81 (0.67-0.91)

0.89 (0.81-0.95)

0.86 (0.72-1.00)

0.70 (0.57-0.83)

29153.7

242.1

208.2 ± 196.8

  1. CoP: Cutoff point; Sn: sensitivity; Sp: specificity; DA: diagnostic accuracy (proportion of correct diagnoses); 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. *Cutoff points: 17/18: illiterates; 20/21: literate but did not complete primary schooling; 23/24: primary schooling or higher
  4. #Results for the 117 subjects who completed the MIS