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Table 2 Spearman correlation and Kappa agreement between the two frailty measures

From: Comparison of the predictive ability of clinical frailty scale and hospital frailty risk score to determine long-term survival in critically ill patients: a multicentre retrospective cohort study

HFRS

CFS score

Spearman's Correlation(1)

Agreement(2)

Non-frail

(CFS < 5)

Frail

(CFS ≥ 5)

Correlation coefficient

(95% CI)

Kappa

All patients (n = 7001)

5678

1323

 

 HFRS (non-frail; n = 5164 [73.8%])

4332

832

0.13 (0.10–0.15)

0.12 (0.10–0.15)

 HFRS (frail; n = 1837 [26.2%])

1346

491

  1. HFRS hospital frailty risk score, CFS Clinical Frailty Scale
  2. (1) Spearman correlation based on continuous variables (p value was < 0.001)
  3. (2) Kappa agreement based on dichotomous variables (Except for Kappa agreement for patients needing mechanical ventilation (p = 0.004), all others had a p value of < 0.001)