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

Annals of Intensive Care

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

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