Germán Pérez Vázquez

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Questions related from Germán Pérez Vázquez

How do you manage ABO discrepancies working with Electronic/ Computer Crossmatch?

FDA 2011 guidance (I don't know what AABB last standards say about this) states "If ABO typing discrepancies exist, you should not rely on a computer crossmatch. This is particularly important if...

17 August 2021 1,213 5 View

What is the average recovery of CD34 positive cells with magnetic sorter CliniMACS Plus?

Median recovery of 52.3% (range 15.2–146.3%): These figures come from Bone Marrow Transplantation 25, 243–249 in the year 2000, so I guess improvements have been made. Does anyone have any more...

28 September 2013 7,034 2 View

How much plasma can be removed from whole blood?

Is there any formula or tables to predict the amount of plasma that can be removed using volume, hematocrit and the centrifugation settings? I give you an example, I'd like to know in advance how...

28 September 2013 8,294 10 View

What syntax do I need to use to perform a cox regression with time-varying covariates in Stata?

I want to analyze (with "stcox") the overall survival outcome of a prognostic factor (varX), adjusting by a time-varying covariate such as stem cell transplantation. I assume it has to make a...

28 August 2013 2,882 10 View

Which category is the unexposed one when examining confounding criteria?

When examining a possilbe confounding factor (Z) of the relationship of a 3-group categorical variable (X) (high-intermediate-low) with survival/relapse (Y) using the three classical criteria (KJ....

21 August 2013 9,431 1 View