Perioperative medicine & outcomes

Agreement between patient self-reported and assessor-rated frailty using the Clinical Frailty Scale

Br J AnaesthPublished Substudy of a prospective cohort study

Primary result · Agreement between self-rated and assessor-rated CFSResult — go to the resultMean difference 0.45 points 95% CI 0.39–0.52

Authors' conclusion

Patients self-report their frailty status using the CFS with moderate agreement to a trained frailty assessor. Self-reported and assessor-rated scores had similar predictive capability for postoperative death or new disability.

Study context

Population
People ≥65 yr having elective noncardiac surgery
Participants
531 people
Comparison
Patient self-reported vs trained assessor-rated Clinical Frailty Scale (CFS)
Primary endpoint
Agreement between self-reported and assessor-rated CFS (weighted kappa; Cohen's kappa for CFS≥4)
Follow-up
Preoperatively
Methodological detailsagreement study, multicentre
  • Agreement study
  • Multicentre

Primary result

As reported in the abstract

Agreement between self-rated and assessor-rated CFS

Mean difference

0.45 points

95% CI 0.39–0.52

P < 0.001

Assessor-rated vs Self-rated
mean difference 0.45 points (95% CI 0.39–0.52); P < 0.001
Weighted kappa, ordinal scale (moderate agreement)
0.58 (95% CI 0.53-0.63)
Cohen's kappa, dichotomised CFS≥4 (moderate agreement)
0.61 (95% CI 0.54-0.68)

Further findings

OutcomeC-statistic difference (95% CI)P value
Discrimination for death or new disability · 90 days after surgeryPaired ROC curve analysis0.010 (−0.072 to 0.092)P = 0.81

Discrimination for death or new disability · 90 days after surgery

No difference in discriminative capability

Original publication

Agreement between patient self-reported and assessor-rated frailty using the Clinical Frailty Scale. Br J Anaesth. Published 22 July 2026. doi:10.1016/j.bja.2026.05.029

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