[Epidemiological characteristics of depressed Mexican pregnant women]

To estimate the prevalence of depression in pregnant women, the epidemiological characteristics and associated factors.

A cross-comparison, with a sample of 220 pregnant women between 18 and 32 weeks gestation. We excluded patients with depression six months before the current pregnancy.

Depressed women were 6.4 %, mean age 26 years and 21.4 % were adolescent. The majority women were high school students (50 %); 71.4 % belong to a low medium socioeconomic status; 21.4 % were without a partner; 35.7 % had depression history in the family and 28.6 % had a history of prior antidepressant treatment.

The prevalence of depression in Mexican pregnant women was low. Risk factors associated to depression were young age, low socio-economical status, a lack of a partner, a history of depression in the family.