Figure 1. Distribution of Onset-to-Treatment Time for 482 Treated Participants in the Reducing Delays in Aneurysmal Subarachnoid Hemorrhage (SAH) Study.

Onset-to-treatment time is the time elapsed between symptoms onset and aneurysmal SAH treatment. A total of 295 participants had onset-to-treatment time delays of less than 24 hours, 99 had delays of 24 to 48 hours, and 80 had delays of greater than 48 hours (data were missing for 8 participants).