Modifying effects of wealth on the response to nutrient supplementation in pregnancy on birth weight, duration of gestation and perinatal mortality in rural western China: double-blind cluster randomized controlled trial

摘要

Background There have been few reports of differential responses to nutrition interventions in women and children from poor households. Women from poor households have greater nutritional risks and are potentially a target group for programmes. We assessed the modifying effects of household wealth on responses to micronutrient supplements in pregnancy on newborn anthropometry and perinatal mortality.