The Effects of Impeller Use on Mortality

There are four approaches to try and simulate the elegant and ultimate way of knowing things in medicine, that is you randomize cartogenic shock patients and count up outcome events. One approach tries to create a time zero standard because if you include devices placed later, it induces an immortal time bias issue. So let's see what happens with the variable adjusting techniques. Now, for the basic propensity matching of variables, impeller use associated with a 15%, absolute 15% higher absolute risk of death than nonuse. And these were very tight conference intervals. For the instrumental variable analysis, impeller Use associated with a 13% higher risk of death versus nonuse. These were a little bit wider conference intervals

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