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Studies consistently show a relationship between social disadvantage and low birthweight.
The objective of this review was to assess the effects of programs offering additional social support for pregnant women who are believed to be at risk for giving birth to preterm or low birthweight babies. The Cochrane Pregnancy and Childbirth Group trials register and the Cochrane Controlled Trials Register were searched. One reviewer assessed trial quality and extracted data. Study authors were contacted for additional information. The trials were generally of good to excellent quality, although three used a method likely to introduce bias.