Table 2.

Predicted DSM-IV post-traumatic stress disorder (PTSD) severity means and standard errors as measured by the PTSD Symptom Scale Self-Report (PSS-SR) at major assessment points for each treatment condition by depression severity at baseline.

	SNT (n = 33)			SSC (n = 38)			SCNT (n = 33)			Between-group d at 6 month FU
	M	SE	Within-group d pre-6 month FU	M	SE	Within-group d pre-6 month FU	M	SE	Within-group d pre-6 month FU	SNT vs SSC	SNT vs SCNT	SSC vs SCNT
Severe depression
Baseline	48.37	2.50		50.02	2.48		48.51	2.38
Mid-treatment	34.89	4.39		21.02	4.18		37.30	3.76
Post-treatment	26.10	4.95		13.50	4.67		27.80	4.18
3 month FU	18.11	5.40		19.64	5.19		21.12	4.61
6 month FU	12.77	6.89		23.79	6.65		30.25	5.72
			2.46			1.82			1.26	0.29	0.46	0.17
Moderate depression
Baseline	36.71	2.11		38.37	1.73		36.86	2.07
Mid-treatment	25.38	3.19		24.67	2.54		26.52	3.22
Post-treatment	15.92	3.58		20.90	2.87		18.34	3.73
3 month FU	6.85	4.10		22.42	3.19		12.35	4.50
6 month FU	6.62	5.75		20.59	4.09		17.86	5.44
			2.60			1.54			1.64	0.47	0.38	0.09
Minimal depression
Baseline	29.07	2.31		30.73	2.50		29.22	2.45
Mid-treatment	21.78	3.43		19.31	4.57		21.52	4.17
Post-treatment	15.60	3.79		16.64	5.26		18.84	4.76
3 month FU	9.55	4.02		18.42	5.97		17.89	5.87
6 month FU	9.22	5.06		15.89	7.50		13.70	7.55
			1.39			1.04			1.09	0.17	0.11	0.05

SNT, STAIR plus Narrative Therapy; SSC, STAIR plus Supportive Counseling; SCNT, Supportive Counseling plus Narrative Therapy; d, Cohen’s d, where within-group effect sizes were calculated as the standardized difference of the predicted PTSD severity means at baseline and the 6 month follow-up (FU), and the standardization was based on the observed pooled standard deviation of the three treatment conditions at baseline. The pooled standard deviation of PTSD severity at baseline was 14.28.