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Table 3 Associations between RF-EMF exposures and ‘Tinnitus’ (symptom)
| Symptom | Symptom categories (N for unadjusted model/N for adjusted model) | Exposure | Exposure categories (N for unadjusted model/N for adjusted model) | UnadjustedOR (95% CI) for each exposure category | Adjusted OR (95% CI) for each exposure category | Confounders in model |
|---|---|---|---|---|---|---|
| Tinnitus | No, hardly ever (-/194) | Cordless calls >10 minutes weekly | 0 (-/61) | Model invalid | 1 | Cold/flu**+ |
| 1 or 2 times weekly (-/73) | 1-2 (-/102) | 1.05 (0.75-1.49) | Use headset for calls*+ | |||
| 3 or 4 times weekly (-/27) | 3-9 (-/79) | 0.70 (0.48-1.01) | Decile (SES) | |||
| Most of the time (-/27)) | 10-120 (-/79) | 1.05 (0.73-1.52) | ||||
| Tinnitus | No, hardly ever (-/207) | Minutes on cordless phone daily | 0-4 (-/141) | Model invalid | 1 | Cold/flu+ |
| 1-4 times weekly (-/101) | 5-15 (-/100) | 0.86 (0.64-1.13) | Decile- | |||
| Most days (-/28) | 16-240 (-/95) | 1.03 (0.76-1.39) | Woken by phone | |||
| Use headset for calls | ||||||
| Tinnitus‡ | No, hardly ever (-/84 ) | Minutes on cordless phone daily | 0-4 (-/72) | Model invalid | 1 | Cold/flu*+ |
| 1 or 2 times weekly (-/35) | 5-15 (-/45) | 0.60 (0.25-1.42) | Use headset for calls* | |||
| 3 or 4 times weekly (-/8) | including | 16-240 (-/21) | 0.96 (0.33-2.76) | Cordless phone frequency | ||
| Most of the time (-/11) | ||||||
| Cordless phone frequency | Not exposed | 1 | Age | |||
| ≤ 900 MHz | 7.13 (1.5-33.7) | |||||
| 1.8-1.9 GHz | 7.32 (1.9-28.4)* | |||||
| 2.4 GHz | 3.56 (0.95-13.4) | |||||
| 5.8 GHz | 4.39 (0.99-19.5) | |||||
| Tinnitus | No, hardly ever (-/88) | Cordless phone frequency | Not exposed (30/27) | Model invalid | 1 | Cold/flu*+ |
| 1 or 2 times weekly (-/36) | ≤ 900 MHz (20/19) | 4.10 (1.03-16.28) | Use cellphone headset+ | |||
| 3 or 4 times weekly (-/9) | 1.8-1.9 GHz (28/27) | 4.70 (1.34-16.43) | ||||
| Most of the time (12/11) | 2.4 GHz (54/53) | 2.46 (0.77-7.86) | ||||
| 5.8 GHz (18/18) | 3.83 (0.99-14.82) | |||||
| Tinnitus | No, hardly ever (217/213) | Cellphone calls >10 minutes weekly | 0 (275/270) | 1 | 1 | Cold/flu*+ |
| 1 or 2 times weekly (79/77) | 1-6 (65/65) | 1.24 (0.92-1.66) | 1.21 (0.90-1.64) | Use of earpiece+ | ||
| 3 or 4 times weekly (26/26) | 7-35 (12/11) | 2.00 (1.01-3.94) | 1.56 (0.73-3.35) | Decile- | ||
| Most of the time (30/30) | ||||||
| Tinnitus | No, hardly ever (-/220) | Cellphone headset | No (-/327) | Model invalid | 1 | Cold/flu*+ |
| 1 or 2 times weekly (-/79) | Wired (-/16) | 1.80 (1.00-3.26) | Decile | |||
| 3 or 4 times weekly (-/27) | Wireless (-/13) | 1.61 (0.85-3.05) | ||||
| Most of the time (-/30) |
