Table 2.

Effect of personalized breast cancer risk information on Time 1 social-cognitive variables^a

Outcome	F	p	η2partial	Non-personalized		Personalized
				Mean	SE	Mean	SE
Hypothesis 1 (entire sample)
Intentions	11.5	0.001	0.09	4.0	0.1	4.5	0.1
Self-efficacy	5.2	0.02	0.04	3.4	0.1	3.8	0.1
Response efficacy	7.2	0.01	0.06	3.5	0.1	3.9	0.1
Hypothesis 3 (entire sample)
Post-intervention perceived risk	0.0	0.99	0.00	4.1	0.2	4.1	0.2
Hypothesis 4 (personalized only)
Change in perceived riskb	15.2	.001	0.35	-	-	-	-
Initial underestimators	4.4c	.001	0.78d	-	-	0.7	0.2
Initial overestimators	−2.6c	.02	0.69d	-	-	−1.1	0.4
Initial accurate	−2.2c	.05	0.58d	-	-	−.5	0.2

^aAll analyses controlled for the following covariates: educational attainment, race/ethnicity, family history of breast cancer, and stage of engagement in physical activity.

^bChange in perceived risk from pre- to post-intervention among women who received personalized risk information only, according to whether they overestimated, underestimated, or accurately underestimated their risk prior to engaging with the risk assessment tool, n=66. Mean values are difference scores.

^cNumbers are t-values, not F-values.

^dNumbers are Cohen’s D effect sizes, not partial η² effect sizes.