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. Author manuscript; available in PMC: 2016 Jun 1.
Published in final edited form as: Neurobiol Aging. 2015 Feb 28;36(6):2122–2129. doi: 10.1016/j.neurobiolaging.2015.02.024

Table 3.

Effect of pre-surgical MRI indices of brain damage on postoperative delirium incidence

Relative Risk
(per cc unit change)		 95%-C.I. p-value
WMH Volume
Adjusted for ICV only 0.987 0.947 – 1.029 0.549
Fully adjusted model* 0.966 0.919 – 1.016 0.178
BPV
Adjusted for ICV only 0.997 0.992 – 1.002 0.251
Fully adjusted model* 0.997 0.992 – 1.003 0.367
Hippocampal Volume
Adjusted for ICV only 1.160 0.453 – 2.973 0.757
Fully adjusted model* 1.371 0.494 – 3.799 0.545

Generalized linear model with log link and Poisson error distribution.

*

The fully adjusted model includes the following covariates: ICV, age, gender, global cognitive performance and vascular comorbidity.

Abbreviations: BPV – Brain Parenchymal Volume; ICV – Intracranial Cavity Volume; WMH – White Matter Hyperintensities.