Stella Glasmacher

5 Questions 8 Answers 0 Followers

Questions related from Stella Glasmacher

How can I convert a hazard ratio for 3 different categories to a hazard ratio for 2 different categories?

I am doing a meta-analysis of the validity of age as a prognostic factor. Different studies report different categories for age, making them difficult to combine. For example, if a study reports...

02 April 2016 621 1 View

What does it mean if studies report the relative risk calculated by a Cox model and can this be converted to a hazard ratio?

I am doing a meta-analysis on prognostic factors predicting survival and want to extract hazard ratios as the effect measure. Some (very good) studies have reported the "relative risk derived by a...

28 January 2016 3,232 17 View

How can I access statistical expertise for the implementation of a hierarchical or bivariate summary ROC curve?

As part of a Master's degree I conducted a diagnostic test accuracy meta-analysis on the ability of the anion gap to screen for hyperlactataemia. For the summary ROC curve, I used the...

28 September 2015 1,038 3 View

Can I pool correlation coefficients in RevMan and how would I enter them?

I am doing a meta-analysis on anion gap (a blood test) to detect high lactate levels. Many studies have reported correlation coefficients (r) and I would like to pool them in a meta-analysis. Can...

27 April 2015 323 8 View

Is pooling AUCs appropriate for a prognostic meta-analysis?

I am doing a prognostic meta-analysis to investigate whether anion gap (a biochemical marker) can predict short-term mortality in critically ill patients. While the effect measure I am mainly...

23 April 2015 2,707 3 View