Volume 12, Number 7—July 2006
Dispatch
Smallpox during Pregnancy and Maternal Outcomes
Hiroshi Nishiura*†
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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