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Table 1 Primary aims and study hypotheses

From: Grandi Byen—supporting child growth and development through integrated, responsive parenting, nutrition and hygiene: study protocol for a randomized controlled trial

Primary study aims

Hypotheses

1. To demonstrate the reproducibility and feasibility of egg-based interventions in reducing childhood stunting and test its impact on development

Hypothesis 1: Linear growth will be increased by 0.30 LAZ in children receiving one egg per day compared to standard care

Hypothesis 2: Children receiving the egg intervention will have better cognitive, motor and language development compared to standard care.

Exploratory Question 1: Does an egg-based intervention affect social-emotional development?

2. To investigate the incremental benefit of Grandi Byen compared to egg only and standard care groups on primary outcomes of child growth and development.

Hypothesis 3: Children of mothers/caregivers receiving Grandi Byen will increase linear growth by 0.10 LAZ compared to the egg intervention.

Hypothesis 4: Children of mothers/caregivers receiving Grandi Byen will have higher scores on child cognition, language, motor, and socio-emotional development, with an effect size of 0.36 on cognition, compared to standard care and egg nutrition groups.