Table 2. Costa Rica: Descriptive statistics of age (years) at the time of diagnosis for patients with a diagnosis of : retinoblastoma by gender—HNN, 2009–2015 (N = 36 patients).

Gender	Patients	Average	Standard deviation	Minimum	Maximum	Mode	Quartile 1	Quartile 2	Quartile 3
Total	36	1.6	1.6	0.08	7.0	1.0	0.8	1.0	2.0
Female	20	1.8	1.6	0.08	7.0	2.0	0.9	1.5	2.0
Male	16	1.4	1.6	0.25	7.0	1.0	0.6	1.0	1.7

Source: patient records, HNN.