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Volume 12, Number 7—July 2006

Dispatch

Smallpox during Pregnancy and Maternal Outcomes

Hiroshi Nishiura*†Comments to Author 
Author affiliation: *University of Tübingen, Tübingen, Germany; †Hiroshima University, Hiroshima, Japan

Main Article

Table A3

Comparison of the frequency of deaths among pregnant and nonpregnant patients, according to data from 19th- and early 20th-century outbreaks*

Reference Nonpregnant
Pregnant


Cases Deaths Cases Deaths p value* OR (95% CI)†
Meyer (1), 1868–1872 1116 163 76 23 <0.01 2.5 (1.5–4.3)
van der Willigen (3), 1893–1894 352 39 80 12 0.33 1.4 (0.7–2.8)
Rao (6), 1959–1962 348 29 94 26 <0.01 4.2 (2.3–7.6)

*2-sided.
†OR, odds ratio; CI, confidence interval.

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