Questionnaire types and description of contents, SAGE Wave 1

Questionnaire type	Domain	Wave 1 measures
Household	Household identification, contact and sampling details	Identification and contact details; structure of household; dwelling characteristics; improved water, sanitation and cooking facilities
	Transfers and support networks	Family, community and government assistance into and out of the household; informal personal care provision/receipt
	Assets, income and expenditure	List of household assets; sources and amount of household income; improved household expenditure on food, goods and services, health care
	Household care and health insurance	Persons in household needing care; mandatory and voluntary health insurance coverage
Individual	Sociodemographic characteristics	Sex; age; marital status; education; ethnicity/background; religion; language spoken; area of residence; employment and education of parents; childhood residence, migration
	Work history and benefits	Length of time worked; reasons for not working; type of employment; mode of payment; hours worked; retirement
	Health states and descriptions	Overall self-rated health; eight self-rated health domains (affect, mobility, sleep/energy, cognition, interpersonal activities, vision, self-care and pain); 12-item WHO Disability Assessment Schedule, Version 2 (WHODAS-II); activities of daily living (ADLs); instrumental activities of daily living (IADLs); vignettes on health state descriptions
	Anthropometrics, performance tests and biomarkers	Measured blood pressure; self-report and measured height and weight; measured waist and hip circumference; timed walk; near- and distant vision tests; grip strength, executive functioning (verbal recall, digit span forwards and backwards, verbal fluency); spirometry; non-fasting fingerprick blood sample (stored at -20C) as dried blood spots
	Risk factors and preventive health behaviours	Smoking; alcohol consumption; fruit and vegetable intake; physical activity (GPAQ)
	Chronic conditions and health services coverage	Self-reported and symptomatic reporting of arthritis; stroke; angina (Rose Questionnaire); asthma; and, depression (ICD-10, DSM-IV). Self-reporting of diabetes; chronic lung disease; hypertension; cataracts; oral health (edentulism); injuries; cervical and breast cancer screening
	Health care utilization	Past need for health care; reasons for health care or for not receiving health care; inpatient and outpatient health care: number of admissions/visits within the past 3 years (inpatient) or 1 year (outpatient); reasons for admission/visit; details of hospital or provider; costs of hospitalization or health care visit; satisfaction with treatment; health system responsiveness; vignettes for responsiveness of health services
	Social cohesion	Community involvement and social networks; perceptions of other people and institutions; safety in local area; stress; interest in politics and perceptions of government
	Subjective well-being and quality of life	Perceptions about quality of life and well-being; 8-item WHO Quality of Life measure (WHOQoL); Day Reconstruction Method (DRM)
	Impact of caregiving	Household members needing care; type of care required; length of time spent on care; costs of care; impact of providing care on career well-being
Proxy	IQ Code	IQ Code;
	Health state descriptions	All measures described above for individual data
	Chronic conditions	All measures described above for individual data
	Health care utilization	All measures described above for individual data
Proxy validation	Quality control measure	Supervisor checks that proxy interview warranted and completed
Retest	Quality control measure	Selected key variables for household and individual questionnaires repeated up to one week after initial interview.
Mortality (verbal autopsy)	Deaths and cause of death	Verbal Autopsy for all deaths within past 24 months in households

Note: Section 9000 of the individual questionnaire allowed the interviewer to document observations during the interviews.