26 documents found, page 1 of 3
Time-dependent decay of detectable antibodies against SARS-CoV-2: A comparison ...
Silveira,Mariangela F; Mesenburg,Marilia A; Dellagostin,Odir A; Oliveira,Natasha R de; Maia,Mara AC; Santos,Francisco D; Vale,André; Menezes,Ana M BABSTRACT Background: Large-scale epidemiological studies of seroprevalence of antibodies against SARS-CoV-2 often rely on point-of-care tests that provide immediate results to participants. Yet, little is known on how long rapid tests remain positive after the COVID-19 episode, or how much variability exists across different brands and even among batches of the same test. Methods: In November 2020, we assessed ...
COVID-19 and social distancing among children and adolescents in Brazil
Barros,Fernando C; Hartwig,Fernando P; Barros,Aluísio J D; Menezes,Ana M B; Horta,Bernardo L; Struchiner,Cláudio J; Vidaletti,Luis PauloABSTRACT OBJECTIVE To estimate the prevalence of SARS-CoV-2 antibodies and the adherence to measures of social distancing in children and adolescents studied in three national surveys conducted in Brazil between May–June 2020. METHODS Three national serological surveys were conducted in 133 sentinel cities located in all 27 Federative Units. Multistage probability sampling was used to select 250 individuals per...
Population-level seropositivity trend for SARS-Cov-2 in Rio Grande do Sul, Brazil
Barros,Aluísio J D; Victora,Cesar G; Menezes,Ana M B; Horta,Bernardo L; Barros,Fernando C; Hartwig,Fernando P; Victora,Gabriel D; Vidaletti,Luis PauloABSTRACT OBJECTIVE To describe the evolution of seropositivity in the State of Rio Grande do Sul, Brazil, through 10 consecutive surveys conducted between April 2020 and April 2021. METHODS Nine cities covering all regions of the State were studied, 500 households in each city. One resident in each household was randomly selected for testing. In survey rounds 1–8 we used the rapid WONDFO SARS-CoV-2 Antibody Tes...
Evolução da prevalência de infecção por COVID-19 no Rio Grande do Sul, Brasil: ...
Hallal,Pedro Curi; Horta,Bernardo L; Barros,Aluísio J D; Dellagostin,Odir A; Hartwig,Fernando P; Pellanda,Lúcia C; Struchiner,Cláudio JoséResumo A COVID-19 é uma doença produzida pelo vírus SARS-CoV-2. Esse vírus se espalhou rapidamente pelo mundo, o que levou a Organização Mundial da Saúde a classificar a COVID-19 como uma emergência de saúde internacional e, posteriormente, a declará-la uma pandemia. O número de casos confirmados, no dia 11 de abril de 2020, já passa de 1.700.000, porém esses dados não refletem a real prevalência de COVID-19 na...
Social distancing patterns in nine municipalities of Rio Grande do Sul, Brazil:...
Barros,Aluisio J D; Victora,Cesar G; Menezes,Ana M B; Horta,Bernardo L; Hartwig,Fernando; Victora,Gabriel; Pellanda,Lúcia C; Dellagostin,Odir AABSTRACT OBJECTIVE To describe social distancing practices in nine municipalities of the state of Rio Grande do Sul, Brazil, stratified by gender, age, and educational attainment. METHODS Two sequential cross-sectional studies were conducted in the municipalities of Canoas, Caxias do Sul, Ijuí, Passo Fundo, Pelotas, Porto Alegre, Santa Cruz do Sul, Santa Maria, and Uruguaiana to estimate the population prevalen...
Impact of stressful life events on central adiposity in the Pelotas Birth Cohort
Surkan,Pamela J; Sakyi,Kwame S; Hu,Alice; Olinto,Maria T; Gonçalves,Helen; Horta,Bernardo L; Gigante,Denise PABSTRACT OBJECTIVE: To investigate how stressful life events and social support relate to central adiposity in Southern Brazil. METHODS: Data included information from 802 participants in the 1982 Pelotas Birth Cohort that was collect in 2004-2005 and 2006. Stratifying by sex, we studied self-reported stressful life events during the year before 2004-2005 in relation to change in waist circumference between 200...
Consumption of ultra-processed foods and their impact on the diet of young adults
Bielemann,Renata M; Motta,Janaína V Santos; Minten,Gicele C; Horta,Bernardo L; Gigante,Denise POBJECTIVE To evaluate the consumption of ultra-processed foods, its associated factors, and its influence on nutrient intake in young adults.METHODS In 2004-2005, the individuals belonging to the Pelotas birth cohort of 1982 were identified for a home interview. A total of 4,297 individuals were interviewed and 4,202 individuals were included in the study (follow-up rate of 77.4%). Diet was assessed using a que...
Prevalência de nascimentos pré-termo por peso ao nascer: revisão sistemática
Silveira,Mariângela F; Matijasevich,Alicia; Horta,Bernardo L; Bettiol,Heloisa; Barbieri,Marco Antônio; Silva,Antonio A; Rondó,Patricia H COBJETIVO Estimar a prevalência de nascimentos pré-termo por faixas de peso ao nascer e obter uma equação para correção de estimativas. MÉTODOS Revisão sistemática da literatura nacional, de 1990 a 2012, para identificar estudos com coleta primária de informações sobre peso ao nascer e idade gestacional. Foram selecionados 12 que contribuíram com tabulações da prevalência de nascimentos pré-termo para faixas de ...
Dyspepsia: Differences on quality of life and gender
Souza,Luciano D M; Tavares,Daniele C; Lima,Carolina C; Moraes,Inácia G S; Horta,Bernardo L; Pinheiro,Ricardo T; Silva,Ricardo AThis study aimed to assess the quality of life in patients with organic (n=223) and functional (n=125) dyspepsia. Present data was based on baseline of a randomized clinical trial. Medical Outcomes Survey Shortsform 36 was used to assess quality of life. A Chisquare test was used to compare the proportions of dyspepsia. A t test was used in the comparisons of mean quality of life. Significant differences were o...
Metodologia do estudo da coorte de nascimentos de 1982 a 2004-5, Pelotas, RS
Barros,Fernando C; Victora,Cesar G; Horta,Bernardo L; Gigante,Denise POBJETIVO: Descrever os métodos utilizados no estudo longitudinal e acompanhamento das crianças nascidas em Pelotas (RS) em 1982. MÉTODOS: A coorte foi iniciada com um inquérito de saúde perinatal de todas as 6.011 crianças nascidas nas maternidades de Pelotas em 1982. As 5.914 crianças nascidas vivas foram incluídas nos estudos de acompanhamento. Até 2004-5 foram realizados oito acompanhamentos, com a aplicação...