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Table 2 Agreement analyses between different observers of the ECOG PS, KPS and FAF

From: The Functionality Assessment Flowchart (FAF): a new simple and reliable method to measure performance status with a high percentage of agreement between observers

PS Scales

Agreement* (%) (95 % CI)

Unweighted kappa (95 % CI)

Weighted kappa (95 % CI)

Spearman’s correlation (95 % CI)

ECOG-PS

67.0 (50.0–88.0) a, b

0.561 (0.427–0.695) 1

0.763 (0.679–0.847) 3

0.890 (0.833–0.928)

KPS

49.4 (35.1–67.5) b

0.396 (0.272–0.520) 2

0.747 (0.672–0.822) 3

0.905 (0.855–0.938)

FAF

78.2 (59.8–100) a

0.709 (0.600–0.819) 3

0.826 (0.741–0.911) 4

0.893 (0.837–0.930)

  1. *Overall absolute agreement rate. Different letters indicate significant results (ECOG-PS versus KPS, p = 0.144; ECOG-PS versus FAF, p = 0.413; KPS versus FAF, p = 0.023). 1 Moderate agreement; 2 fair agreement; 3 substantial agreement; 4 nearly perfect agreement
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BMC Cancer

ISSN: 1471-2407

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