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Table 2 Estimates of the variance components (between and within patients) and of the intraclass correlations (single rater and average of raters)

From: Reliability of computerized image analysis for the evaluation of serial synovial biopsies in randomized controlled trials in rheumatoid arthritis

Cell type Intra-observer Inter-observer
  Between patients Within patients ICC ICC of the mean of two observations Between patients Within patients ICC ICC of the mean of three observations
CD3+ cells 11.59 1.73 0.87 0.93 10.13 4.85 0.68 0.86
CD38+ cells 1.35 0.82 0.62 0.77 8.65 3.83 0.69 0.87
CD68+ cells 20.32 7.35 0.73 0.85 18.92 7.19 0.72 0.89
  1. ICC, intraclass correlation coefficient.