TABLE 2.

Correlation between visual rating of atrophy and volumetry at ages 75 and 80

	At 75 years	At 80 years
MTA average versus HC average	rs = −.42, p < .001	rs = −.49, p < .001
PA versus PL	rpb = .07, p = .316	rs = −.16, p = .02
F‐GCA versus FL	rpb = .03, p = .724	rpb = .19, p = .006

Abbreviations: F‐GCA, frontal lobe atrophy; FL, frontal lobe volumetry; HC, hippocampal volumetry; MTA, medial temporal lobe atrophy; PA, posterior atrophy; PL, parietal lobe volumetry; rpb, point‐biserial correlation coefficient; rs, Spearman's correlation coefficient.