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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