Table 4 Results of principal components analysis
From: Physicians' intentions and use of three patient decision aids
| Â | Component Loading |
|---|---|
Component 1 – Quality and Value for Patients |  |
   Helps patients in reaching a decision | 0.72 |
   Helps prepare patients for decision making | 0.72 |
   Will improve patients' decision making | 0.67 |
   Allows patients to participate as they wish in decision making process | 0.65 |
   Helps patients understand risk/benefits of treatment choices | 0.62 |
   Will be simple to use | 0.59 |
   Apply to sizable proportion of patients | 0.59 |
   Guides patients through decision making in logical fashion | 0.59 |
   Will be acceptable to patients | 0.53 |
   Well organized | 0.50 |
   Presents probabilities of risk/benefits in understandable manner | 0.49 |
   Combination of workbook and tape good | 0.49 |
Component 2 – Value for Physicians |  |
   Will improve quality of patient visits | 0.79 |
   Will increase patient satisfaction with my care | 0.77 |
   Will positively affect my relationship with patients | 0.74 |
   Will help me tailor counselling to patients' needs | 0.74 |
   Will provide easily observable benefits for the patient | 0.71 |
   Will help me understand issues important to patient | 0.65 |
   Will save me time | 0.63 |
   Will improve my usual approach | 0.60 |
   Reliable tool for helping patients | 0.50 |
   Will complement my usual approach | 0.47 |
Component 3 – Decision Aid Content |  |
   Evidence presented reflects my understanding of the data | 0.72 |
   Evidence about choices presented in unbiased manner | 0.71 |
   Information on choices balanced | 0.67 |
   Description of risk/benefits of choices supported by evidence | 0.66 |
   Decision aid well developed | 0.65 |
   Essential information for decision making provided | 0.64 |
   Developers credible | 0.62 |
   Evidence presented is up-to-date | 0.58 |
   Clearly describes treatment choices | 0.55 |
   Compatible with how I think patients should be informed about choices | 0.51 |
   Decision aid not influenced by vested interests | 0.46 |
Component 4 – Implementation |  |
   Will not require reorganization of my practice | 0.73 |
   Will be easy to use in my practice | 0.60 |
   Decision aid provides information that is not too complex for patients | 0.59 |
   Will not require major changes to the way I currently discuss the topic | 0.52 |
   Likely to be used by most of my colleagues | 0.47 |
   Easy to experiment with before deciding to adopt it in practice | 0.46 |
Items removed from factor analysis due to multiple loading or factor loading < 0.45 | |
   Worksheet adds value to decision aid | <0.45 |
   Will produce greater good than harm | <0.45 |
   Will be useful in my practice | Component 1 and 2 |
   Would not be used if I am required to purchase it | <0.45 |