TABLE 3.

Comparison of area under ROC curves between the CART-derived and other time-to-appropriate-therapy hour breakpoints

Time-to-appropriate-therapy windows (in h)Area under ROC curve (c-statistic)95% CIPa
0-60.560.43-0.670.4
0-120.570.45-0.690.3
0-240.590.48-0.710.2
0-360.580.46-0.700.2
0-480.610.49-0.730.09
0-52b0.640.53-0.760.02
0-600.620.50-0.740.06
0-720.580.46-0.700.2
  • a Null hypothesis: true area = 0.5.

  • b CART-derived breakpoint.