Cases Pre-Adoption Cases Post-Adoption Rate Ratio 95% CI p-value
Site 1 325 488 1.50 (1.30, 1.73) p < 0.0001
Site 2 560 672 1.20 (1.07, 1.34) p = 0.0016
Site 3 141 312 2.21 (1.81, 2.72) p < 0.0001