Table 2. Children with first-time childhood cancer (n=799) by age at diagnosis, year of diagnosis, and major cancer types (ICCC-3), identified among 687 406 livebirths, Norway, 1999–2010.

	Cancer cases	%
Age at cancer diagnosis (years)
<2	326	41
2–3	211	26
4–5	150	19
⩾6	112	14
Year of cancer diagnosis
1999–2001	59	7
2002–2004	172	22
2005–2007	239	30
2008–2010	329	41
Cancer types (ICCC-3)
I Leukemias, myeloproliferative diseases, and myelodysplastic diseases	268	34
Lymphoid leukemia	208
Acute myeloid leukemias	45
II Lymphomas and reticuloendothelial neoplasms	42	5
III CNS and miscellaneous intracranial and intraspinal neoplasms	185	23
Ependymoma	26
Astrocytoma	79
Intracranial and intraspinal embryonal tumours	50
IV Neuroblastoma and other peripheral nervous cell tumours	72	9
Neuroblastoma and ganglioneuroblastoma	71
VI Renal tumours	53	7
Wilms' tumour	52
IX Soft tissue and other extraosseous sarcomas	64	8
Rhabdomyosarcoma	24
Other specified soft tissue sarcomas	28
Other cancers	115	14
Total	799	100

Abbreviations: CNS=central nervous system; ICCC-3=International Classification of Childhood Cancer, third edition (Steliarova-Foucher et al, 2005).