372120_en-US

liliconcom

overlapping variables in a composite index

I have a data set of patients of which I have created a composite index of critical illness. This composite includes patients who died, who had ventilator requirement, who had septic shock , required dialysis et cetera (about total 16 categories all nominal yes/no).

Reviewer want to know how much of these categories contributed to the composite. There are a total 600 patients who met the criteria of critical illness based on my definition.

I can provide information like the number of patients who died (n=xx), ventilator (n=yy).. All of them would be in the composite.

The sum of all these patients would be more than 600 because all of them are overlapping with the other.

Is there a way to solve this and maybe create a graph or diagram showing the overlap . I'm thinking of the bubble plot but there might be another way of doing this.

 

Any help much appreciated

GraphicsRe: overlapping variables in a composite index

I'm not sure I fully understand your question so I am starting really simple, could you show number of unique patients with each condition?  In this example every patient was tested for every condition so the total is the same, thus I would remove the 'does not apply' bars.

 

 

 

This script will reproduce the graph above:

View more...