Table 1.
Demographics, symptoms and ICV of PTSD and control groups.
| PTSD | Control | Difference | P value | |
|---|---|---|---|---|
| N (%) | 1379 (39.5%) | 2192 (60.5%) | ||
| Female N (%) | 554 (40.4%) | 923 (42.2%) | χ2=1.02 (df = 1) | 0.31 |
| Age (years) | 36.0 ± 14.1 | 34.3 ± 15.5 | T = 3.35 (df = 3101) | P = 0.0008* |
| Age range (years) | 6‐82 | 6‐85 | ||
| PTSD severity | 49.8 ± 16.7 | 10.5 ± 12.8 | T = 64.91 (df = 2009) | <0.0001* |
| N of depression High/Low | 397/860 | 102/1852 | χ2 = 403.04 (df = 1) | <0.0001* |
| N of cohorts | 43 | 42 | ||
| N of scanners | 63 | 60 | ||
| ICV (mm3) | 1491977 ± 212659 | 1492371 ± 223097 | T = 0.05 (dfa = 2813.2) | P = 0.959 |
Data are reported as mean ± standard deviation.
df degree of freedom.
*:
Significant at P < 0.05 level.
a
Welch approximation to the degrees of freedom (df) is used.