Table A10.
Mean time in years since TBI of participants with and without neuropsychiatric symptoms and statistical significance (t-test) of differences between groups.
| Symptoms | Symptoms Present | Symptoms Absent | t-Test Parameters | |||||
|---|---|---|---|---|---|---|---|---|
| M (SD) | n | M (SD) | n | t | df | p | d | |
| Cognitive Problems after TBI | 4.21 (2.69) | 77 | 4.79 (2.89) | 218 | 1.60 | 142.54 | 0.112 | 0.21 |
| Mild to Severe Anxiety | 4.21 (2.65) | 85 | 4.86 (2.90) | 208 | 1.85 | 167.03 | 0.066 | 0.23 |
| Mild to Severe Depression | 4.22 (2.83) | 106 | 4.93 (2.83) | 187 | 2.06 | 215.38 | 0.040 * | 0.25 |
| Post-concussion Symptoms | 3.76 (2.59) | 34 | 4.90 (2.82) | 223 | 2.35 | 44.02 | 0.023 * | 0.41 |
Note. Post-concussion symptoms refer to a PCSI score that is one SD above the respective age average (see “Instrument” section). M = mean time since TBI in years, SD = standard deviation, df = degrees of freedom, t = t-value, p = p-value (* = p < 0.05), d = Cohen’s d.