. Author manuscript; available in PMC: 2024 Feb 1.

Published in final edited form as: Neuropsychology. 2022 Jul 21;37(4):436–449. doi: 10.1037/neu0000833

Table 4.

Correlations of zPACC and lPACC at the Baseline Within Each Cohort Reported Using Pearson’s Correlation Coefficients and t-Test Effect Size Statistics

		ADNI		HABS		AIBL		A4
Variable	Estimate	zPACC	lPACC	zPACC	lPACC	zPACC	lPACC	zPACC	lPACC
	r	0.96^*		0.83^*		0.77^*		0.81^*
Education	r	0.27^*	0.27^*	0.18^**	0.15^***	0.29^*	0.18^*	0.15^*	0.06^*
Age	r	−0.37^*	−0.38^*	−0.36^*	−0.31^*	−0.40^*	−0.35^*	−0.31^*	−0.30^*
Sex	d	0.18^**	0.19^**	0.40^*	0.57^*	0.42^*	0.51^*	0.53^*	0.58^*
HVadj	r	0.26^*	0.25^*	0.24^*	0.21^*	0.26^*	0.19^*	0.31^*	0.28^*

Note. HVadj = hippocampal volume adjusted for intracranial volume; ADNI = Alzheimer’s Disease Neuroimaging Initiative; HABS = Harvard Aging Brain Study; AIBL = Australian Imaging, Biomarker and Lifestyle Study of Ageing; A4 = Anti-Amyloid Treatment of Asymptomatic Alzheimer’s Disease; PACC = preclinical Alzheimer cognitive composite; lPACC = latent PACC; zPACC = standardized PACC.

p < .0001.

^**

p < .001.

^***

p < .01.