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Table 1 Overview of correspondence of FP classification with the reference standard

From: Dutch family physicians’ awareness of cognitive impairment among the elderly

  PPV PPV women PPV men NPV NPV women NPV men
CAMCOG suggests: % (95 % CI) % (95 % CI) % (95 % CI) % (95 % CI) % (95 % CI) % (95 % CI)
Dementia or aMCI 47.1 (43.5 – 62.4) 55.8 (43.0 – 68.5) 35.3 (24.2 – 46.5) 87.5 (83.2 – 91.8) 87.8 (82.6 – 93.1) 87.1 (79.9 – 94.4)
Dementia 34.0 (24.8 – 43.2) 38.1 (27.5 – 48.9) 28.5 (17.9 – 39.0) 90.4 (86.5 – 94.3) 92.1 (87.9 – 96.2) 88.2 (81.1 – 95.4)
Dementia & iADLd a 25.6 (14.8 – 36.5) 32.5 (22.1 – 32.9) 16.9 (7.3 – 26.4) 93.8 (91.2 – 96.4) 93.0 (89.3 – 96.7) 94.8 (91.5 – 98.0)
Without outliersb       
Dementia or aMCI 51.9 (41.9 – 61.8) 60.7 (45.7 – 75.7) 40.3 (27.6 – 53.0) 88.2 (83.7 – 92.6) 87.5 (81.3 – 93.6) 89.0 (82.5 – 95.5)
Dementia 37.3 (28.4 – 46.2) 41.2 (28.4 – 54.1) 32.2 (19.9 – 44.4) 91.6 (88.0 – 95.3) 92.9 (88.7 – 97.2) 90.1 (83.7 – 96.4)
Dementia & iADLd a 26.5 (15.3 – 37.7) 31.8 (20.6 – 43.4) 19.8 (8.4 – 30.7) 94.4 (91.9 – 96.9) 94.2 (90.8 – 97.6) 94.6 (91.2 – 98.0)
  1. a Dependency on at least one instrumentalADL item of the Lawton and Brody scale [17]
  2. b Analysis without the cognitive classification of two FPs who were unaware of the cognitive status in a relatively high proportion of elderly (PCP 12 and 16 in the appendix)