Document Type


Publication Date



School of Medicine


Obstetrics and Gynecology


Objective To test whether there is an association between abortion legislation and maternal mortality outcomes after controlling for other factors thought to influence maternal health.

Design Population-based natural experiment.

Setting and data sources Official maternal mortality data from 32 federal states of Mexico between 2002 and 2011.

Main outcomes Maternal mortality ratio (MMR), MMR with any abortive outcome (MMRAO) and induced abortion mortality ratio (iAMR).

Independent variables Abortion legislation grouped as less (n=18) or more permissive (n=14); constitutional amendment protecting the unborn (n=17); skilled attendance at birth; all-abortion hospitalisation ratio; low birth weight rate; contraceptive use; total fertility rates (TFR); clean water; sanitation; female literacy rate and intimate-partner violence.

Source Citation

Koch E, Chireau M, Pliego F, et al Abortion legislation, maternal healthcare, fertility, female literacy, sanitation, violence against women and maternal deaths: a natural experiment in 32 Mexican states BMJ Open 2015;5:e006013. doi: 10.1136/bmjopen-2014-006013



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