Table 6.

Means, F test results, and effect sizes.

Dependent variable	Pretest measurement, mean (SD)	Posttest measurement, mean (SD)	6-month follow-up, mean (SD)	F test (df)a	η p 2
eHealth literacy efficacy	19.86 (8.08)	33.37 (4.68)	32.06 (5.93)	373.82 (2)	0.676
Computer and web knowledge	12.59 (4.69)	16.44 (3.08)	15.66 (3.30)	89.60 (2)	0.334
Basic computer and web operation	6.29 (3.75)	10.17 (2.10)	9.44 (2.62)	167.92 (2)	0.484
Information-seeking skills	2.18 (2.63)	3.69 (2.63)	4.32 (2.56)	52.92 (2)	0.228
Website evaluation skills	4.02 (2.00)	5.04 (1.89)	5.24 (2.05)	35.80 (2)	0.167

^aP value for all F test values is <.001.