Population-Based Health Survey in the municipality of São Paulo 2024: methodological and operational aspects

This paper presents the methodological procedures adopted for the construction and development of the population-based household health survey (ISA Capital-SP 2024), including its planning, sampling, and operational aspects for field feasibility. The data were collected using stratified probability sampling, with two-stage cluster sampling: at the census tract and household level. The strata were formed by the six health regions of the municipality of São Paulo (MSP). Individuals aged 10 or older living in permanent private households in the MSP's urban area were interviewed. The questionnaire consisted of 13 thematic blocks, including: reported morbidity, service use, preventive exams, immunization, medication use, and health behaviors. Health surveys contribute to studies of health trends and the identification of different patterns of health service use by the population, complementing data from official information systems. The ISA constitutes an important instrument for monitoring health conditions, planning, and formulating public policies at the municipal and intra-municipal levels, especially given the need to generate regional indicators for a city with the social and geographic inequalities of the MSP.