Erratum

In the article entitled ‘‘Prenatal social support, postnatal social support, and postpartum depression’’ by Wen et al., in the September 2009 issue of Annals of Epidemiology (Volume 19, Number 9, pages 637-643), the first paragraph of the “Results” section should read as follows:

A total of 666 women were invited to participate in the study and 634 women agreed and completed the prenatal survey. At the 2-week postpartum survey, 24 women withdrew, 25 were lost to follow-up, and 10 had missing information in more than 20% of the variables. A further 41 women were excluded because of recorded major psychiatric disorders and obstetric and/or pregnancy complications, leaving 534 (84.2% of the consented women at 30–32 weeks of gestation) for analysis.