Summary of patient characteristics (n=93)
| n | % | |
| Gender: | ||
| Male | 55 | (59.1) |
| Female | 38 | (40.9) |
| Laterality: | ||
| Unilateral Right Left | 69 34 35 | (74.2) |
| Bilateral | 24 | (25.8) |
| Leukocoria noted by parents: | ||
| Yes | 74 | (79.6) |
| No | 19 | (20.4) |
| Age at diagnosis (months): | ||
| <6 | 17 | (18.3) |
| 6.1–12 months | 22 | (23.7) |
| 12.1–24 months | 20 | (21.5) |
| >24 months | 33 | (35.5) |
| International Intraocular Retinoblastoma Classification7 grade: | ||
| A | 0 | (0.0) |
| B | 1 | (1.1) |
| C | 8 | (8.6) |
| D | 35 | (37.6) |
| E | 48 | (51.6) |
| Missing | 1 | (1.1) |
| Mean overall diagnostic interval (months): | ||
| <1 | 36 | (38.7) |
| 1.1–3 | 29 | (31.2) |
| 3.1–6 | 18 | (19.4) |
| >6 | 10 | (10.7) |
| Years of diagnosis: | ||
| 2012–February 2014 | 32 | (34.4) |
| 2009–2011 | 40 | (43.0) |
| 2006–2008 | 21 | (22.6) |