Table 2 Annual changes in CNS tumour incidence rates in Danish children, 1980–1996
From: Increasing incidence of childhood tumours of the central nervous system in Denmark, 1980–1996
Tumour definition | n | Percent change in incidence rate per year (95% CI) | P -value |
|---|---|---|---|
All CNS tumours | 626 | 2.9 (1.3;4.5) | 0.0005 |
Tumour morphology | |||
Astrocytoma | 247 | 4.4 (1.8;7.0) | 0.0009 |
Pilocytic astrocytomas | 66 | 11.9 (6.2;17.9) | < 0.0001 |
Other astrocytomasa | 181 | 1.9 (– 1.0;4.9) | 0.21 |
Primitive neuroectodermal tumours | 111 | 2.9 (–0.9;6.8) | 0.13 |
Ependymoma | 58 | 1.8 (–3.3;6.9) | 0.49 |
Other glioma | 20 | –0.7 (–9.2;8.5) | 0.87 |
Others | 190 | 1.6 (–1.3;4.6) | 0.27 |
Not histologically verified | 100 | 1.0 (–2.9;5.1) | 0.61 |
Tumour topography | |||
Cerebellum | 183 | 1.3 (–1.6;4.2) | 0.40 |
Cerebrum | 175 | 4.6 (1.5;7.8) | 0.003 |
Brain stem | 79 | 2.1 (–2.3;6.7) | 0.35 |
Other locations | 189 | 3.2 (0.3;6.2) | 0.03 |
