Baseline results
ruptured aneurysm, aneurysm, aneurysms
RECRUITMENT, RUPTURED ANEURYSM, ANEURYSM, ANEURYSMS
Three hundred and fifty patients were recruited into the CATCH trial between April 2017 and October 2017 under randomization. Recruitment was stopped after the target number of patients had been recruited. The data of 140 patients whose aneurysms were smaller than 5 mm were extracted from the CATCH trial. The 140 patients formed the full analysis set (FAS) and underwent the treatments of interest. Due to the small size of the aneurysm sac in one ruptured aneurysm case, investigators failed to deliver coils into the sac. Among the 140 treated patients, 14 withdrew from the study without reason, non-conformance of one subjects with inclusion and exclusion criteria, and non-usage of coils in one subjects according to their random allocation. The remaining 124 patients formed the per-protocol set (PPS). The baseline characteristics of the patients and the aneurysms are shown in Table 
Baseline characteristics of the per-protocol setData are No. (%), mean (SD), or median (interquartile range)