Table 1.

Results of the quality analysis of papers. Table displays results from quality analysis, using WOE approach, of papers meeting the systematic review criteria.

Author, Year, and Title	A	B	C	D (Overall)
Densley, JA et al. 2015 We’ll show you gang’: The subterranean structuration of gang life in London	M	M	H	M
Hansen, K. 2003 Education and the Crime-Age Profile	M	L	M	L
Alleyne, E et al. 2014 Denying humanness to victims: How gang members justify violent behavior.	H	M	M	M
Smith, D. 2007 An investigation into causal links between victimization and offending in adolescents.	H	M	M	M
Nasr, IN et al. 2010 Gender inequality in the risk of violence: material deprivation is linked to higher risk for adolescent girls.	H	M	L	M
Hayden, C. 2010 Offending behaviour in care: is children’s residential care a ‘criminogenic’ environment?	H	M	M	M
Falshaw, L et al. 1997 Adverse childhood experiences and violent acts of young people in secure accommodation	H	M	M	M
Alleyne, E et al. 2016 Psychological and behavioural characteristics that distinguish street gang members in custody	H	M	M	M
Bailey, S et al. 2006 The social background and nature of “children” who perpetrate violent crimes: A UK perspective.	H	M	L	M
Wood, JL et al. 2017 Differentiating Gang Members, Gang Affiliates, and Violent Men on Their Psychiatric Morbidity and Traumatic Experiences.	H	H	M	H
Barlas, J et al. 2006 Weapons carrying in British teenagers: The role of personality, delinquency, sensational interests, and mating effort.	H	H	H	H
Briggs, D. 2010 ‘True stories from bare times on road’: Developing empowerment, identity and social capital among urban minority ethnic young people in London, UK.	H	M	M	M
Densley, J et al. 2011 Ganging up on gangs: Why the gang intervention industry needs an intervention.	H	H	H	H
Alleyne, E et al. 2010 Gang involvement: psychological and behavioral characteristics of gang members, peripheral youth, and nongang youth.	H	H	H	H