Table 4. ENI background and index institution characteristics.
| Degree Group | # ENI | % of Total Cohort |
| MD | 289 | 19% |
| MD, PhD | 172 | 11% |
| PhD (or equiv.) | 1041 | 68% |
| Other | 20 | 1% |
| Prior K Award | # ENI | % of Total Cohort |
| No | 1249 | 83% |
| Yes | 247 | 17% |
| Institution US or Foreign | # ENI | % of Total Cohort |
| Foreign | 125 | 8% |
| US | 1371 | 92% |
| Institution Type | # ENI | % of Total Cohort |
| Independent Hospital | 130 | 9% |
| Higher Education (non-medical school) | 636 | 43% |
| Other Health, Health-rel., Community Srvc. | 36 | 2% |
| Independent Research | 156 | 10% |
| Medical School | 429 | 29% |
| Company | 108 | 7% |
| Foreign | 1 | < 1% |