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Table 3 Reliability and validation tests of CFS-C

From: Validation of clinical frailty scale in Chinese translation

Tests N Weighted kappa p-value Kendall’s tau p-value
Inter-rater reliability
 Physicians vs. research assistant 52 0.60  < .0001 0.67  < .0001
Criterion concurrent validity
 CFS-C categorisationa vs. Fried frailty phenotype 213 0.37  < .0001 0.46  < .0001
 CFS-C vs. FI-CGA 214 - - 0.64  < .0001
 CFS-C categorisationa vs. FI-CGA categorisationb 214 0.51  < .0001 0.63  < .0001
  1. Abbreviations: CFS-C Chinese version of Clinical Frailty Scale, FI-CGA Frailty Index based on a Comprehensive Geriatric Assessment
  2. a Robust: CFS-C 1–2, prefrail: CFS-C 3–4, frail: CFS-C 5–7
  3. b Robust: FI-CGA ≤ 0.08, prefrail: 0.08 < FI-CGA < 0.25, frail: FI-CGA ≥ 0.25