Figure 2. Difference in Successful First-Attempt Intubation Rate Between Patients Given Rocuronium vs Succinylcholine While Undergoing Out-of-Hospital Rapid Sequence Intubation .

The dashed line represents the noninferiority margin of 7%. Because the CI lines go above the prespecified noninferiority margin of 7%, the null hypothesis that succinylcholine is superior cannot be rejected.