Table 1. Reproducibility results for TRUST-MA and PCC
Measure TRUST-MA (n=51) PCC (n=24)
Mean±SD, ChatGPT 56.21±19.90 3.54±2.13
Mean±SD, Claude 64.28±18.22 3.54±2.15
Paired difference, Claude-ChatGPT 8.07 (95% CI 5.33-10.82) 0.00 (95% CI -0.51-0.51)
Paired comparison
ICC, absolute agreement
Lin CCC
Exact categorical agreement
Linear weighted κ
p<0.001
0.800 (0.698-0.868)
0.798 (0.695-0.867)
68.6% (54.9-80.4)
0.451 (0.265-0.618)
p=0.794
0.844 (0.541-0.955)
0.838 (0.530-0.954)
66.7% (45.8-83.3)
0.653 (0.353-0.840)

CI, confidence interval; CCC, concordance correlation coefficient; ICC, intraclass correlation coefficient; PCC, Practice Change Confidence; SD, standard deviation. Confidence intervals in parentheses for ICC, CCC, exact agreement, and κ were obtained by 10,000 bootstrap replicates.