Percentage of Practice by Organ System NAMCS (2002) versus ABFM (2003/2004)
| Organ System Category | NAMCS Annual National Frequency | NAMCS 2002 1st Diagnosis Percentage | ABFM 2003 and 2004 Survey of Practice Percentage |
|---|---|---|---|
| Cardiovascular | 20,749,525 | 10.4 | 16.7 |
| Endocrine | 17,363,399 | 8.2 | 9.8 |
| Gastrointestinal | 12,387,729 | 5.1 | 9.5 |
| Hematologic/immune | 4,625,960 | 2.8 | 3.1 |
| Integumentary | 15,068,757 | 7.0 | 5.3 |
| Musculoskeletal | 31,860,955 | 13.9 | 12.2 |
| Nephrologic/urologic | 4,680,860 | 2.1 | 4.4 |
| Neurologic | 3,341,277 | 2.0 | 4.2 |
| Psychogenic/behavioral | 8,140,406 | 4.4 | 10.7 |
| Reproductive, female | 6,291,831 | 3.4 | 6.1 |
| Reproductive, male | 1,537,156 | 0.6 | 2.6 |
| Respiratory | 36,844,808 | 16.9 | 11.7 |
| Special sensory | 8,221,433 | 1.1 | 2.9 |
| Nonspecific | 35,958,364 | 16.9* | 3.4* |
| Not applicable to ABFM’s content blueprint | 1,348,820 | 0.8 | |
| Total | 208,421,280 | 100.0 | |
| Correspondence between NAMCS and ABFM survey of practice | r = 0.78* |
* The nonspecific category was not included in the correlation between NAMCS and ABFM percentages.