Table 2.
Proportions of Participants Reporting Central Nervous System Symptoms
| Case (n = 534) | Control (n = 356) | p | Probable TBIa(n = 265) | No probable TBIa(n = 269) | p | |
|---|---|---|---|---|---|---|
| Headaches | 476 (89) | 311 (87) | 0.416 | 242 (91) | 234 (87) | 0.108 |
| Memory loss | 213 (40) | 58 (16) | <0.001 | 126 (48) | 87 (32) | <0.001 |
| Blacking out | 122 (23) | 33 (9) | <0.001 | 80 (30) | 42 (16) | <0.001 |
| Ears ringing | 224 (42) | 86 (24) | <0.001 | 132 (50) | 92 (34) | <0.001 |
| Dizzy spells | 320 (60) | 133 (37) | <0.001 | 173 (65) | 147 (55) | 0.012 |
| Seizures | 32 (6) | 6 (2) | 0.002 | 17 (6) | 15 (6) | 0.683 |
| Vision problems | 261 (49) | 116 (33) | <0.001 | 150 (57) | 111 (41) | <0.001 |
| Hearing problems | 111 (21) | 29 (8) | <0.001 | 69 (26) | 42 (16) | 0.003 |
| Difficulty concentrating | 290 (54) | 81 (23) | <0.001 | 167 (63) | 123 (46) | <0.001 |
Values are presented as n (%). n = 890, participants with complete MAPSAIS CNS data.
a
Among cases only.
CNS, central nervous system.