Evolution of inequalities in the coronavirus pandemics in Portugal: an ecological study

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Abstract

BACKGROUND: Previous literature shows systematic differences in health according to socioeconomic status (SES). However, there is no clear evidence that the SARS-CoV-2 infection might be different across SES in Portugal. This work identifies the COVID-19 worst-affected municipalities at four different time points in Portugal measured by prevalence of cases, and seeks to determine if these worst-affected areas are associated with SES.

METHODS: The worst-affected areas were defined using the spatial scan statistic for the cumulative number of cases per municipality. The likelihood of being in a worst-affected area was then modelled using logistic regressions, as a function of area-based SES and health services supply. The analyses were repeated at four different time points of the COVID-19 pandemic: 1st of April, 1st of May, 1st of June, and 1st of July, corresponding to two moments before and during the confinement period and two moments thereafter.

RESULTS: Twenty municipalities were identified as worst-affected areas in all four time points, most in the coastal area in the Northern part of the country. The areas of lower unemployment were less likely to be a worst-affected area on the 1st of April [AOR = 0.36 (0.14; 0.91)], on the 1st of May [AOR = 0.03 (0.00; 0.41)], and on the 1st of July [AOR = 0.40 (0.16; 1.05)].

CONCLUSION: This study shows a relationship between being in a worst-affected area and unemployment. Governments and public health authorities should formulate measures and be prepared to protect the most vulnerable groups.

Original languageEnglish
Pages (from-to)1069-1075
JournalEuropean Journal of Public Health
Volume31
Issue number5
Early online date16 Mar 2021
DOIs
Publication statusPublished - 2021

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