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. Author manuscript; available in PMC: 2009 Sep 28.
Published in final edited form as: Neurology. 2005 Oct 25;65(8):1227–1231. doi: 10.1212/01.wnl.0000180958.22678.91

Table 3.

Results from Cox proportional hazards model of time to conversion among normal patients (n=91).

HR (95% CI) P
Hippocampus APC 0.86 (0.5, 1.5) 0.7
ERC APC 1.12 (0.7, 1.9) 0.34
Whole brain APC 1.21 (0.7, 2.2) 0.27
Ventricle APC 1.88 (1.0, 3.6) 0.026

Note: There were 13 observed conversions among the normal cohort.

Follow-up starts with second scan.

HR = Hazard Ratio for a 1-standard deviation decrease in annual percent change in volume (except for ventricle estimate which is based on a 1-standard deviation increase).