Table 2.

Means, Distributions, and Pairwise Correlations of the Cognitive Tests in the Phone Interview and Web Survey (N = 925)

Cognitive test	Means (SD)		Difference	Paired-sample t test	p	Correlation across administration mode
	Phone	Web
Immediate word recall	6.1 (1.6)	5.4 (1.8)	0.68	10.49	<.0001	0.34
Delayed word recall	5.1 (1.9)	4.3 (2.1)	0.75	10.22	<.0001	0.40
Serial 7s	4.1 (1.2)	4.4 (1.0)	−0.31	−7.17	<.0001	0.32