2017
DOI: 10.1590/1677-5449.001604
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Análise de sobrevivência em estudos clínicos e experimentais

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Cited by 10 publications
(13 citation statements)
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“…A hierarchical multivariate analysis was performed using the Cox regression technique. This method was used to derive the proportional hazard ratios (Hazard Ratio - HR) ( 25 ) , where the dependent variable was the time leading up to the event’s occurrence, and participants were represented as person-time ( 25 - 26 ) . For this study’s multivariate analysis, variables were categorized into two blocks, in line with previously proposed theoretical models ( 27 - 28 ) :…”
Section: Methodsmentioning
confidence: 99%
“…A hierarchical multivariate analysis was performed using the Cox regression technique. This method was used to derive the proportional hazard ratios (Hazard Ratio - HR) ( 25 ) , where the dependent variable was the time leading up to the event’s occurrence, and participants were represented as person-time ( 25 - 26 ) . For this study’s multivariate analysis, variables were categorized into two blocks, in line with previously proposed theoretical models ( 27 - 28 ) :…”
Section: Methodsmentioning
confidence: 99%
“…17 de controle. 18 Foram considerados momentos específicos para analisar a HR os dias de observação referentes à moda, à mediana e à média dos dados. Observou-se que os casos de óbitos por Covid-19 foram predominantes entre o sexo masculino e, entre a faixa etária de 60 anos ou mais, além de pessoas com comorbidades.…”
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“…Contudo, ao passo que se emprega a estatística para concluir quanto à diferença entre amostras, a maior variabilidade das medidas e a modesta diferença entre grupos comprometem o poder analítico (erro tipo II). Esse detalhe exige uma cuidadosa interpretação do p-valor (significância estatística) e da dimensão do efeito na inferência resultante de estudos de comparação entre grupos, apesar desses conceitos se aplicarem também a análises de correlação, concordância, sobrevivência, testes diagnósticos, entre outros [1][2][3][4][5] .…”
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“…This means it is imperative to interpret p -values (statistical significance) and effect sizes with great care when making inferences from the results of studies that make comparisons between groups, although these concepts are also applicable to analyses of correlation, agreement, survival, and diagnostic tests, among others. 1 - 5 …”
mentioning
confidence: 99%