Table 2. Principal component loading of symptom scores.
| Post-traumatic Headache/Migraine | Dizziness with Mild Cognitive Impairment | Emotional Lability | Fogginess and Neck Pain | Nausea | |
|---|---|---|---|---|---|
| Sensitivity to light | 0.7949 | ||||
| Headache | 0.7323 | ||||
| Sensitivity to noise | 0.6691 | ||||
| “Don’t feel right” | 0.6293 | ||||
| Pressure in head | 0.6261 | ||||
| Feeling slowed down | 0.5804 | ||||
| Drowsiness | 0.5783 | ||||
| Fatigue or low energy | 0.5641 | ||||
| Blurred vision | 0.7836 | ||||
| Confusion | 0.7565 | ||||
| Difficulty remembering | 0.6564 | ||||
| Balance problems | 0.6033 | ||||
| Difficulty concentrating | 0.5820 | ||||
| Dizziness | 0.5773 | ||||
| More emotional than usual | 0.7925 | ||||
| Irritability | 0.7628 | ||||
| Trouble falling asleep | 0.7576 | ||||
| Nervous or anxious | 0.6982 | ||||
| Sadness | 0.6763 | ||||
| Neck Pain | 0.7937 | ||||
| Feeling like “in a fog” | 0.5991 | ||||
| Nausea or vomiting | 0.8569 |