Table 2.

PCL-5 aggregated mean ($\overline{x}$) item scores for the PCL-5 (n = 1).

PCL-5 question	T1–T2	T2–T3	T1–T3	Aggregate $\overline{x}$ [(T1–T2–T3)/3]	↑ $\overline{x}$ score	↓ $\overline{x}$ score	No change in $\overline{x}$ score
1	−1	0	−1	−0.667	X
2	−1	2	1	0.667		X
3	3	0	3	2		X
4	1	1	2	2		X
5	1	0	1	0.667		X
6	2	1	3	2		X
7	2	0	2	0.667		X
8	0	1	1	0.667		X
9	1	0	1	0.667		X
10	1	1	0	0			X
11	0	1	1	0.667		X
12	1	−2	−1	−0.667	X
13	2	−2	0	0			X
14	0	0	0	0			X
15	1	−1	0	0			X
16	1	0	1	0.667		X
17	0	1	1	0.667		X
18	0	0	0	0			X
19	0	0	0	0			X
20	−1	1	0	0			X

Table key: T1 = week 1 (pretest), T2 = week 2 (midpoint), T3 = week 4 (posttest), $\overline{x}$ = mean, ↑ = increase, ↓ = decrease, X = indicated changed.