| Dependent Variables for Logistic Regressions |
Potential Predictor Variable | High Knowledge of Therapy* | Prior Use of Therapy* | Prior Use of Therapy for Back Pain* | High Expectations of Success of Therapy* | Likelihood of Trying Therapy at No Cost* | Likelihood of Trying Therapy for $10 Co-pay** |
|
Geographic location (Boston vs. Seattle) | X¶ | X | X | X | X | X |
Age (65+ vs. < 65) | X | X | X | X | X | X |
Gender (female vs. male) | X | X | X | X | X | X |
Race (white, non-white) | X | X | X | X | X | X |
Education (no college vs. some college) | X | X | X | X | X | X |
≥ 5 years since first back pain | X | | | | X | X |
≥ 90 days of LBP in last 6 mo. | X | | | | X | X |
High symptom bothersomeness (7 – 10) on a 0 – 10 scale | X | | | | X | X |
High knowledge of therapy (4 or 5) on a 1 – 5 scale | | | | X | X | X |
Prior use of therapy | | | | X | X | X |
Prior use of therapy for back pain | | | | X | X | X |
High expectations of therapy (7 – 10) on a 0 – 10 scale | | | | | X | X |
Medication usage in past week | | | | | X | X |
Prior harm from therapy | | | | | X | X |
* Separate models were done for each of the five therapies (acupuncture, chiropractic, massage, meditation, t'ai chi) ** Separate models were done for acupuncture, chiropractic, and massage.
¶An X indicates that a particular potential predictor variable was evaluated in a model with the specific dependent variable.