Odds Ratios Derived from the Hierarchical Model Describing the Odds of Prostate-Specific Antigen Testing during the Last Year*
| Practice-level Attributes | Practices (n) | Patients (n) | P |
|---|---|---|---|
| Office volume | 38 | 229 | .99 |
| Minority Status | 37 | 208 | .20 |
| Medicare | 38 | 222 | .84 |
| Medicaid | 34 | 194 | .20 |
| Communication† | 28 | 145 | .022 |
| Decision Making | 28 | 145 | .42 |
| Stress/Busyness | 28 | 145 | .18 |
| History of Change | 28 | 145 | .94 |
* After controlling for age, no. of visits within last 2 years, no. of comorbid conditions, whether cholesterol screening was done within the past year, solo versus group practice, and age of practice and average patient age.
† Comparing a practice at the 25th and 75th percentiles (a difference of 0.93 points), this has an odds ratio of 5.03 and a CI of 1.29–19.71. That is, the odds of prostate-specific antigen screening for a man 75 years of age or older in a practice at the 25th percentile of “Communication” are 5.03 times the odds for a similar man in a practice at the 75th percentile of “Communication.”