Table 7 Associations between RF-EMF exposures and being ‘Tired at school’ (symptom)
Symptom | Symptom categories (N for unadjusted model/N for adjusted model) | Exposure | Exposure categories (N for unadjusted model/N for adjusted model) | Unadjusted OR (95% CI) for each exposure category | Adjusted OR (95% CI) for each exposure category | Confounders in model |
|---|---|---|---|---|---|---|
Tired at school | No, hardly ever (-//61) | Cordless calls >10 minutes weekly | 0 (-/60) | Model invalid | 1 | Woken by phone**+ |
1 or 2 weekly (-/153) | 1-2 (-/101) | 1.17 (0.81-1. 69) | Age- | |||
3 or 4 weekly (-/41) | 3-9 (-/80) | 0.73 (0.50-1.07) | Cold/flu | |||
Most days (-/64) | 10-120 ( -/78) | 0.90 (0.60-1.34) | ||||
Tired at school | No, hardly ever (-/73) | Minutes on cordless phone daily | 0-4 (-/137) | Model invalid | 1 | Woken by phone **+ |
1-2 times weekly (-/144) | 5-15 (-/100) | 0.82 (0.86-1.14) | Cold/flu*+ | |||
3+ times weekly (-/114) | 16-240 (-/94) | 0.79 (0.55-1.12) | Light out time | |||
Tired at school | No, hardly ever (-/74) | Cellphone calls >10 minutes weekly | 0 (-/270) | Model invalid | 1 | Woken by phone**+ |
1 or 2 times weekly (-/155) | 1-6 (-/65) | 1.26 (0.75-2.10) | Cold/flu+ | |||
3 or 4 times weekly (-/46) | 7-35 (-/12) | 0.72 (0.23-2.25) | Decile+ | |||
Most of the time (-/72) | ||||||
Tired at school | No (-/34) | Cordless phone frequency | Not exposed (-/26) | Model invalid | 1 | Cold/flu*+ |
1-4 days weekly (-/78) | ≤ 900 MHz (-/20) | 1.26 (0.59-2.70) | Light out time + | |||
Most days (-/30) | 1.8-1.9 GHz (-/25) | 1.92 (0.93-3.96) | Use phone headset | |||
2.4 GHz (-/53) | 1.01 (0.55-1.87) | Woken at night | ||||
5.8 GHz (-/18) | 1.79 (0.83-3.87) | TV in bedroom | ||||
Tired at school | No, hardly ever (35/32) | Cordless phone system | Not exposed (29/25) | 1 | 1 | Light out time + |
1-4 days weekly (75/71) | DECT (51/50) | 1.30 (0.73-2.33) | 1.09 (0.57-2.11) | Use phone headset | ||
Most days (27/26) | DSS (27/25) | 2.50 (1.30-4.80)* | 2.53 (1.21-5.31)* | Woken at night | ||
Analogue (30/29) | 1.51 (0.80-2.87) | 1.24 (0.60-2.58) | Cold/flu | |||
TV in bedroom | ||||||
Tired at school | No, hardly ever (-/75) | Cellphone headset | No (-/318) | Model invalid | 1 | Woken by phone**+ |
1 or 2 times weekly (-/155) | Wired (-/16) | 1.11 (0.42, 2.93) | Cold/flu*+ | |||
3 or 4 times weekly (-/47) | Wireless (-/13) | 1.38 (0.47, 4.04) | Decile+ | |||
Most days (-/70) | Light out time |