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Table 4 Validation of cognitive impairment reported by the surgeons using dementia and/or IQCODE

From: Validation of orthopaedic surgeons’ assessment of cognitive function in patients with acute hip fracture

  Validation criteria
Dementiaa Dementia and/or IQCODE > 3.44b Dementia and/or IQCODE > 4.0b
Sensitivity (CI) 79.5% 62.4% 69.2%
Specificity (CI) 88.2% 89.5% 89.6%
Positive predictive value (CI) 71.5% 79.4% 78.1%
Negative predictive value (CI) 92.0% 78.5% 84.4%
  1. aDementia registered in patients` medical journal
  2. bDementia registered in patients` medical journal and/or IQCODE> 3.44 vs. > 4.0 registered in the local hospital database
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