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Community health posts and home visits provided a platform to make health care services more accessible (109, 110, 124). Community-based platforms for the delivery of health services included community center and home visits from community health workers, mobile clinics, community support groups, mobile phones, and mass media campaigns (105, 110). Community-based services were effective in reducing maternal mortality and managing HIV (106). However, 1 review found that community-based interventions were only effective in reducing maternal morbidity and not mortality (107, 110). In high-income settings, community-based services were associated with hypertension and diabetes management, and cervical and breast cancer screening (106). We found no references for the use of community-based integrated care to address women's nutrition in low- and middle-income settings. It could be an effective way to reach older women and women of reproductive age who do not regularly engage with health centers. For children, community-based services were effective in improving health outcomes, particularly among the poorest wealth quintiles (13, 110). More research is needed on the potential of community-based services to reduce inequities in delivery of care to women in different settings and across different socioeconomic statuses.
Our findings identified gaps and limitations in the evaluation, scope, targeting, and delivery platforms of nutrition interventions in low- and middle-income countries. First, the monitoring and evaluation of nutrition programs that reported on women's nutrition outcomes was generally inadequate. Many of the studies we identified included small-scale efficacy trials. Although there were many large-scale programs that targeted women and adolescent girls with nutrition-specific and nutrition-sensitive approaches, they lacked rigorous evaluation. Whether the evidence about women's outcomes was limited because they are not systematically measured or because they are not well reported is not clear. Negative results are often not published, and many evaluations of nutrition interventions that are conducted by the same groups responsible for implementing them are typically presented positively. This may have also skewed our findings. More intentional research-quality program evaluation, including of large-scale programs, would provide a stronger evidence base. Of the studies identified in this review, many reported on short-term findings such as changes in knowledge, dietary behaviors, and program coverage. They were limited in their ability to report clinical and anthropometric outcomes for women, the duration of those outcomes, and the feasibility of scaling up programs. There is also a need for systematic, long-term evaluations of interventions whose effects on nutrition outcomes are more distal (e.g., nutrition education compared with micronutrient supplementation). The effects of multisectoral interventions are even more complex to measure. However, frameworks exist to evaluate complex interventions (102) and could be utilized to evaluate the impact of interventions across the life course.