This is not, as far as my searching could reveal, on the ‘net, but is a shocking and important enough finding that I thought I’d post it:

Homicide a Leading Cause of Death in Pregnant Women :

The leading cause of death among pregnant women is homicide, according to a
study published in the current issue of the Journal of Midwifery and Women’s
Health.

The study’s authors reviewed 651 autopsy charts from the District of Columbia’s
Chief Medical Examiner’s Office for cases from 1988 until 1996. The researchers
discovered 13 homicides of pregnant women that had not been reported with the
21 maternal deaths from medical causes (eg, hemorrhage and infection). These 13
unreported deaths account for 38% of pregnancy-associated deaths…

Other findings include:

Pregnant homicide victims are more likely to have been killed early in the
pregnancy, which can make it difficult to identify the pregnancy and link it
with the homicide.

Pregnant homicide victims are more likely to be killed with a gun.

Pregnant teenagers (aged 15-19 years) were more at risk.

… “What pregnant women do not know,” said American College of Nurse-Midwives
Executive Director Deanne Williams, “is that instead of facing joyful
celebration at the announcement of pregnancy, too many face violence and death.
We have got to do a better job of identifying this problem and helping the
women and their partners not end up with such a horrific outcome.”

The authors note that the deaths in the study, although not officially reported
within maternal mortality ratios, may truly be pregnancy-related in that the
violence might not have escalated to result in death had the women not become
pregnant.

A reader provided me with a link to a related study published in the Journal of the American Medical Association.