Table 3 International classification of primary care second edition (ICPC-2) category of the final diagnosis of patients referred to the General Medicine Department (n = 408)
From: Investigation of diseases that cause diagnostic difficulty for Japanese general physicians
| ICPC-2 organ system category | Referred by general physicians | Referred by other physicians | |
|---|---|---|---|
| n (%) | n (%) | P value | |
| A. General & Unspecified | 35 (20.7) | 26 (10.9) | 0.007 |
| B. Blood, Blood Forming Organs & Immune Mechanism | 11 (6.5) | 11 (4.6) | 0.505 |
| D. Digestive | 20 (11.8) | 20 (8.4) | 0.311 |
| F. Eye | 0 (0) | 2 (0.8) | 0.514 |
| H. Ear | 6 (3.6) | 6 (2.5) | 0.564 |
| K. Cardiovascular | 6 (3.6) | 14 (5.9) | 0.356 |
| L. Musculoskeletal | 21 (12.4) | 29 (12.1) | 1.000 |
| N. Neurological | 10 (5.9) | 18 (7.5) | 0.558 |
| P. Psychological | 31 (18.3) | 69 (28.9) | 0.019 |
| R. Respiratory | 11 (6.5) | 10 (4.2) | 0.364 |
| S. Skin | 3 (1.8) | 10 (4.2) | 0.254 |
| T. Endocrine/Metabolic & Nutritional | 8 (4.7) | 8 (3.3) | 0.606 |
| U. Urological | 2 (1.2) | 6 (2.5) | 0.478, |
| W. Pregnancy, Childbearing, Family Planning | 0 (0) | 0 (0) | NA |
| X. Female Genital (including breasts) | 3 (1.4) | 4 (1.7) | 1.000 |
| Y. Male Genital | 0 (0) | 0 (0) | NA |
| Z. Social Problems | 0 (1.4) | 3 (1.3) | 0.270 |
| Uncertain diagnosis | 2 (1.4) | 3 (1.3) | 1.000 |
| Total | 169 | 239 |