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EJNMMI Research

Table 2 Inter-rater reliability of readers on response assessment

From: Quantitation of cancer treatment response by 2-[18F]FDG PET/CT: multi-center assessment of measurement variability using AUTO-PERCIST™

 

Krippendorff alpha coefficient

of 13 readers on response

 

All reads

(n = 380a)

Reads with same target (n = 270a)

Response vs. no response

(CMR/PMR vs. SMD/PMD)

0.91

1.00

Clinical benefit vs. no benefit

(CMR/PMR/SMD vs. PMD)

0.81

1.00

Response categories (ordinal scale)

CMR vs. PMR vs. SMD vs. PMD

0.86

1.00

  1. aReads with missing response were excluded (10 for all reads and 1 for reads with same target)
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