Table 1.
Symptoms Associated with Brain Tumors
| Variable | Cases, n(%) n = 3,505 |
Controls, n(%) n = 24,021 |
Positive Predictive Value (95% CI) |
|---|---|---|---|
| Headache | 362 (10.2) | 261 (2.6) | 0.09% (0.08–0.10) |
| Motor Loss | 308 (8.7) | 731 (3.1) | 0.026% (0.024–0.030) |
| New-onset Seizure | 154 (4.4) | 8 (0.05) | 1.2% (1.0–1.4) |
| Confusion | 109 (3.1) | 47 (0.2) | 0.20% (0.16–0.24) |
| Weakness | 95 (2.7) | 42 (0.2) | 0.14% (0.11–0.18) |
| Memory Loss | 37 (1.1) | 64 (0.4) | 0.036% (0.026–0.052) |
| Visual disorder | 35 (1.0) | 62 (0.3) | 0.035% (0.025–0.051) |
Table 1 adopted from Reference #6 (Hamilton, Br J Gen Pract, 2007)