Table 2.

Questionnaire sections, respondents and purpose of each section

Questionnaire section	Respondent (aged ≥18 years)	Purpose	Topics covered and source of questions
Household questionnaire	Household head/most knowledgeable about household	To estimate sociodemographic characteristics, number of injuries per household, household migration patterns and social capital. To compare measures of wealth/poverty/slum/non-slum household. To identify those injured in last 6 months for individual injury questionnaire.	Sociodemographic characteristics of household members: age, gender, education level, caste/religion/ethnicity, occupation.1 Household members with a disability79 and all those injured in the last 6 months.25 Household assets.1 Slum/non-slum household definition.80 Progress out of poverty index questions.42 Consumption.43 Income (tailor made—building on qualitative findings). Migration.81 Social capital.80
Individual questionnaire	Randomly selected from all household members using the Kish method82 83	To estimate the prevalence of depression (Kathmandu only). To assess the acceptability of PHQ9 and somatic questions. To assess level of agreement between PHQ9 scores and somatic symptoms. To explore associations between mobile phone ownership, migration and social capital.	PHQ9 (Patient Health Questionnaire 9).48–50 84–86 Somatic symptoms of mental ill-health (developed by national mental health experts in each country). Affect questions from Washington Group Extended Set (Hanoi and Dhaka only).79 Migration.81 Social capital.80
Individual questionnaire	All those injured in the last 6 months and those died in last 1 year	To estimate the prevalence of injuries (Kathmandu only). To assess the acceptability of a short set of injury questions.	Cause, nature and impact of injury, including injury-related death.25 62
Sample area observation form	Two members of the research team, independently, after completion of household survey in a cluster	To compare a simple subjective categorisation of ‘slumness’ with a list of key slum characteristics. To assess the level of agreement between the two researchers.	Simple ‘slumness’ categorisation of the sampling area: (i) non-slum, (ii) slum, (iii) mixed, (iv) distinct slum and non-slum. Characteristics of slums: 17 questions on social and environmental risks, eg, built on undesirable land due to slope, flood zone, crime. Lack of facilities/infrastructure eg, absence of services, eg, health, education, clean fuels and technologies, transportation. Unplanned and disorganised settlement eg, nature of roads and buildings. Contamination, eg, extent of garbage/waste, open defecation and air, land and water pollution.80