Table 3.
Individual Item Analysis of the Neurobehavioral Symptom Inventory across Blast Exposure Groups*
| Blast Group | 0 | 1 | 2 | 3 | 4 to 10 | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| NSI Item | Mean | SD | Mean | SD | Mean | SD | Mean | SD | Mean | SD | p | η2 |
| 1. Feeling dizzy | 1.03 | 1.07 | 0.72 | 0.86 | 0.87 | 0.95 | 1.18 | 1.08 | 1.28 | 0.91 | <0.001 | 0.044 |
| 2. Loss of balance | 0.98 | 1.07 | 0.66 | 0.90 | 0.96 | 0.96 | 1.07 | 1.06 | 1.41 | 1.02 | <0.001 | 0.058 |
| 3. Poor coordination, clumsy | 0.92 | 0.95 | 0.75 | 0.91 | 0.92 | 0.92 | 1.21 | 1.07 | 1.41 | 1.07 | <0.001 | 0.064 |
| 4. Headaches | 2.22 | 1.23 | 1.69 | 1.20 | 1.71 | 1.28 | 2.02 | 1.23 | 2.21 | 1.26 | 0.001 | 0.035 |
| 5. Nausea | 0.73 | 0.85 | 0.49 | 0.82 | 0.66 | 0.94 | 0.84 | 1.13 | 1.10 | 1.02 | <0.001 | 0.043 |
| 6. Vision problems, blurring, trouble seeing | 0.83 | 1.02 | 0.58 | 0.84 | 0.97 | 1.12 | 1.14 | 1.17 | 1.20 | 1.21 | <0.001 | 0.042 |
| 7. Sensitivity to light | 1.25 | 1.20 | 0.85 | 1.08 | 1.02 | 1.12 | 1.36 | 1.31 | 1.57 | 1.20 | <0.001 | 0.049 |
| 8. Hearing difficulty | 1.10 | 0.99 | 1.48 | 1.16 | 1.34 | 1.19 | 1.53 | 1.17 | 1.84 | 1.08 | <0.001 | 0.038 |
| 9. Sensitivity to noise | 1.22 | 1.20 | 1.05 | 1.05 | 1.20 | 1.20 | 1.65 | 1.31 | 1.84 | 1.20 | <0.001 | 0.066 |
| 10. Numbness or tingling in parts of my body | 1.12 | 1.04 | 0.88 | 1.01 | 1.12 | 1.20 | 1.05 | 1.13 | 1.23 | 1.20 | 0.309 | 0.009 |
| 11. Change in taste and/or smell | 0.46 | 0.77 | 0.24 | 0.65 | 0.51 | 0.88 | 0.42 | 0.81 | 0.52 | 0.94 | 0.099 | 0.014 |
| 12. Increased or decreased appetite | 1.12 | 1.10 | 0.80 | 1.00 | 1.04 | 1.07 | 1.18 | 1.08 | 1.24 | 1.22 | 0.016 | 0.022 |
| 13. Poor concentration, cant pay attention | 1.75 | 1.21 | 1.48 | 1.18 | 1.55 | 1.31 | 1.98 | 1.18 | 2.15 | 1.15 | <0.001 | 0.054 |
| 14. Forgetfulness, cant remember things | 1.86 | 1.20 | 1.66 | 1.18 | 1.95 | 1.26 | 2.20 | 1.24 | 2.46 | 1.13 | <0.001 | 0.057 |
| 15. Difficulty making decisions | 1.19 | 1.12 | 0.92 | 1.12 | 1.05 | 1.19 | 1.36 | 1.23 | 1.57 | 1.24 | <0.001 | 0.044 |
| 16. Slowed thinking | 1.46 | 1.22 | 1.06 | 1.16 | 1.29 | 1.21 | 1.67 | 1.31 | 1.19 | 1.25 | <0.001 | 0.053 |
| 17. Fatigue, loss of energy | 1.46 | 1.19 | 1.06 | 1.13 | 1.29 | 1.20 | 1.67 | 1.27 | 1.82 | 1.22 | <0.001 | 0.048 |
| 18. Difficulty falling or staying asleep | 2.37 | 1.19 | 1.82 | 1.30 | 2.21 | 1.32 | 2.34 | 1.28 | 2.55 | 1.28 | <0.001 | 0.038 |
| 19. Feeling anxious or tense | 1.41 | 1.35 | 1.22 | 1.23 | 1.44 | 1.28 | 1.82 | 1.32 | 1.76 | 1.34 | <0.001 | 0.037 |
| 20. Feeling depressed or sad | 1.14 | 1.33 | 0.88 | 1.11 | 1.01 | 1.11 | 1.21 | 1.24 | 1.17 | 1.22 | 0.087 | 0.015 |
| 21. Easily annoyed/irritability | 1.81 | 1.35 | 1.68 | 1.19 | 1.72 | 1.29 | 2.09 | 1.34 | 2.05 | 1.26 | 0.005 | 0.027 |
| 22. Poor frustration tolerance | 1.53 | 1.37 | 1.23 | 1.24 | 1.36 | 1.31 | 1.69 | 1.34 | 1.70 | 1.37 | 0.005 | 0.027 |
*
Comparisons were controlled for age, time since injury, deployment number, and loss of consciousness.
NSI, Neurobehavioral Symptom Inventory; SD, standard deviation.