ORs for glioma and meningioma with level of total cumulative specific energy exposure (in joules per kilogram) in different windows of time before diagnosis of the case in subjects with probable tumour centre estimated by a neuroradiologist or computer algorithm*
| Glioma | Meningioma | |||||
| Cases | Controls | OR (95% CI) | Cases | Controls | OR (95% CI) | |
| <3 years in the past | ||||||
| Never regular user in this time period | 206 | 647 | 1.00 | 300 | 667 | 1.00 |
| <76.7 | 111 | 350 | 0.88 (0.61 to 1.26) | 128 | 353 | 0.81 (0.59 to 1.11) |
| 76.7– | 72 | 271 | 0.63 (0.41 to 0.96) | 84 | 252 | 0.79 (0.54 to 1.14) |
| 284.1– | 75 | 224 | 0.73 (0.46 to 1.16) | 67 | 259 | 0.69 (0.46 to 1.04) |
| 978.9– | 40 | 141 | 0.56 (0.32 to 0.99) | 51 | 144 | 0.92 (0.57 to 1.47) |
| 3123.9+ | 47 | 87 | 1.29 (0.68 to 2.47) | 46 | 126 | 0.86 (0.49 to 1.53) |
| 3–6 years in the past | ||||||
| Never regular user in this time period | 270 | 917 | 1.00 | 417 | 962 | 1.00 |
| <76.7 | 60 | 218 | 1.05 (0.69 to 1.61) | 79 | 211 | 1.09 (0.75 to 1.56) |
| 76.7– | 64 | 170 | 1.36 (0.88 to 2.11) | 41 | 168 | 0.73 (0.46 to 1.15) |
| 284.1– | 51 | 167 | 1.04 (0.62 to 1.75) | 45 | 180 | 0.93 (0.58 to 1.50) |
| 978.9– | 49 | 132 | 1.14 (0.65 to 2.01) | 48 | 132 | 1.08 (0.65 to 1.78) |
| 3123.9+ | 57 | 116 | 0.97 (0.49 to 1.93) | 46 | 148 | 0.76 (0.40 to 1.43) |
| 7+ years in the past | ||||||
| Never regular user in this time period | 421 | 1445 | 1.00 | 586 | 1493 | 1.00 |
| <76.7 | 20 | 63 | 1.11 (0.61 to 2.02) | 28 | 81 | 1.07 (0.64 to 1.78) |
| 76.7– | 23 | 53 | 1.53 (0.85 to 2.78) | 8 | 49 | 0.74 (0.33 to 1.67) |
| 284.1– | 24 | 53 | 1.50 (0.81 to 2.78) | 17 | 68 | 0.88 (0.47 to 1.64) |
| 978.9– | 25 | 49 | 1.69 (0.91 to 3.13) | 16 | 59 | 1.00 (0.52 to 1.92) |
| 3123.9+ | 38 | 57 | 1.91 (1.05 to 3.47) | 21 | 51 | 2.01 (1.03 to 3.93) |
↵* Unconditional logistic regression analyses stratified on age, sex and region and adjusted for education and timing of interview. Centre is taken to be as estimated by a neuroradiologist where available and as estimated by computer algorithm otherwise. Associations in each time window are adjusted for associations in each other window.