Table 2. Multiple Regression Model of Association of Lifestyle Factors With Cortical Amyloid Burden.

Lifestyle factor	PiB mean SUVR
	β (95% CI)	P value
Walking steps, steps/d	−0.044 (−0.228 to 0.14)	.64
Conversation time, min/d	−0.004 (−0.184 to 0.176)	.97
TST, min/d	−0.152 (−0.325 to 0.021)	.08
WASO, min/d	0.101 (−0.081 to 0.282)	.27
Sleep efficiency, %/d	−0.143 (−0.322 to 0.036)	.12
Waking time count, counts/d	0.11 (−0.076 to 0.295)	.24
Nap time, min/d	−0.033 (−0.204 to 0.138)	.70

Abbreviations: PiB, carbon-11 Pittsburgh compound B; SUVR, standardized uptake value ratio; TST, total sleep time; WASO, time awake after sleep.