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Volume 27, Number 8—August 2021

Social Distancing, Mask Use, and Transmission of Severe Acute Respiratory Syndrome Coronavirus 2, Brazil, April–June 2020

Marcelo Rodrigues GonçalvesComments to Author , Rodrigo Citton Padilha dos Reis, Rodrigo Pedroso Tólio, Lucia Campos Pellanda, Maria Inês Schmidt, Natan Katz, Sotero Serrate Mengue, Pedro C. Hallal, Bernardo L. Horta, Mariangela Freitas Silveira, Roberto Nunes Umpierre, Cynthia Goulart Bastos-Molina, Rodolfo Souza da Silva, and Bruce B. Duncan
Author affiliations: Universidade Federal do Rio Grande do Sul, Porto Alegre, Brazil (M.R. Gonçalves, R.C.P. Reis, R.P. Tólio, M.I. Schmidt, N. Katz, S.S. Mengue, R.N. Umpierre, C.G. Bastos-Molina, R.S. da Silva, B.B. Duncan); Hospital de Clínicas de Porto Alegre, Porto Alegre (M.R. Gonçalves, M.I. Schmidt, R.N. Umpierre, C.G. Bastos-Molina, R.S. da Silva, B.B. Duncan); Universidade Federal de Ciências da Saúde de Porto Alegre, Porto Alegre (L.C. Pellanda); Municipal Health Department, Porto Alegre (N. Katz); Universidade Federal de Pelotas, Pelotas, Brazil (P.C. Hallal, B.L. Horta, M.F. Silveira); Universidade do Vale dos Sinos (UNISINOS), São Leopoldo, Brazil (C.G. Bastos-Molina)

Main Article

Table 4

Association of mask use with severe acute respiratory syndrome coronavirus 2 infection, Porto Alegre, Brazil, April–June 2020

Sample Odds ratio (95% CI)
Model 1* Model 2† Model 3‡
All, n = 693 0.12 (0.04–0.30) 0.10 (0.03–0.25) 0.10 (0.03–0.25)
Restricted sample, n = 618§ 0.16 (0.05–0.42) 0.12 (0.04–0.35) 0.13 (0.04–0.36)
Restricted sample, proxies removed, n = 609¶ 0.16 (0.05–0.44) 0.12 (0.03–0.34) 0.12 (0.04–0.35)

*Crude model. †Model 1 with addition of sex, age, educational attainment, race, income, and household size. ‡Model 2 with addition of social distancing score. §Excluding those who stated that they stay at home all the time. ¶Excluding proxy responses.

Main Article

Page created: May 19, 2021
Page updated: July 18, 2021
Page reviewed: July 18, 2021
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