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INTRODUCTION: WHO has set a goal to reduce the prevalence of stunted child growth by 40% by the year 2025. To reach this goal, it is imperative to establish the relative importance of risk factors for stunting to deliver appropriate interventions. Currently, most interventions take place in late infancy and early childhood. This study aimed to identify the most critical prenatal and postnatal determinants of linear growth 0-24 months and the risk factors for stunting at 2 years, and to identify subgroups with different growth trajectories and levels of stunting at 2 years. METHODS: Conditional inference tree-based methods were applied to the extensive Maternal and Infant Nutrition Interventions in Matlab trial database with 309 variables of 2723 children, their parents and living conditions, including socioeconomic, nutritional and other biological characteristics of the parents; maternal exposure to violence; household food security; breast and complementary feeding; and measurements of morbidity of the mothers during pregnancy and repeatedly of their children up to 24 months of age. Child anthropometry was measured monthly from birth to 12 months, thereafter quarterly to 24 months. RESULTS: Birth length and weight were the most critical factors for linear growth 0-24 months and stunting at 2 years, followed by maternal anthropometry and parental education. Conditions after birth, such as feeding practices and morbidity, were less strongly associated with linear growth trajectories and stunting at 2 years. CONCLUSION: The results of this study emphasise the benefit of interventions before conception and during pregnancy to reach a substantial reduction in stunting.

Low birthweight increases the risk of infant mortality, morbidity and poor development. Maternal nutrition and stress influence birth size, but their combined effect is not known. We hypothesised that an early-invitation time to start a prenatal food supplementation programme could reduce the negative influence of prenatal maternal stress on birth size, and that effect would differ by infant sex. A cohort of 1041 pregnant women, who had delivered an infant, June 2003–March 2004, was sampled from among 3267 in the randomised controlled trial, Maternal Infant Nutritional Interventions Matlab, conducted in Matlab, Bangladesh. At 8 weeks gestation, women were randomly assigned an invitation to start food supplements (2.5 MJ d−1; 6 days a week) either early (∼9 weeks gestation; early-invitation group) or at usual start time for the governmental programme (∼20 weeks gestation; usual-invitation group). Morning concentration of cortisol was measured from one saliva sample/woman at 28–32 weeks gestation to assess stress. Birth-size measurements for 90% of infants were collected within 4 days of birth. In a general linear model, there was an interaction between invitation time to start the food supplementation programme and cortisol with birthweight, length and head circumference of male infants, but not female infants. Among the usual-invitation group only, male infants whose mothers had higher prenatal cortisol weighed less than those whose mothers had lower prenatal cortisol. Prenatal food supplementation programmes that begin first trimester may support greater birth size of male infants despite high maternal stress where low birthweight is a public health concern.

BACKGROUND: Good maternal-infant interaction is essential for optimal infant growth, health, and development. Although micronutrient malnutrition has been associated with poorer interaction, the effects of maternal micronutrient supplementation on interaction are unknown. OBJECTIVES: We examined differences in maternal-infant feeding interaction between 3 maternal pre- and postpartum micronutrient supplementation groups that differed in iron dose and inclusion of multiple micronutrients and determined whether any differences observed were mediated by maternal distress. DESIGN: A cohort of 180 pregnant women was selected from 3300 women in the randomized controlled trial Maternal Infant Nutritional Interventions Matlab, which was conducted in Matlab, Bangladesh. At 8 wk of gestation, women were randomly assigned to 1 of 3 groups to receive a daily supplement of micronutrients (14 wk gestation to 12 wk postpartum): 60 or 30 mg Fe each with 400 microg folic acid or multiple micronutrients (MuMS; 30 mg Fe, 400 microg folic acid, and other micronutrients). A maternal-infant feeding interaction was observed in the home when infants were 3.4-4.0 mo of age, and maternal distress was assessed. RESULTS: Compared with 30 mg Fe, 60 mg Fe decreased the quality of maternal-infant feeding interaction by approximately 10%. Compared with 30 mg Fe, MuMS did not improve interaction but reduced maternal early postpartum distress. Distress did not mediate the effects of micronutrient supplementation on interaction. CONCLUSION: For pregnant and postpartum women, micronutrient supplementation should be based on both nutritional variables (eg, iron status) and functional outcomes (eg, maternal-infant interaction and maternal distress).

Non-PR, IFPRI1; Gender, FCND, This study explores the intrahousehold impact of transfer of modern agricultural technology from a gender perspective. The data suggest that group-based programs targeting women have a greater potential to address gender relations within the household and society than do programs targeting women as individuals. In male-dominated societies where women have limited access to internal or external support networks, programs targeting women as individuals that do not also provide alternative sources of support are bound to fail in their gender goals.

Non-PR, IFPRI1, FCND, This study attempts to identify characteristics of the existing child and the maternal care environment that could be used as a basis for designing policies and programs to improve the nutritional status of children. For the present study, all children between 6-18 months of age were selected from a nutrition survey of a cross section of 741 households conducted by the IFPRI Bangladesh Food Policy Project in February-March 1992. Information was obtained on feeding practices of infants and mothers, indicators of psychosocial care, and health and hygiene practices. In this study, information on child care practices obtained together with information from the original nutrition survey on maternal and child nutrition, individual food consumption, and household demographic and socioeconomic status was used. Children who exhibited the best growth status, holding age and income level constant, compared to the others in the same environmental setting, are identified as positive deviants. Those with the worst growth are categorized as negative deviants. Children falling in-between positive and negative deviants are labeled as median growers. Even though an increase in income was found to be associated with improving child nutrition, on average, this association was not very evident at the two tails of the nutrition status distribution, with household income of negative deviant children higher than for both the positive deviants and median growth children, implying a limited access or allocation of household income by mothers in these households, and the relevance of non-income factors. A selection of caring practices and indicators were identified for infant feeding, complementary feeding, maternal diet and health, psychosocial care, and health and hygiene practices.