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Parity and risk of death from subarachnoid hemorrhage in women: Evidence from a cohort in Taiwan

From the Institute of Public Health, College of Health Sciences (C.-Y.Y., C.-C.C., H.-W.K.), and Institute of Pharmacology, College of Medicine (H.-F.C.), Kaohsiung Medical University, Kaohsiung, Taiwan.

Address correspondence and reprint requests to Dr. Chun-Yuh Yang, Institute of Public Health, Kaohsiung Medical University, 100 Shih-Chuan 1st RD, Kaohsiung, Taiwan 80708; e-mail: chunyuh{at}kmu.edu.tw

The authors examined the relationship in women between age at first birth, parity, and subarachnoid hemorrhage mortality. They followed each woman from the time of her first birth and linked vital status with a mortality database. The risk was increased by 8% for each additional year of mother's age at first birth. The relative risk was 0.63 for women who had borne two children and 0.62 for women with three or more births.

This study was partly supported by a grant from the National Science Council, Executive Yuan, Taiwan (NSC-94-2314-B-037-056).

Disclosure: The authors report no conflicts of interest.

Received January 3, 2006. Accepted in final form March 28, 2006.