Interventions resulting in public infrastructure changes were found to be less effective than household-based interventions; however, both are important aspects of improved health outcomes for women (128, 130). Public water infrastructure requires regular maintenance and periodic replacement and water from these sources is often contaminated (130). However, even public water points that provide good-quality water have had minimal impacts on health outcomes (136). One review estimated that water-source interventions were associated with a 27% reduction in diarrhea risk at all ages, whereas household-based interventions were associated with a 43% reduction (128). This could be associated with bias and confounding, as measuring WASH outcomes is not a blinded process (128). The differential impact could also be related to practice. As compared with public water sources, home water connections were associated with greater odds of handwashing and fecal waste disposal (136). As a significant portion of diarrheal disease is a result of person-to-person transmission and poor hygiene, interventions that improve domestic hygiene behaviors can have a significant impact (136). Behavior change communication and resource provision, e.g., soap and point-of-use water treatment resources, were also important and sustainable aspects of WASH interventions (131, 137).
We conducted a comprehensive narrative review to synthesize the existing literature on interventions targeting women's nutrition (11). We searched the PubMed database and Google Scholar from 1990 to December 2017 for peer-reviewed articles, systematic reviews, and grey literature that reported on a set of nutrition-specific and nutrition-sensitive interventions, outlined in what follows. We also reviewed the cited sources of key articles. When available, we used existing reviews to identify studies. Some of the review articles that emerged from our search included both high-income countries and low- and middle-income countries. When possible, we specified the delivery platforms for low- and middle-income countries. For review articles that did not explicitly describe the intervention delivery platforms, we reviewed the cited primary sources to identify the delivery platform for the discussed interventions.