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. 2021 Jun 4;11:11881. doi: 10.1038/s41598-021-90760-z

Table 1.

Demographic and clinical characteristics of patients with IAs at baseline.

Indicators RIAs (n = 105) UIAs (n = 185) p value
Age, year 56.30 ± 12.38 57.69 ± 11.21 0.332
Female, n (%) 65 (61.90) 130 (70.27) 0.145
Hypertension, n (%) 59 (56.19) 93 (50.27) 0.332
Smoking, n (%) 21 (20.00) 24 (12.97) 0.112
Diabetes mellitus, n (%) 8 (7.62) 30 (16.22) 0.037
Hyperlipidemia, n (%) 2 (1.90) 2 (1.08) 0.957
Alcohol use, n (%) 15 (14.29) 23 (12.43) 0.653
Aspirin use, n (%) 2 (1.90) 25 (13.51) 0.001
Heart disease, n (%) 10 (9.52) 18 (9.73) 0.954
Stroke, n (%) 18 (17.14) 25 (13.51) 0.403
Aneurysm location, n (%)* < 0.001
MCA 17 (16.19) 37 (20.00)
ICA 40 (38.10) 113 (61.08)
ACA 29 (27.62) 17 (9.19)
Posterior circulation 19 (18.10) 18 (9.73)
Aneurysm size, mm 6.12 ± 3.57 5.97 ± 4.00 0.736
Vitamin D, ng/mL 16.86 ± 9.167 19.28 ± 7.91 0.019
Ca, mmol/L 2.28 ± 0.10 2.28 ± 0.10 0.851
P, mmol/L 1.02 ± 0.25 2.01 ± 10.50 0.336
Season**, n (%) 0.229
Summer/autumn 42 (40.00) 61 (32.97)
Winter/spring 63 (60.00) 124 (67.03)

Bold: p < 0.05.

*MCA middle cerebral artery, ICA internal carotid artery, ACA anterior cerebral artery.

**The season of blood collection was defined as “summer/autumn” (December to May), “winter/spring” (June to November).