Table 3.

Estimated Adjusted Means for Multidimensional Prognostic Index Score from Multivariable Longitudinal Linear Model and Pairwise Comparisons

	Length of stay categories	Adjusted means (SE)	p-Valuea
MPI adjusted means
Overall	Baseline	0.508 (0.005)	<0.001
	1–6 days	0.497 (0.006)
	7–13 days	0.510 (0.006)
	>13 days	0.554 (0.008)
MPI-low grade	Baseline	0.239 (0.008)	<0.001
	1–6 days	0.261 (0.010)
	7–13 days	0.288 (0.010)
	>13 days	0.349 (0.018)
MPI-intermediate	Baseline	0.502 (0.007)	<0.001
	1–6 days	0.471 (0.009)
	7–13 days	0.499 (0.008)
	>13 days	0.548 (0.012)
MPI-high	Baseline	0.783 (0.006)	<0.001
	1–6 days	0.758 (0.009)
	7–13 days	0.741 (0.008)
	>13 days	0.765 (0.010)
Pairwise comparisons
Overall	1–6 days vs. Baseline	−0.011 (0.004)	0.024
	7–13 days vs. Baseline	0.002 (0.005)	0.739
	>13 days vs. Baseline	0.046 (0.008)	<0.001
MPI-low	1–6 days vs. Baseline	0.023 (0.008)	0.024
	7–13 days vs. Baseline	0.050 (0.010)	<0.001
	>13 days vs. Baseline	0.110 (0.018)	<0.001
MPI-intermediate	1–6 days vs. Baseline	−0.031 (0.007)	<0.001
	7–13 days vs. Baseline	−0.003 (0.008)	0.739
	>13 days vs. Baseline	0.047 (0.013)	0.002
MPI-high	1–6 days vs. Baseline	−0.025 (0.007)	0.001
	7–13 days vs. Baseline	−0.042 (0.007)	<0.001
	>13 days vs. Baseline	−0.018 (0.010)	0.282

Multivariable longitudinal model included MPI at admission grades, length of stay (tertiles), age, sex, heart failure, arrhythmia, pneumonia, COPD, respiratory failure, dementia, and acute or chronic kidney disease.

^ap-Values for pairwise comparisons were adjusted following Hochberg's method.

COPD, chronic obstructive pulmonary disease.