Seminário

Extensions of the Cox model to analyse multiple time-to-event data

Sala 6.4.30, FCUL, Lisboa

Por Ivo Sousa-Ferreira (Faculdade de Ciências da Universidade de Lisboa).

Abstract: In longitudinal studies, it is very usual that a subject can experience several events, which can result from the occurrence of multiple-type events or the repetition of a single-type event (known as recurrent events). This kind of data arises in a wide variety of settings such as in biomedical studies on relapses of a certain disease.

Over the past four decades, several extensions of the Cox model have been suggested to analyse multiple time-to-event data. Some of the most applied models were proposed by: Prentice, Williams and Peterson (PWP); Andersen and Gill (AG); Wei, Lin e Weissfeld (WLW); and Lee, Wei and Amato (LWA).

The aim of this seminar is to carry out a brief, but careful, description of these four models. Moreover, another goal is to provide useful and practical guidelines to support the choice of the most appropriate model for each situation. Bearing this in mind, it will be illustrated how these models are implemented in R statistical software through the analysis of bladder cancer recurrences data available as a part of the survival package. The R code for fitting each model is also provided.

15h30
CEAUL - Centro de Estatística e Aplicações da Universidade de Lisboa

Speaker: Andrei Sipos (TU Darmstadt & Institute of Mathematics of the Romanian Academy).

Face à emergência da pandemia da COVID-19, a 6.ª edição da Escola de Verão de Energia da Faculdade de Ciências da ULisboa, prevista para 6 a 10 de julho de 2020, será adiada para data a definir em 2021.

CoastNet - Rede Portuguesa de Monitorização Costeira é uma infraestrutura de investigação MARE, que faz parte do Roteiro Nacional de Infraestruturas de Investigação de Interesse Estratégico (RNIE-FCT). Através do seu funcionamento est

Speaker: Elvira Zappale (Università Degli Studi di Salerno).

Cancelamento motivado pela aplicação do plano de contingência da Faculdade de Ciências da Universidade de Lisboa, na sequência das orientações da Direção-Geral de Saúde e das recomendações por parte da Reitoria da Universidade de Lisboa, relativamente ao novo Coronavírus (CO

Apresentações de Andreia Figueiredo (Ciências ULisboa) e Paula Silva (ICBAS.UPorto / Science & Wine).

Candidaturas a decorrer até ao dia 15 de julho de 2020.

IN3+  | Um Milhão para a Inovação.

O prémio IN3+ destina-se a todos os investigadores pertencentes às entidades que integram a Rede Inovação INCM.

Cancelamento motivado pela aplicação do plano de contingência da Faculdade de Ciências da Universidade de Lisboa, na sequência das orientações da Direção-Geral de Saúde e das recomendações por parte da Reitoria da Universidade de Lisboa, relativamente ao novo Coronavírus (COVID-1

Speaker: Gonçalo Tabuada (FCTUNL).

New date: September 14th-16th, 2020.

Ciências ULisboa associa-se ao maior evento mundial sobre inovação para a sustentabilidade - “The Planetiers World Gathering” - que terá lugar no Altice Arena entre 21 e 23 de outubro de 2020, sob os auspícios da

Programa de Formação Contínua de Professores do Ensino Básico (3.º ciclo) e Secundário, grupos 420 e 520.

Leitura e escrita são a base fundacional de todas as literacias e a condição primeira para o juízo compreensivo e crítico, o enriquecimento cultural, a formação estética e a memória individual e coletiva das sociedades.

Overview: Currently, climate changes or alterations are known to be reflected on the stable isotope ratios of Hydrogen, Nitrogen, Carbon, Oxygen and Sulphur present in atmospheric gas forms, fresh or ocean water, as well as in plants and animals and organi

Objectives: Evolutionary theory provides a framework for understanding all living systems.

Objectives: To introduce participants to the details of communicating science to non-specialized audiences, including, but not exclusive to, public and private stakeholders, students and teachers, and media professionals.

Objectives: Natural history museums are privileged spaces for seminal research on different subjects of biological sciences such as biodiversity, evolution, ecology, biogeography and taxonomy.

Objectives: Provide students with basic workflows, platforms and tools to increase reproducibility at all scientific levels.

Objectives: Under the general framework of Global Change Ecology, the goal of this course is to provide the participants with the most recent and practical knowledge on the use of Functional Diversity.

Objectives: The objective of this course is to introduce participants to the details of communication and writing scientific publications. The main emphasis is on the most common form, the “primary scientific paper”, but other forms will be covered.

Objectives: Lack of fertile land to feed the exponentially growing population, insufficient water availability and quality, changes in the flow of nutrients through the bio-geo-cycles (especially N and P) and climate and land use changes are impacting ecosystem

Objectives: Symbiosis is a key strategy for life on Earth.

Objectives: The goal of this course is to provide to the participants with current and practical knowledge on urban ecology, including ecological and social aspects. It aims at providing an integrated approach on urban socio-ecological systems.

Objectives: Citizen science can be part of the larger process of engaging people in new forms of interaction in scientific research, challenging scientists and citizens whilst enlarging scientific knowledge and providing learning opportunities for all part

New date: 30 August - 03 September 2021.

This conference is the 22nd in the series of triennial conferences which bring together the Particle and Nuclear Physics communities.