Table 1.
Numbers of malignant glioma cases and person-years at risk in study population
| Endpoint | ICD-3 topography code | ICD-3 morphology code | Number of cases |
|---|---|---|---|
| All glioma | — | 9380-9480 | 24 813 |
| Astrocytoma | — | 9400, 9401, 9410, 9411, 9420, 9421, 9424, 9440-9442 | 19 920 |
| Primary anatomical site | |||
| Temporal lobe | C71.2 | — | 5147 |
| Other specified site | C71.0, C71.1, C71.3-71.7 | — | 13 457 |
| Poorly specified site | C71.8, C71.9 | — | 6209 |
| WHO classification | |||
| Low grade | — | 9391, 9393, 9400, 9410, 9411, 9420, 9421, 9424, 9450 | 4821 |
| High grade | — | 9390, 9392, 9401, 9423, 9430, 9440-9442, 9451, 9470-9474 | 17 459 |
| Grade unspecified | — | 9380-9383, 9394, 9460, 9480 | 2533 |
| Total person-years at risk | — | — | 295 348 464 |