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. 2023 Mar 3;58:101889. doi: 10.1016/j.eclinm.2023.101889

Table 2.

Posterior probabilities for stopping criteria by agent, action, and outcome: modified intention-to-treat population.

Outcome Action Criterion Arm Posterior probabilitya
Recovery (HR > 1 is better) Graduation Pr(HRr > 1.0 | data) ≥ 0.975 Apremilast 0.101
Cenicriviroc 0.225
Icatibant 0.163
IC14 0.017
Celecoxib/famotidine 0.011
Dornase 0.125
Futility Pr(HRr < 1.5 | data) ≥ 0.900 Apremilast 0.999
Cenicriviroc 0.998
Icatibant 1.000
IC14 1.000
Celecoxib/famotidine 1.000
Dornase 0.998
Death (HR < 1 is better) Graduation Pr(HRm < 1.0 | data) ≥ 0.900 Apremilast 0.428
Cenicriviroc 0.138
Icatibant 0.389
IC14 0.716
Celecoxib/famotidine 0.089
Dornase 0.383
Futility Pr(HRm < 1.0 | data) ≤ 0.500 Apremilast 0.428
Cenicriviroc 0.138
Icatibant 0.389
IC14 0.716
Celecoxib/famotidine 0.089
Dornase 0.383

Bold posterior probability indicates criterion was met.

Abbreviations: Hazard ratios (HR) as follows: HRr (recovery, in which values >1 indicate better outcomes, i.e., higher instantaneous recovery rate), HRm (mortality, in which values <1 indicate better outcomes, i.e., longer time to death), Pr (probability).

a

The posterior probability column shows the probabilities Pr(HRr > 1.0 | data), Pr(HRr < 1.5 | data), and Pr(HRm < 1.0 | data) (i.e., the corresponding probabilities after having observed the data in the trial and given the priors and the model, as specified in the SAP). Since the same posterior probability, Pr(HRm < 1.0 | data), is used in both the graduation and the futility criteria for death, its numerical value is the same for all agents in the rows corresponding to the graduation and the futility criteria (e.g., 0.716 for IC14). This probability is however compared to different thresholds in the graduation and futility criteria (≥0.9 for graduation and ≤0.5 for futility).