Pedro Emmanuel Alvarenga Americano do Brasil

4 Questions 21 Answers 0 Followers

Questions related from Pedro Emmanuel Alvarenga Americano do Brasil

Does the bivariate model eliminate heterogeneity of the summary estimates of diagnostic test accuracy meta-analysis?

Hello all, Im conducting a meta-analysis of diagnostic tests. At some point I decided to create groups for this meta-analysis defined by the trademark and tests names. However some groups have as...

01 June 2015 2,038 14 View

How can I conduct longitudinal data analysis with two observations per patient per time?

I'm dealing with a problem which I had never thought about, so I am little uncomfortable choosing a solution by myself. I have data for cerebral arteries peak speed for a week after stroke. The...

23 May 2014 5,940 6 View

How to use QUADAS2 to evaluate the original DTA research with latent class analysis?

I am conducting a systematic review of a diagnostic test and some of the original research using latent class analysis as the "reference test". When using QUADAS2 as the tool for risk of bias...

21 January 2014 3,738 1 View

How to estimate reasonable sample size for prediction model validation?

Recently a collaborator came with a project which aims to validate at his setting some prediction models for digestive bleeding. They are the rockall score, glsagow blatchford score, AIMS65 score,...

30 October 2012 1,759 12 View