TABLE 1.
Number of categories and unique AEs in each CTC version
| CTC version | Publication year | Categories | Number of AEs |
|---|---|---|---|
| CTC v1.0 | 1983 | 9 | 49 |
| CTC v2.0 | 1999 | 24 | 295a |
| CTCAE v3.0 | 2006 | 28 | 373b |
| CTCAE v4.0 | 2009 | 26 | 790 |
| CTCAE v5.0 | 2017 | 26 | 837 |
a
There are an additional 39 AEs if “RTOG/EORTC Late Radiation Morbidity Scoring Scheme: Use for adverse event occurring greater than 90 days after radiation therapy” is included (total # of AEs: 334).
b
There are an additional 537 AEs if all of the “Selects” drop-down options (e.g., surgery/intraoperative injury, pain, infection) are included (total # of AEs: 910).