Characteristics of 200 participating physicians
| Characteristic | Value |
|---|---|
| Sex (Female/male) | 64/136 |
| Mean age (range) | 52 years (28–75 years) |
| Specialty | |
| Family medicine | 129 |
| General internal medicine | 52 |
| Emergency medicine | 11 |
| Medicine/paediatrics | 8 |
| Year of graduation from medical school (mean, range) | 1987, 1968–2012 |
| Percentage of effort that is clinical practice (mean, range) | 70%, 0–100% |
| Country of residence | |
| USA | 105 |
| Switzerland | 78 |
| Canada | 2 |
| Other | 15 |