(2008) AHRQ evidence-based review on outcomes of gestational weight gain that are related to the mother during pregnancy, at delivery, and postpartum periods. Studies were rated “good,” “fair,” or “poor” based on a scoring algorithm developed by the AHRQ study reviewers using previously published guidelines (Downs and Black, 1998; Deeks et al., 2003). The methodological approach and system of rating articles used in the AHRQ review is provided in Appendix E. Discussions in this chapter also include articles published since release of the AHRQ report in which associations between GWG and maternal outcomes were examined (see Appendix F for summary data tables).
The committee’s conceptual framework (see Chapter 1) illustrates a model for maternal and child outcomes consequent to GWG outside the ranges recommended by the IOM (1990) report (Figure 5-1). There are numerous potential causal factors, including environmental factors, that can influence the determinants of GWG and its consequences and others that may affect those consequences by other routes. These consequences,