Table 1.
Distribution of patients according to the type of cancer, stage, and diagnosis of depression based on ICD-9-CM (International Classification of Diseases, Ninth Revision, Clinical Modification) codification.
| Cancer type, cancer stage | Number of patients, n/N (%) | Depression (ICD-9-CM) after cancer diagnosis, n/N (%) | |
| Breast | |||
|
|
In situ | 234/2032 (11.5) | 40/234 (17.1) |
|
|
Stage I | 739/2032 (36.4) | 152/739 (20.6) |
|
|
Stage II | 781/2032 (38.4) | 166/781 (21.3) |
|
|
Stage III | 278/2032 (13.7) | 82/278 (29.5) |
|
|
All stages | 2032/2032 (100) | 440/2032 (21.7) |
| Colorectal | |||
|
|
In situ | 544/2206 (24.7) | 48/544 (8.8) |
|
|
Stage I | 438/2206 (19.9) | 61/438 (13.9) |
|
|
Stage II | 656/2206 (29.7) | 94/656 (14.3) |
|
|
Stage III | 568/2206 (25.7) | 96/568 (16.9) |
|
|
All stages | 2206/2206 (100) | 299/2206 (13.6) |
| Total | 4238/4238 (100) | 739/4238 (17.4) | |