Measures
breast cancer, PD, Cancer
BREAST CANCER, RECURRENCE, CANCER
Socio-demographic and medical variables were self-reported and assessed at baseline and at all time points, respectively. The self-report questionnaires were assessed at all time points.The primary outcomes FCR and PD were both assessed with the Dutch translation of the Fear of Cancer Recurrence Inventory (FCRI-NL) [Since there was no measure for self-efficacy for online self-help available, self-efficacy was assessed with a 15-item questionnaire developed for this RCT and described in the study protocol, which measured: (1) general internet use (3 items); (2) health-related behavior (7 items); and (3) patients’ expectations of online self-help training for FCR (5 items) [Psychosocial problems and risk factors were assessed with the Psychosocial Distress Questionnaire-Breast Cancer (PDQ-BC), a 35-item multidimensional screening instrument specific for breast cancer patients [