Table 2.
Provider and practice characteristics of American Medical Association (AMA) source data
| Provider/Practice Characteristic | Sample (N; n=350) | AMA Data (n=9515) |
|---|---|---|
| Specialization | ||
| Internist | 6% (21) | 20.8% |
| Hospitalist | 4.9% (17) | 5.1% |
| Nephrologist | 87.1% (305) | 74.2% |
| Other | 2% (7) | — |
| Dialysis facilitya | ||
| Hospital-based large dialysis organization | 7.4% (26) | — |
| Freestanding large dialysis organization | 52.9% (185) | — |
| Hospital-based independent facility | 14.6% (51) | — |
| Freestanding independent facility | 12.3% (43) | — |
| Sex | ||
| Men | 78.6% (275) | 76.1% |
| Women | 21.4% (75) | 23.8% |
| Region of practice | ||
| Northeast | 28% (98) | 25% |
| South | 34% (119) | 36% |
| Midwest | 14.6% (51) | 19% |
| West | 23.1% (81) | 19.8% |
| Type of practicea | ||
| Clinical general internal medicine | 8.3% (29) | — |
| Clinical nephrology | 78.5% (273) | — |
| Clinical research | 7.5% (26) | — |
| Basic science research | 1.2% (4) | — |
| Practice settinga | ||
| Private community practice | 59.4% (208) | — |
| University clinical faculty | 19.7% (69) | — |
| Academic research faculty | 6.0% (21) | — |
| Health maintenance organization | 6.3% (22) | — |
| Veterans Administration | 4.9% (17) | — |
| Other | 3.7% (13) | — |
| Years of experiencea | ||
| 1–10 | 16.3% (57) | — |
| 11–20 | 40.3% (141) | — |
| 21–30 | 22.9% (80) | — |
| More than 30 | 17.7% (62) | — |
| Physician age (yr) | ||
| <41 | 36% (125) | 23% |
| 41–50 | 30% (105) | 30% |
| 51–60 | 22% (77) | 30% |
| >60 | 12% (43) | 18% |
Percentages do not all add to 100%; missing values were not included.
a
Information was not available from the AMA Masterfile in these areas.