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Table 2 Characteristics of non-randomized studies examining the effect of cognitive behavior group therapy

From: Cognitive behavioural group therapy for male perpetrators of intimate partner violence: a systematic review

Study, year, country Setting Population
(N, mean age)
Intervention Control condition Outcome definition Length of follow-up Results: primary outcome
Haggård et al. [31], 2017, Sweden Prison and probation offices Consecutive sample of male IPV perpetrators:
(N = 792, mean age 39.55 years)
Manual-based group program for male perpetrators (IDAP), including a pro-feminist psychoeducational approach Concomitant IPV offender controls
who did not enter IDAP
Any new convictions for any violent recidivism and IPV during the follow up time From time of recruitment unto study (2004–2007) until March 2, 2011. Mean time at risk, 4.6 years 19% (N = 65) of IDAP participants and 19% (N = 84) controls recidivated in violence against a partner or former partner
Boira et a. [32], 2013, Spain Setting unclear. Treatment delivered by psychologists specialized in intimate partner violence Male perpetrators convicted for IPV and court ordered to treatment
(N = 62, mean age 39.70 years)
Three treatment modalities:
1. Structured group
2. Unstructured group (open group format)
3. Individual therapy
Waiting list Police reports on new intimate partner violence 18 months 6.4% of the participants across the interventions were reported to the police for new intimate partner violence
  1. CBT Cognitive Behavioural Therapy, IDAP Integrated Domestic Abuse Program, IPV Intimate Partner Violence