Efficacy of exposure in group settings for youth with posttraumatic stress symptoms

Table 2 Descriptives and test statistics between measurement time points for each exposure session

Session	T1		T2		T3		T1-T2			T1-T3			T2-T3			Total
Session	M (SD)	Md	M (SD)	Md	M (SD)	Md	Z	p	d	Z	p	d	Z	p	d	Χ²(2)	p
Session 1 (n = 46)	4.10 (2.85)	4	4.33 (2.48)	5	3.68 (2.47)	3	− 0.94	0.345	0.1	− 1.97	0.048	0.27	− 2.98	0.003	0.39	13.08	≤ .001
Session 2^a (n = 41)	3.34 (2.83)	3	6.22 (2.26)	7	4.0 (2.52)	4.5	− 5.25	≤ .001	0.65	− 1.99	0.047	0.23	− 4.95	≤ .001	0.53	51.25	≤ .001
Session 3^a (n = 40)	3.35 (2.58)	3	7.92 (2.18)	9	4.3 (2.34)	4.5	− 5.39	≤ .001	0.87	− 1.74	0.083	0.33	− 5.53	≤ .001	0.7	63.88	≤ .001
Session 4^a (n = 35)	3.51 (3.01)	3	3.49 (2.41)	4	2.54 (2.57)	2	− 0.03	0.977	0.01	− 3.23	≤ 0.001	0.38	− 2.37	0.018	0.35	15.61	≤ .001
Session 5^a (n = 36)	2.86 (2.29)	3	4.36 (2.13)	4	2.67 (2.10)	2	− 3.96	≤ .001	0.55	− 0.72	0.472	0.07	− 5.01	≤ .001	0.45	43.39	≤ .001
Session 6 (n = 36)	2.25 (2.05)	2.5	2.50 (2.26)	2	1.36 (1.38)	1	− 1.21	0.226	0.15	− 3.42	0.001	0.4	− 4.19	0.001	0.4	23.76	≤ .001

T1 = at the beginning of the session, T2 = during the session; T3 = at the end of the session
^aexposure sessions

ISSN: 1753-2000