This SAS macro with documentation allows the user to compute First and Second Order agreement Coefficients (AC1 and AC2).

This is a SAS program that uses the AC1AC2 SAS macro to compute pairwise AC1 and AC2 agreement coefficients and confidence intervals. Pairwise agreement coefficients, confidence intervals based on the conditional variance and confidence intervals based on the unconditional variance are displayed nicely using PROC TABULATE. The AC1AC2 macro computes agreement coefficients derived in Kilem Gwet's book "Handbook of Inter-Rater Reliability: How to Measure the Level of Agreement Between Two or Multiple Raters" (2001, STATAXIS Publishing).

This is the presentation given at the 2007 SAS Global Forum accompanying the paper "Disagreement on Agreement: Two Alternative Agreement Coefficients" by Emily Blood and Kevin F. Spratt. The presentation explains Kilem Gwet's agreement coefficients and gives examples of the use of the AC1AC2 SAS macro.

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