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Table 3 Performance of K-CFS against that of K-FRAIL, KG-7, Korean frailty index, and ECOG and Pearson’s correlations between K-CFS and other scales

From: Translation and validation of the Korean version of the clinical frailty scale in older patients

 

1 Very fit

2 Well

3 Managing well

4 Vulnerable

5 Mildly frail

6 Moderately frail

7 Severely frail

8 Very severely frail

9 Terminally ill

Ra

Rsa

K-FRAIL

         

0.8053*

0.8048*

 Mean (SD)

0.3 (0.5)

0.7 (0.8)

0.8 (1.3)

1.3 (0.9)

3.3 (0.9)

3.8 (0.4)

3.5 (1.0)

3.7 (0.5)

2.9 (1.2)

  

 Median (IQR)

0 (0–1)

0.5 (0–1)

0 (0–1)

1 (1–2)

3.5 (3–4)

4 (4–4)

4 (3–4)

4 (3–4)

3 (2–3.5)

  

KG-7

         

−0.8846*

−0.8860*

 Mean (SD)

6.7 (0.7)

5.4 (1.2)

5.5 (1.0)

4.3 (1.1)

3.4 (0.7)

1.8 (1.0)

1.0 (1.2)

0.8 (1.0)

3.9 (2.0)

  

 Median (IQR)

7 (7–7)

5 (5–6.5)

6 (5–6)

4 (3–5)

3.5 (3–4)

1.5 (1–2)

1 (0–1)

1 (0–1)

3.5 (2–5.5)

  

Korean frailty index

         

0.7742*

0.7883*

 Mean (SD)

1.2 (1.3)

3.3 (1.4)

2.2 (1.4)

4.3 (1.4)

5.8 (1.1)

5.2 (0.9)

6.2 (1.2)

6.8 (1.1)

4.9 (1.5)

  

 Median (IQR)

1 (0–2)

3 (2–5)

3 (1–3)

4 (3–5.5)

6 (5.5–6)

5.5 (4–6)

6.5 (5–7)

7 (6–8)

5 (3.5–6)

  

ECOG PS

        

0.9190*

0.9184*

 0

8 (80.0)

3 (25.0)

2 (18.2)

1 (6.3)

0

0

0

0

1 (12.5)

  

 1

2 (20.0)

9 (75.0)

9 (81.8)

13 (81.3)

1 (8.3)

1 (8.3)

0

0

2 (25.0)

  

 2

0

0

0

2 (12.5)

8 (66.7)

8 (66.8)

2 (20.0)

0

4 (50.0)

  

 3

0

0

0

0

3 (25.0)

8 (80.0)

8 (80.0)

3 (30.0)

1 (12.5)

  

 4

0

0

0

0

0

0

0

7 (70.0)

0

  
  1. K-CFS Clinical Frailty Scale-Korean, K-FRAIL Korean version of the fatigue, resistance, ambulation, illness, and loss of weight, KG-7 Korean Cancer Study Group Geriatric Score, ECOG PS Eastern Cooperative Oncology Group Performance Status
  2. R and Rs were calculated using Pearson correlation and Spearman correlation, respectively
  3. P for trends for all the variables were statistically significant (p < 0.001)
  4. We excluded participants who were assigned to scale 9 (terminally ill) on the Clinical Frailty Scale-Korean
  5. *p < 0.01