Table 4.

Odds ratios and 95% confidence intervals for intracranial arterial stenosis (ICAS) in patients with different levels of stroke risk.

Different stroke risk population	Total (n = 3654)	Female (n = 2189)	Male (n = 1465)	<60 years (n = 2369)	⩾60 years (n = 1285)
Crude model
Low risk	Reference	Reference	Reference	Reference	Reference
Moderate risk	1.690 (1.243–2.297)	1.648 (1.110–2.467)	1.644 (1.019–2.651)	1.441 (0.975–2.132)	2.221 (1.279–3.855)
High risk	1.887 (1.500–2.374)	1.740 (1.287–2.353)	1.867 (1.299–2.683)	1.650 (1.255–2.169)	2.410 (1.515–3.832)
Adjusted model
Low risk	Reference*	Reference†	Reference†	Reference‡	Reference‡
Moderate risk	1.603 (1.171–2.195)	1.673 (1.116–2.508)	1.770 (1.088–2.879)	1.476 (0.993–2.193)	2.216 (1.269–3.867)
High risk	1.612 (1.272–2.042)	1.565 (1.150–2.129)	1.933 (1.336–2.795)	1.443 (1.091–1.907)	2.285 (1.432–3.646)

^*Adjusted for gender, age (years) and educational level.

^†Adjusted for age (years), residence and educational level.

^‡Adjusted for gender, education, residence and educational level.