Table 1. Clinical Characteristics of 1404 Patients With Retinoblastoma.
| Characteristic | Affected eye with retinoblastoma | |
|---|---|---|
| Unilateral (n = 866) | Bilateral (n = 538) | |
| Age at diagnosis | ||
| Mean (SD), mo | 25.7 (24.4) | 11.9 (11.0) |
| Median (range) [IQR], mo | 22 (1-372) [11-34] | 9 (0-104) [5-15] |
| Not available, No.(%) | 181 (20.9) | 73 (13.6) |
| Sex, No. (%) | ||
| Male | 387 (44.7) | 283 (52.6) |
| Female | 479 (55.3) | 255 (47.4) |
| Familial form, No. (%) | ||
| Yes | 22 (2.5) | 96 (17.8) |
| No | 844 (97.5) | 442 (82.2) |
| IIRC group at diagnosis, No. (%)a | ||
| A | 2 (0.3) | 1 (0.3) |
| B | 37 (5.9) | 30 (7.6) |
| C | 38 (6.1) | 30 (7.6) |
| D | 429 (68.8) | 253 (64.4) |
| E | 118 (18.9) | 79 (20.1) |
| Not available | 242 (27.9) | 145 (26.9) |
Abbreviations: IIRC, International Intraocular Retinoblastoma Classification; IQR, interquartile range.
a
The most affected eye in bilateral cases.