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Table 2 Variables, instruments and assessment times

From: Using a state cancer registry to recruit young breast cancer survivors and high-risk relatives: protocol of a randomized trial testing the efficacy of a targeted versus a tailored intervention to increase breast cancer screening

Concepts/variables Instruments Survivor High-risk relative
Baseline Follow up Baseline Follow up
Perceived breast cancer risk Perceived breast cancer risk [11, 20]   
Knowledge of breast cancer risk factors Breast cancer risk factor knowledge index [11, 21]
Knowledge of breast cancer genetics Knowledge of breast cancer gene inheritance [22]
Perceived facilitators vs. barriers of mammography screening Decisional balance scale for mammography [23, 24]
Subjective norms      
Perceived family expectations about breast cancer screening Adapted from Ajzen et al. [14]
Motivation to comply with family members’ expectations Adapted from Ajzen et al. [14]
Family support      
Perceived family support for breast cancer screening Social support for breast cancer screening [25]
Self-efficacy in utilizing breast cancer screening services Self-efficacy for mammography, CBE, cancer genetic services [14]
Intention to pursue mammogram, CBE, genetic counseling (when applicable) Intention to pursue mammography, CBE, and cancer genetic services (when applicable) [14]
Current screening practices Behavioral risk factors surveillance system [24]
Demographics/personal and family history Behavioral risk factors surveillance system [26]   
Breast cancer risk (Gail model) Breast cancer risk assessment tool [27]   
Breast cancer risk (Claus model) Claus breast cancer risk tables [13]     
Evaluation of the Acceptability of the Intervention TBD by researchers