| Clinician age (years) (n = 848 respondents) | | | 3.12 | 3 | .37 |
| <40 | 119 | 14% vs. 15% | | | |
| 40–49 | 271 | 32% vs. 35% | | | |
| 50–59 | 331 | 39% vs. 37% | | | |
| ≥60 | 127 | 15% vs. 13% | | | |
| Sex (n = 851 respondents) | | | 0.23 | 1 | |
| Female | 255 | 30% vs. 31% | | | |
| Male | 596 | 70% vs. 69% | | | |
| Time since medical school graduation (years) (n = 851 respondents) | | | 6.69 | 3 | .08 |
| 0–10 | 68 | 8% vs. 9% | | | |
| 11–20 | 289 | 34% vs. 40% | | | |
| 21–30 | 315 | 37% vs. 34% | | | |
| ≥31 | 179 | 21% vs. 18% | | | |
| Practice location (by Census region) (n = 843 respondents) | | | 0.31 | 2 | .86 |
| Northeast | 128 | 15% vs. 15% | | | |
| Midwest | 238 | 28% vs. 28% | | | |
| South | 278 | 33% vs. 34% | | | |
| West | 196 | 23% vs. 22% | | | |
| Practice location (n = 843 respondents) | | | 0.31 | 2 | .86 |
| Urban | 169 | 20% vs. 21% | | | |
| Suburban | 379 | 45% vs. 44% | | | |
| Rural | 295 | 35% vs. 36% | | | |
| Percentage of time spent in direct patient care | 851 | 90% vs. 89% | Z = 2.43 | | .02 |