3.3. Multivariate multilevel models
The multivariate multilevel models, interaction and main effects
estimates are detailed (table b) and depicted (figure a) in the supplementary
material. There seemed to be no direct effect of T1
knowledge level on any of the psychological outcomes at T2.
However a significant interaction between knowledge level and
‘discrepancy in perception’ at T1 on IES-Intrusion scores at T2 was
observed, that is, a higher level of knowledge at T1 predicted higher
IES-Intrusion scores after BRCA1/2 test result disclosure in women
who over-estimated their risk of having a BRCA1/2 mutation
(Table 3). This was also the case for women who presented a more
adequate genetic risk perception who revealed higher IES-Intrusion
mean scores for a high knowledge level.
Younger age and under-estimation of the risk of having a BRCA1/
2 mutation predicted an increase in perceived personal control.
Anxious preoccupation about personal BC diagnosis significantly
increased all distress outcomes. A BRCA1/2 þ and UV test result
significantly increased the level of IES-Intrusion (Table b of supplementary
material).