Table 1

Italian Network of Longitudinal Metropolitan Studies data sources and available variables

	Data sources
	Population register	2001 census	Mortality register	Hospital discharge archive
Demographic information
Gender	√	√	√	√
Date of birth	√	√	√	√
Place of birth	√	√	√	√
Citizenship	√	√	√	√
Civil status	√	√
Date of immigration in the municipality	√
Date of emigration from the municipality	√
Socioeconomic characteristics
Educational level	√*	√		√
Occupational condition		√
Occupational class		√
Housing characteristics (ownership, dwelling structure and dimensions, sanitary equipment, heating system)†		√
Household overcrowding†		√
Health outcomes
Date of death	√		√
Cause of death			√
Date of hospital admission				√
Date of hospital discharge				√
Main diagnosis of hospital admission				√
Type of admission (inpatient or day-hospital)				√
Comorbidities				√

*Educational level from population registers is currently available in the cohorts of Turin, Venice, Reggio Emilia, Modena and Bologna.
†Information available only for non-institutionalised individuals.