. Author manuscript; available in PMC: 2017 Sep 7.

Published in final edited form as: Acad Emerg Med. 2016 Sep 7;23(9):1061–1070. doi: 10.1111/acem.13021

Table 3.

Zero Inflated Poisson (ZIP) regression analyses examining the efficacy of the therapist brief intervention (versus the EUC group) on the extent of violence victimization, aggression and self-efficacy at the 2-month follow-up

	IRR^# (95% CI) Frequency	AOR^## (95% CI) Prevalence
Any Violent Victimization
Baseline victimization	1.02 (1.02, 1.03)^***	0.87 (0.83, 0.91)^***
Therapist BI	1.02 (0.89, 1.16)	1.06 (0.66, 1.70)
Any Violent Aggression
Baseline aggression	1.04 (1.03, 1.04)^***	0.91 (0.88,0.94)^***
Therapist BI	0.87 (0.76, 0.99)^*	0.78 (0.49, 1.24)
Self-Efficacy for Avoiding fighting^###
Baseline self-efficacy	1.05 (1.04, 1.05)^***	----
Therapist BI	1.09 (1.02, 1.15)^**	----

IRR = Incident Rate Ratio; IRR values >1 indicate variables associated positively with the outcome of interest and values <1.0 indicate variables associated negatively with the outcome of interest.

^##

AOR: adjusted odds ratio.

^###

Self-efficacy for avoiding fighting was a Poisson regression model Significance levels:

< 0.05,

^**

<0.01,

^***

<0.001