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Table 4 Weighted kappa in subgroups (physicians and nurses) and 8 countries (≥ 100 pairs)

From: Reliability of the Clinical Frailty Scale in very elderly ICU patients: a prospective European study

Group profession N Weighted kappa 95% CI
ICU physician/ICU physician 785 0.87 0.85 to 0.89
ICU nurse/ICU nurse 57 0.92 0.87 to 0.97
Research staff/research staff 276 0.84 0.80 to 0.87
ICU nurse/ICU physician 162 0.77 0.71 to 0.83
ICU physician/ICU nurse 309 0.80 0.77 to 0.84
Group: information source    
 Patient/patient 394 0.85 0.82–0.88
 Family/family 818 0.89 0.87–0.90
 Hospital records/hospital records 187 0.89 0.85–0.92
Group: countries    
 England 397 0.90 0.87 to 0.97
 France 257 0.81 0.78 to 0.85
 Spain 186 0.89 0.85 to 0.93
 Poland 163 0.89 0.85 to 0.92
 Greece 133 0.89 0.85 to 0.94
 Germany 125 0.81 0.75 to 0.86
 Norway 110 0.71 0.63 to 0.78
 Portugal 106 0.82 0.76 to 0.89