South East Asian Nutrition Surveys (SEANUTS) II - a multi-country evaluation of nutrition and lifestyle indicators in children aged 12 years and below: rationale and design.

Objective: To assess the nutritional status, growth parameters and lifestyle behaviours of children between 0·5 and 12 years in nationally representative samples in Malaysia, Indonesia, Thailand and Vietnam.

Design: A cross-sectional study was conducted in the four countries, between May 2019 and April 2021. Data collected can be categorised into four categories: (1) Growth - anthropometry, body composition, development disorder, (2) nutrient intake and dietary habits - 24-h dietary recall, child food habits, breast-feeding and complementary feeding, (3) socio-economic status - food insecurity and child health status/environmental and (4) lifestyle behaviours - physical activity patterns, fitness, sunlight exposure, sleep patterns, body image and behavioural problems.

Prevalence and risk factors of functional gastrointestinal disorders in Vietnamese infants and young children.

Background: Functional gastrointestinal disorders (FGIDs) are common early in life. The prevalence of FGIDs varies among countries but is unknown in Vietnam. The aim of this study is to assess the prevalence of FGIDs in healthy Vietnamese infants and young children.

Prevalence of functional gastrointestinal disorders in infants and young children in China.

Background: The prevalence of functional gastrointestinal disorders (FGIDs) in children, particularly from Asia, is largely unknown. There are not many studies done in Asia especially using the Rome IV criteria. The aim of this study is to assess the prevalence of FGIDs in infants and young children in a representative sample in China.