Body Pigmentation as a Risk Factor for the Formation of Intracranial Aneurysms
Table 4
Results of logistic regression in data combined from Samples I and II.
Explanatory variables
Patients (%)
Controls (%)
Adjusted odds ratio† (95% CI)
Samples I + II
111
174
Hair color
Dark brown to brown
24 (21.6)
85 (48.9)
1.0
0.001 (13.40)
Light brown to dark blond
43 (38.7)
74 (42.5)
2.84** (1.45–5.58)
Blond to strawberry blonde/red
44 (39.6)
15 (8.6)
10.82*** (4.71–24.87)
Eye color
Dark color
35 (31.5)
69 (39.7)
1.0
0.55 (0.20)
Mixed color
27 (24.3)
37 (21.3)
1.73 (0.85–3.56)
Light color
49 (44.1)
68 (39.1)
1.22 (0.66–2.25)
Odds ratios were adjusted for age, sex, and smoking ( values for these covariates were 0.001, 0.001, and 0.018, resp.); # for trend; explained variance (%) by the respective variable (Nagelkerke +); *significance for odds ratios: **, ***.
