Rural South and Southeast Asia Household Health Survey

371 households will be randomly selected from each site in Bangladesh, Cambodia, Myanmar, and Thailand. Assuming each household has an average of 4.5 members and all members will be sampled, 1500 participants will be recruited per site. This sample size allows for the overall prevalence estimation of key survey indicators with 95% confidence and 5% degree of precision.

The survey components include questionnaire interview, physical examination, blood sample collection, and point of care (PoC) tests. The questionnaire interview will collect information on household characteristics, members' disability, presence or history of disease, risk factors, self-perceived quality of life, and health seeking behaviour. For women, questions about reproductive health and antenatal care, and for young children, vaccination coverage and achievement of child development goals, will also be assessed.

For physical examinations, tympanic temperature, weight and height will be measured in all household members, mid-upper arm circumference in young children, and blood pressure in adults. Blood sample will be collected from all participants aged 6 months and above. Venous blood samples will be collected from participants aged 5 years and older, and dried blood spot will be collected from children under 5 years. Samples will be shipped to a central laboratory and analysed. Haemoglobin PoC will be administered to all participants.

All data will be collected directly on an electronic case report form using tablets, and uploaded to an electronic database.

Inclusion criteria

• All members of the selected households at the time of the survey; and able to provide informed consent.

Exclusion criteria

• Adults or children whose parent/guardian/ caretaker are unable or unwilling to provide informed consent.