Table 4 Results of the logistic regression models by measured and self-reported exposure for children
Symptoms | Quartile | Prevalence N (%) | OR (95% CI)# | Prevalence N (%) | OR (95% CI)# |
|---|---|---|---|---|---|
Noon | Measured exposure during morning hours | > 5 minutes mobile phone use during morning hours* | |||
Headache | 1st | 65 (17.6) | 1.00 | 11 (36.7) | 2.33 (0.98 -5.54) |
| Â | 2nd | 58 (15.9) | 0.80 (0.52 -1.22) | Â | Â |
| Â | 3rd | 63 (17.3) | 1.14 (0.75 -1.73) | Â | Â |
| Â | 4th | 71 (19.2) | 1.05 (0.69 -1.62) | Â | Â |
Irritation | 1st | 54 (14.6) | 1.00 | 6 (20.0) | 0.87 (0.28 -2.68) |
| Â | 2nd | 51 (14.0) | 0.84 (0.53 -1.34) | Â | Â |
| Â | 3rd | 53 (14.5) | 0.98 (0.62 -1.56) | Â | Â |
| Â | 4th | 52 (14.1) | 0.98 (0.61 -1.57) | Â | Â |
Nervousness | 1st | 51 (13.8) | 1.00 | 3 (10.0) | 0.44 (0.10 -1.98) |
| Â | 2nd | 42 (11.5) | 1.47 (0.93 -2.32) | Â | Â |
| Â | 3rd | 43 (11.8) | 0.67 (0.44 -1.27) | Â | Â |
| Â | 4th | 37 (10.0) | 0.75 (0.44 -1.27) | Â | Â |
Dizziness | 1st | 25 (6.7) | 1.00 | 2 (6.7) | 0.73 (0.16 -3.32) |
| Â | 2nd | 28 (7.7) | 0.71 (0.38 -1.34) | Â | Â |
| Â | 3rd | 36 (9.8) | 1.27 (0.71 -2.27) | Â | Â |
| Â | 4th | 27 (7.3) | 1.10 (0.60 -2.01) | Â | Â |
Concentration problems | 1st | 72 (19.5) | 1.00 | 6 (20.0) | 0.84 (0.32 -2.19) |
| Â | 2nd | 67 (18.4) | 0.94 (0.63 -1.40) | Â | Â |
| Â | 3rd | 75 (20.5) | 1.02 (0.68 -1.53) | Â | Â |
| Â | 4th | 81 (21.9) | 0.86 (0.57 -1.30) | Â | Â |
Fatigue | 1st | 117 (31.8) | 1.00 | 12 (40.0) | 1.08 (0.50 -2.47) |
| Â | 2nd | 133 (36.4) | 1.24 (0.89 -1.72) | Â | Â |
| Â | 3rd | 145 (39.6) | 1.18 (0.84 -1.66) | Â | Â |
| Â | 4th | 128 (34.8) | 1.36 (0.96 -1.92) | Â | Â |
Evening | Measured exposure during afternoon hours | > 5 minutes mobile phone use during afternoon* | |||
Headache | 1st | 65 (17.2) | 1.00 | 11 (32.4) | 1.94 (0.85 -4.42) |
| Â | 2nd | 66 (18.0) | 0.83 (0.54 -1.28) | Â | Â |
| Â | 3rd | 65 (17.6) | 0.84 (0.53 -1.33) | Â | Â |
| Â | 4th | 63 (17.1) | 0.82 (0.51 -1.30) | Â | Â |
Irritation | 1st | 57 (15.4) | 1.00 | 10 (30.3) | 1.72 (0.76 -3.93) |
| Â | 2nd | 56 (15.3) | 1.14 (0.73 -1.79) | Â | Â |
| Â | 3rd | 74 (20.1) | 1.19 (0.74 -1.91) | Â | Â |
| Â | 4th | 73 (19.8) | 1.39 (0.87 -2.24) | Â | Â |
Nervousness | 1st | 56 (15.1) | 1.00 | 7 (20.6) | 1.30 (0.51 -3.33) |
| Â | 2nd | 56 (15.3) | 1.36 (0.85 -2.18) | Â | Â |
| Â | 3rd | 55 (14.9) | 1.36 (0.82 -2.24) | Â | Â |
| Â | 4th | 58 (15.7) | 1.57 (0.95 -2.62) | Â | Â |
Dizziness | 1st | 31 (8.4) | 1.00 | 5 (15.2) | 1.31 (0.42 -3.97) |
| Â | 2nd | 37 (10.1) | 0.81 (0.45 -1.44) | Â | Â |
| Â | 3rd | 30 (8.1) | 0.73 (0.39 -1.36) | Â | Â |
| Â | 4th | 34 (9.3) | 1.06 (0.58 -1.92) | Â | Â |
Concentration problems | 1st | 76 (20.6) | 1.00 | 13 (39.4) | 1.44 (0.66 -3.16) |
| Â | 2nd | 92 (25.2) | 1.26 (0.86 -1.86) | Â | Â |
| Â | 3rd | 95 (25.8) | 1.20 (0.79 -1.81) | Â | Â |
| Â | 4th | 98 (25.6) | 1.55 (1.02 -2.33) | Â | Â |
Fatigue | 1st | 211 (57.2) | 1.00 | 18 (54.6) | 0.80 (0.38 -1.70) |
| Â | 2nd | 215 (58.9) | 0.95 (0.68 -1.32) | Â | Â |
| Â | 3rd | 226 (61.3) | 0.94 (0.66 -1.34) | Â | Â |
| Â | 4th | 216 (59.0) | 0.99 (0.69 -1.42) | Â | Â |