Table 3. Symptoms Reported by 76 Participants From Random Sampling.
| Symptoms reported | Participants, No. (%)a | |
|---|---|---|
| Yes | No | |
| Ear ringing | 44 (58) | 32 (42) |
| Head injury or concussion | 26 (34) | 50 (66) |
| Deafness | 25 (33) | 51 (67) |
| Memory problems | 24 (32) | 52 (68) |
| Backache | 21 (28) | 55 (72) |
| Sleep problems | 20 (26) | 56 (74) |
| Concentration | 17 (22) | 59 (78) |
| Fatigue | 14 (18) | 62 (82) |
| Irritability | 13 (17) | 63 (83) |
| Headaches | 11 (14) | 65 (86) |
| Depression, anxiety and/or stress | 11 (14) | 65 (86) |
| General medical problems | 10 (13) | 66 (87) |
| Nose, sinus, and/or throat problems | 10 (13) | 66 (87) |
| Lightheadedness | 10 (13) | 66 (87) |
a
Of 106 total participants, 30 were randomly sampled; the table shows response data from the remaining 76 participants after random sampling.