Table 2.

Unadjusted Sample Means for MPI at Admission, MPI at Discharge, and Difference Between MPI at Discharge and MPI at Admission (Delta-MPI), According to MPI at Admission Grades

		MPI at admission
Variables, mean ± SD	All	MPI-low	MPI-intermediate	MPI-high
MPI at admission	0.564 ± 0.240	0.230 ± 0.080	0.503 ± 0.090	0.794 ± 0.081
MPI at discharge	0.561 ± 0.232	0.271 ± 0.127	0.498 ± 0.129	0.769 ± 0.104
Delta-MPI	−0.003 ± 0.101	0.041 ± 0.116	−0.006 ± 0.099	−0.026 ± 0.084