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Table 1: Description of the patient population
ICA MCA AcomA/PcomA/Post Total
ICA Cavernous ICA AcomA PcomA Posterior Circulation
Age (years ± SD) 58 ± 12 59 ± 14 60 ± 10 58 ± 13 64 ± 11 61 ± 13 59 ± 13
No. of patients 
    Hypertension 21 40 18 23 11 25 138
    Smoking 22 44 10 25 6 17 124
    Earlier SAH 3 1 1 7 0 3 15
    IA multiplicity 10 41 6 3 1 4 65
Number of IAs 51 111 41 46 15 47 311
Total No. of patients (% of entire population) 40 (16%) 86 (34%) 31 (12%) 37 (15%) 12 (5%) 45 (18%) 251

	ICA		MCA	AcomA/PcomA/Post			Total
	ICA Cavernous	ICA	MCA	AcomA	PcomA	Posterior Circulation	Total
Age (years ± SD)	58 ± 12	59 ± 14	60 ± 10	58 ± 13	64 ± 11	61 ± 13	59 ± 13
No. of patients
Hypertension	21	40	18	23	11	25	138
Smoking	22	44	10	25	6	17	124
Earlier SAH	3	1	1	7	0	3	15
IA multiplicity	10	41	6	3	1	4	65
Number of IAs	51	111	41	46	15	47	311
Total No. of patients (% of entire population)	40 (16%)	86 (34%)	31 (12%)	37 (15%)	12 (5%)	45 (18%)	251