Subgroup characteristics defined by their working memory test z scores (LNS <1 or ≥1) and time since injury (<2 weeks or 2–4 weeks)a
| LNS <1 | LNS ≥1 | |||||
|---|---|---|---|---|---|---|
| MTBI (<2 Weeks) | MTBI (2–4 Weeks) | HC | MTBI (<2 Weeks) | MTBI (2–4 Weeks) | HC | |
| No. | 5 | 10 | 9 | 3 | 1 | 11 |
| Age | 31 ± 6 | 31 ± 9 | 31 ± 8 | 25 ± 3 | 31 | 35 ± 12 |
| LNS | −0.13 ± 0.51 | 0.07 ± 0.41 | 0.07 ± 0.32 | 1.55 ± 0.39 | 2 | 1.82 ± 0.62 |
↵a Data are means unless otherwise indicated.