Do PICs represent an independent variable?
Yes. In fact, when the number of disease vessels is constant, PICs consistently predict a lower survival
rate. They do the same when PCWP is high (≥13 mmHg). Hence, the lower survival of PIC-positive
patients does not simply reflect an increased number of diseased vessels or a greater PCWP, but represents
instead an independent variable.
Yes. In fact, when the number of disease vessels is constant, PICs consistently predict a lower survival
rate. They do the same when PCWP is high (≥13 mmHg). Hence, the lower survival of PIC-positive
patients does not simply reflect an increased number of diseased vessels or a greater PCWP, but represents
instead an independent variable.