Strengthening health services to deliver nutrition education to promote complementary feeding and healthy growth of infants and young children: formative research for a successful intervention in peri-urban Trujillo, Peru.

Formative research is critical for developing effective nutrition-specific interventions to improve infant and young child (IYC) feeding practices and promote healthy growth. Health workers interact with caregivers during health facility visits, yet there is limited research about how to optimize delivery of such interventions during these visits. The extensive reach of IYC health services globally calls for research to address this gap. In Trujillo, Peru, formative research was conducted to explore complementary feeding practices with caregivers as well as health worker routines and interactions with caregivers related to feeding and healthy growth; results informed the development and delivery of an educational intervention. Multiple qualitative methods were used to collect data on a purposive sample of health workers and caregivers from three health facilities and communities: household trials followed. Complementary feeding messages with doable behaviours were developed, and three were selected as key to promote based on their nutritional impact and cultural acceptability. In the health facilities, medical consultation, well-child visits and nutrition consultation all dealt with aspects of IYC nutrition/growth during their interactions with caregivers but were independent and inconsistent in approach. A nutrition education strategy was developed based on consistency, quality and coverage in the IYC health services. We conclude that formative research undertaken in the community and IYC health services was critical to developing a successful and culturally relevant intervention to promote optimal complementary feeding practices and healthy growth during interactions between health workers and caregivers at routine health facility visits. © 2016 John Wiley & Sons Ltd.

Implementation examined in a health center-delivered, educational intervention that improved infant growth in Trujillo, Peru: successes and challenges.

Process evaluation was used to examine the implementation of a randomized, controlled trial of an education intervention that improved infant growth in Trujillo, Peru. Health personnel delivered the multi-component intervention as part of usual care in the government health centers. Quantitative and qualitative methods were used to examine process indicators, which included the extent of delivery (dose), fidelity to intervention protocol, barriers to implementation and context. Results demonstrated that most intervention components were delivered at a level of 50-90% of expectations. Fidelity to intervention protocol, where measured, was lower (28-70% of expectations). However, when compared with existing nutrition education, as represented by the control centers, significant improvements were demonstrated. This included both improved delivery of existing educational activities as well as delivery of new intervention components to strengthen overall nutrition education. Barriers to, and facilitators of, implementation were explored with health personnel and helped to explain results. This study demonstrates the importance of examining actual versus planned implementation in order to improve our understanding of how interventions succeed. The information gained from this study will inform future evaluation designs, and lead to the development and implementation of more effective intervention programs for child health.

Process evaluation determines the pathway of success for a health center-delivered, nutrition education intervention for infants in Trujillo, Peru.

Process evaluation was used to explain the success of a randomized, controlled trial of an educational intervention to improve the feeding behaviors of caregivers and the nutritional status of infants in Trujillo, Peru. Health personnel delivered a multicomponent intervention within the environment of usual care at government health centers. We created a model of the expected intervention pathway to successful outcomes. Process data were then collected on health center implementation of the intervention and caregiver reception to it. Using multivariate models, we found that variables of health center implementation, caregiver exposure, and caregiver message recall were all significant determinants in the pathway leading to improved feeding behaviors. These outcomes were consistent with our original intervention model. Further support for our model arose from the differences in caregiver reception between intervention and control centers. Process data allowed us to characterize the pathway through which an effective nutrition intervention operated. This study underscores the importance of including process evaluation, which will lead to the development and implementation of more effective nutrition interventions.

Effectiveness of an educational intervention delivered through the health services to improve nutrition in young children: a cluster-randomised controlled trial.

BACKGROUND: Malnutrition is the underlying cause of half of child mortality. Many programmes attempt to remedy this issue but there is a lack of evidence on effective ways to decrease child malnutrition. METHODS: We did a cluster-randomised trial of an educational intervention in a poor periurban area (ie, shanty town) of Peru. Guided by formative research, the intervention aimed to enhance the quality and coverage of existing nutrition education and to introduce an accreditation system in six government health facilities compared with six control facilities. The primary outcome measure was growth that was measured by weight, length, and Z scores for weight-for-age and length-for-age at age 18 months. Main secondary outcomes were the percentage of children receiving recommended feeding practices and the 24-h dietary intake of energy, iron, and zinc from complementary food at ages 6, 9, 12, and 18 months. Analysis was by intention to treat. FINDINGS: We enrolled a birth cohort of 187 infants from the catchment areas of intervention centres and 190 from control areas. Caregivers in intervention areas were more likely to report receiving nutrition advice from the health service than were caregivers in control health facilities (16 [52%] of 31 vs 9 [24%] of 37, p=0.02). At 6 months more babies in intervention areas were fed nutrient-dense thick foods at lunch (a recommended complementary feeding practice) than were controls (48 [31%] of 157 vs 29 [20%] of 147; difference between groups 19 [11%], p=0.03). Fewer children in intervention areas failed to meet dietary requirements for energy (8 months: 30 [18%] of 170 vs 45 [27%] of 167, p=0.04; 12 months: 64 [38%] of 168 vs 82 [49%] of 167, p=0.043), iron (8 months: 155 [91%] of 170 vs 161 [96%] of 167, 9 months: 152 [93%] of 163 vs 165 [99%] of 166, p=0.047), and zinc (9 months: 125 [77%] of 163 vs 145 [87%] of 166, p=0.012) than did controls. Children in control areas were more likely to have stunted growth (ie, length for age less than 2 SD below the reference population median) at 18 months than children in intervention groups (26 [16%] of 165 vs 8 [5%] of 171; adjusted odds ratio 3.04 [95% CI 1.21-7.64]). Adjusted mean changes in weight gain, length gain, and Z scores were all significantly better in the intervention area than in the control area. INTERPRETATION: Improvement of nutrition education delivered through health services can decrease the prevalence of stunted growth in childhood in areas where access to food is not a limiting factor.