Table 5.

Summary Results for Brief Worksite Interventions for 7 Outcomes at Follow-up^*

	PTSD Diagnosis	Depression Diagnosis	Alcohol Dependence	Binge Drinking	Mean PTSD Symptom Level	Mean Depression Symptom Level	Mean Anxiety Symptom Level
Significance level	NS	p < .05	p < .01	p < .05	p < .05	p < .05	p < .10
Impact of treatment vs. no treatment**	-	7.2%	4.8%	5.5%	.8	1.8	1.4

^*For additional information, see: Boscarino, JA, Adams, RE, Foa, EB, Landrigan, PJ. (2006). A propensity score analysis of brief worksite crisis interventions after the World Trade Center disaster: Implications for intervention and research. Medical Care, 44, 454−462.

^**As an example of the brief treatment outcome impact, the results for depression suggest that the prevalence of depression was about 7% lower among treated cases at follow-up compared to matched untreated cases. Likewise, treated cases had lower mean depression symptom scores by about 2 points compared to matched untreated cases.