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Table 3 Diagnostic values of the screening tools* for development of disabilities, mortality and hospital admission

From: The predictive validity of three self-report screening instruments for identifying frail older people in the community

  Sensitivity (95% C.I.) Specificity (95% C.I.) Positive predicted value (95% C.I.) Negative predicted value (95% C.I.) Area under the Curve (95% C.I.)
Development of Disabilities (n = 426)
GFI 71 (62-79) 63 (57-68) 38 (31-45) 87 (81-90) 67 (61-73)
TFI 62 (52-71) 71 (65-76) 40 (33-49) 85 (80-89) 66 (60-72)
SPQ 83 (74-89) 48 (42-54) 34 (29-41) 89 (83-93) 65 (60-71)
Mortality (n = 532)
GFI 73 (44-91) 54 (50-58) 4 (2-8) 98 (96-99) 64 (50-77)
TFI 67 (39-87) 61 (56-65) 5 (2-8) 98 (96-99) 64 (50-78)
SPQ 71 (42-90) 41 (37-46) 3 (1-6) 98 (94-98) 56 (42-71)
Hospital admission (n = 430)
GFI 52 (40-64) 55 (50-60) 20 (15-26) 84 (79-89) 54 (46-61)
TFI 53 (41-64) 65 (60-70) 24 (18-32) 87 (82-90) 60 (52-67)
SPQ 76 (65-85) 44 (39-49) 22 (17-28) 90 (84,94) 60 (53-67)
  1. *Cut-off scores: GFI ≥4, TFI ≥5, SPQ ≥ 2
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