Table 3 Factor loadings from exploratory factor analysis
Item | Factor 1 | Factor 2 | Factor 3 | Factor 4 | Factor 5 |
|---|---|---|---|---|---|
Referring patients to clinical trials is personally rewarding | 0.85 | −0.01 | − 0.01 | − 0.01 | − 0.05 |
Recommending studies to patients is important to me | 0.78 | 0.10 | 0.08 | − 0.18 | − 0.07 |
Facilitating clinical trial recruitment is a valuable part of my job | 0.72 | −0.09 | 0.11 | 0.12 | −0.17 |
No time to assess protocols | −0.60 | 0.03 | 0.20 | 0.07 | −0.05 |
Electronic health record recruitment alerts | −0.09 | 0.86 | −0.04 | −0.08 | 0.03 |
Health record documentation of patient enrollment and study outcomes | 0.01 | 0.74 | 0.20 | −0.03 | −0.22 |
Consistent clinic-level workflow for referring patients | 0.30 | 0.58 | −0.08 | 0.05 | −0.02 |
Introduction to study presented in clinic | 0.25 | 0.53 | −0.13 | −0.25 | 0.00 |
Do not receive recognition for referring patients | −0.24 | −0.56 | − 0.13 | −0.18 | − 0.16 |
No financial support for participating in referral | −0.20 | − 0.59 | −0.04 | − 0.23 | −0.15 |
Study participation is too burdensome for patients | 0.11 | 0.08 | 0.87 | 0.01 | 0.15 |
Patients aren’t interested in participating in trials | −0.01 | −0.13 | 0.83 | −0.01 | −0.12 |
Patients live too far away from research site | −0.09 | 0.18 | 0.81 | −0.01 | −0.03 |
Patients wary of loss of privacy/confidentiality | 0.02 | −0.10 | 0.66 | 0.10 | 0.10 |
Uncertainty about health effects of investigational treatments | −0.01 | −0.01 | 0.05 | 0.84 | −0.13 |
Uncertainty about trustworthiness of study sponsor or investigator | −0.01 | 0.16 | −0.17 | 0.74 | 0.09 |
Study could negatively affect relationship with patients | −0.04 | 0.00 | 0.03 | 0.74 | 0.03 |
Lose control over managing patient’s care | −0.03 | − 0.15 | 0.09 | 0.73 | 0.00 |
Not knowledgeable about study topic | −0.04 | −0.03 | − 0.08 | −0.07 | 0.89 |
Unsure how to evaluate study protocols | −0.11 | −0.05 | 0.16 | 0.12 | 0.80 |
Not aware of what trial opportunities exist | 0.01 | 0.26 | 0.14 | −0.19 | 0.54 |
Full-time, onsite study coordinator to enroll patients | 0.13 | 0.11 | −0.03 | 0.07 | 0.12 |
Dedicated time to participate in research | −0.07 | 0.10 | −0.07 | 0.13 | 0.03 |
Absence of feedback about trial results | −0.20 | −0.30 | 0.29 | 0.00 | 0.32 |
No clinic-wide process to identify appropriate trials | 0.29 | −0.24 | 0.06 | −0.05 | 0.38 |
Bilingual coordinator to help refer non-English speaking patients | 0.08 | 0.19 | 0.04 | 0.09 | 0.22 |
No time to discuss research with patients | −0.44 | −0.23 | 0.17 | 0.02 | −0.13 |
Recruiting patients via primary care will improve trial participation | 0.44 | 0.11 | 0.01 | 0.02 | 0.16 |
Factor characteristics: | |||||
Eigenvalue | 4.31 | 4.24 | 3.23 | 2.93 | 2.48 |
Variance Explained | 0.22 | 0.21 | 0.16 | 0.15 | 0.12 |
Cronbach’s alpha | 0.80 | 0.85 | 0.85 | 0.83 | 0.77 |