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Table 1: 
Characteristics of the patients (n = 4160)
CharacteristicsRadiation-Related Group (No.) (%)Control Group (No.) (%)P Value
Male24 (70.6)1730 (41.9).001
Age (mean) (yr)51.4 (SD, 15.0)58.2 (SD, 13.5).003
Hyperlipidemia3 (8.8)348 (8.4)NS
Hypertension15 (44.1)2187 (53.0)NS
Diabetes2 (5.9)281 (6.8)NS
Multiple aneurysms7 (20.6)470 (11.4)NS
Presented with SAH30 (88.2)2979 (72.2).037
  • Note:—NS indicates not significant.