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. 2018 Feb 5;183(5-6):e223–e231. doi: 10.1093/milmed/usx071

Table III.

Mean Baseline and Post-test Scores on PTSD and Other Measures (N = 18)

Measure Baseline Post Change t-Test (p-value) Effect Sizea
Mean (SD) Mean (SD) Mean (SD)
PCL-M total score 47.7 (15.0) 30.1 (8.4) 17.6 (9.1) 8.2 (<0.001) 1.93
 Hyperarousal 15.2 (3.9) 9.1 (1.9) 6.1 (2.8) 9.2 (<0.001) 2.17
 Re-experiencing 12.8 (6.1) 7.8 (2.9) 5.0 (4.1) 5.2 (<0.001) 1.23
 Avoidance 19.2 (6.3) 13.1 (4.4) 6.2 (3.3) 7.9 (<0.001) 1.86
PSQI 13.0 (4.8) 9.7 (3.9) 3.3 (3.0) 4.6 (<0.001) 1.08
PHQ-8 11.9 (6.5) 6.8 (4.3) 5.1 (3.9) 5.6 (<0.001) 1.32
BAI 20.3 (12.8) 11.2 (9.7) 9.1 (6.8) 5.7 (<0.001) 1.32
MAAS 47.9 (19.2) 60.0 (13.7) −12.1 (12.1) −4.2 (0.001) −1.00

aEffect size was estimated by dividing the mean of the change between baseline and post-test score by the SD of the mean change.

Numbers in italics are the p-values.