Table 2.

Adjusted longitudinal association between digital device ownership and cognitive function over time (Total Number of Observations=33,956).

Variables		Point Estimates (95% CI)	P value
Baseline Cognitive Function
	No Desktop or Cellphone	reference
	Desktop or Cellphone Alone	0.10 (0.07-0.13)	<.001
	Desktop and Cellphone Both	0.20 (0.15-0.24)	<.001
Longitudinal Protective Association in 2 Years
	No Desktop or Cellphone	reference
	Desktop or Cellphone Alone	0.02 (–0.02 to 0.05)	.39
	Desktop and Cellphone Both	0.02 (–0.02 to 0.08)	.30
Longitudinal Protective Association in 4 Years
	No Desktop or Cellphone	reference
	Desktop or Cellphone Alone	0.07 (0.03-0.10)	<.001
	Desktop and Cellphone Both	0.10 (0.05-0.15)	<.001