Table 2. Demographic parameters of brain tumor cases and controls.
| Variables | Cases (n=250) | Controls (n=250) | Tumor tissues (n=96) |
|---|---|---|---|
| Age (years) | |||
| Median (range) | 42 (8–88) | 47 (9–88) | 45 (21–71) |
| Age | |||
| ≤30 | 62 (24.8%) | 49 (19.6%) | 12 (12.5%) |
| >30 | 188 (75.2%) | 201 (80.4%) | 84 (87.5%) |
| Gender | |||
| Males | 165 (66%) | 172 (68.8%) | 59 (61.5%) |
| Females | 85 (34%) | 78 (31.2%) | 37 (38.5%) |
| Smoking | |||
| Smokers | 83 (33.2%) | 120 (48%) | 44 (46%) |
| Non-smokers | 167 (66.8%) | 130 (52%) | 52 (54%) |
| Family history | |||
| Positive | 26 (10.4%) | - | 13 (14%) |
| Negative | 224 (89.6%) | - | 83 (86%) |
| Brain tumor types | |||
|
Glioma Diffuse astrocytoma (II) Anaplastic astrocytoma (III) Choroid glioma (II) Oligodandroglioma (II) Anaplastic oligodandroglioma (III) GBM (IV) Diffuse medine glioma (IV) Eppendoma (II) |
170 (68%) 35 64 25 06 04 27 06 03 |
- | 68 (70.8%) 07 19 12 05 03 11 04 07 |
|
Meningioma Meningioma (I) Atypical meningioma (II) Anaplastic meningioma (III) |
64 (25.6%) 21 30 13 |
- | 21 (21.9%) 09 08 04 |
|
Pituitary adenoma Grade II Grade III |
16 (6.4%) 09 07 |
- | 07 (7.3%) 04 03 |
| Tumor grade | |||
| Grade I | 21 | 09 | |
| Grade II | 108 | 43 | |
| Grade III | 88 | 29 | |
| Grade IV | 33 | 15 | |
| Ionizing radiation | |||
| Exposed | 24 (9.6%) | - | 16 (16.7%) |
| Unexposed | 226 (90.4%) | - | 80 (83.3%) |