Table 2.

Estimate of mean and mean change from baseline at 1- and 3-months follow-up from linear mixed model for repeated measures analysis to test initial efficacy of a 1-day virtual ACT workshop (n = 60 veterans).

Study phase	Mean	Change from Baseline
	(SEM)	Mean	95% CIa	p-valuea
OQ-45	Time effect F(2,109) = 3.30			0.041
Baseline	76.3 (4.0)	–
1 month	72.2 (4.0)	−4.1	(-9.7, 1.6)	0.189
3 months	69.6 (4.1)	−6.7	(-12.6, −0.7)	0.025
OQ-45 SD	Time effect F(2,110) = 4.67			0.011
Baseline	42.5 (2.3)	–
1 month	42.8 (2.3)	−2.5	(-5.4, 0.4)	0.106
3 months	40.3 (2.3)	−4.9	(-8.5, −1.3)	0.005
OQ-45 IR	Time effect F(2,110) = 1.77			0.175
Baseline	18.4 (0.9)
1 month	18.0 (0.9)	−0.4	(-1.7, 1.0)	0.743
3 months	17.0 (0.9)	−1.4	(-3.2, 0.4)	0.136
OQ-45 SR	Time effect F(2,106) = 0.46			0.635
Baseline	13.1 (0.7)
1 month	12.6 (0.7)	−0.5	(-1.8, 0.7)	0.514
3 months	12.7 (0.7)	−0.4	(-2.1, 1.2)	0.774
PCL-5	Time effect F(2,110) = 9.50			0.0002
Baseline	37.1 (2.7)
1 month	31.4 (2.7)	−5.8	(-10.1, −1.4)	0.007
3 months	28.6 (2.8)	−8.5	(-13.1, −4.0)	<0.0001
M2C-Q	Time effect F(2,108) = 4.34			0.015
Baseline	1.90 (0.13)
1 month	1.71 (0.13)	−0.19	(-0.39, 0.02)	0.074
3 months	1.63 (0.14)	−0.27	(-0.48, −0.05)	0.011
PROMIS MP	Time effect F(2,100) = 4.06			0.020
Baseline	42.9 (1.5)
1 month	45.8 (1.5)	2.9	(0.6, 5.3)	0.010
3 months	44.6 (1.5)	1.7	(-0.8, 4.2)	0.227
AAQ-II	Time effect F(2,110) = 2.67			0.073
Baseline	25.8 (1.6)
1 month	23.5 (1.6)	−2.4	(-5.3, 0.5)	0.124
3 months	23.0 (1.7)	−2.8	(-5.8, 0.2)	0.068

ACT = Acceptance and Commitment Therapy; OQ-45 = Outcome Questionnaire-45; SD = Symptom Distress Scale; IR = Interpersonal Relationship Scale; SR = Social Role Performance Scale; PCL-5 = PTSD Checklist-5; M2C-Q = Military to Civilian Questionnaire; PROMIS MP = PROMIS Meaning and Purpose Short Form; AAQ-II – Action and Acceptance Questionnaire-II.

*significant change at p < 0.05.

^aDunnett's adjustment applied to 95% CI and p-value.