Incidence and risks of subarachnoid hemorrhage in China

Jing-Fen Zhang, Guorong Liu, Hisatomi Arima, Yue Li, Guo Juan Cheng, Ivy Shiue, Lin Lv, Hui Ling Wang, Chun Yang Zhang, Jian Chun Chun, Craig Anderson

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)


    Background and Purpose-To determine incidence and risks of subarachnoid hemorrhage in China. Methods-A prospective, population-based, 1:2 matched case-control study in Baotou, Inner Mongolia (≈2 million population) in 2009-2011. Multiple variable models used to determine relative risk and population-attributable risks for exposures. Results-For a total of 226 patients (mean age, 59 years; 65% women; 434 controls), crude annual incidence (per 100 000) of subarachnoid hemorrhage was 6.2 (95% confidence intervals, 5.4-7.0); 4.3 (3.3-5.2) for men and 8.2 (6.9-9.6) for women. Compared with nonsmokers, adjusted relative risk of subarachnoid hemorrhage in current smokers was 2.31 (95% confidence interval, 1.31-4.09) but was 4.00 (1.62-9.89) in women. Population-attributable risk for smoking, hypertension, and low income were 18%, 36% and 59%, respectively. Conclusions-The incidence of subarachnoid hemorrhage in China is slightly lower than in Western countries and is related to smoking, hypertension, and poor socioeconomic status.

    Original languageEnglish
    Pages (from-to)2891-2893
    Number of pages3
    Issue number10
    Publication statusPublished - Oct 2013


    • China
    • Epidemiology
    • Hypertension
    • Incidence
    • Risk factors
    • Subarachnoid hemorrhage


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