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Table 2 Summary of risk factors included studies. Displays which risk factors - associated with youth violence - are described in papers and whether there is a positive, no, or unclear association. For papers including a quantitative analysis, risk factors with statistically significant results were categorised as positively associated. Whereas for qualitative studies, risk factors mentioned within interviews or literature reviews were identified as positively associated. The design of each study is further highlighted within the table. The count of studies mentioning each risk factor was used to determine the relevance for discussion

From: Risk factors associated with knife-crime in United Kingdom among young people aged 10–24 years: a systematic review

Individual risk factors

Positive association

No association

Unclear association

Aged between 10 and 24 years

6 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2014;

Barlas et al, 2006;

Falshaw et al, 1997;

Hayden et al, 2010;

Qualitative

Densley et al, 2015;

0 studies

0 studies

Gender

3 studies

Quantitative

Males

Falshaw et al, 1997;

Nasr et al, 2010;

Females

Hayden et al, 2010;

3 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2014;

Qualitative

Briggs et al, 2009

1 study

Quantitative

Barlas et al, 2006;

Ethnicity

1 study

Quantitative

Smith I et al, 2007;

3 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2016;

Smith D et al, 2007;

0 studies

Education

3 studies

Quantitative

Bailey et al, 2001;

Clement et al, 2010;

Hayden et al, 2010;

0 studies

1 study

Qualitative

Briggs et al, 2010

Adverse childhood experiences

7 studies

Quantitative

Alleyne et al, 2010;

Bailey et al, 2001;

Falshaw et al, 1997;

Smith D et al, 2007;

Smith I et al, 2007;

Wood J et al, 2017;

Qualitative

Briggs et al, 2010;

0 studies

0 studies

Poor mental health

3 studies

Quantitative

Bailey et al, 2001;

Barlas et al, 2006;

Wood J et al, 2017;

0 studies

0 studies

Previous victimisation

3 studies

Quantitative

Barlas et al, 2006;

Smith D et al, 2007;

Wood J et al, 2017;

0 studies

0 studies

History of violent behaviour

Not identified

Not identified

Not identified

Relationship risk factors

Positive association

No association

Unclear association

Poor parental attachment

2 studies

Quantitative

Nasr et al, 2010;

Smith D et al, 2007;

0 studies

0 studies

High-risk peer groups

7 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2016;

Barlas et al, 2006;

Falshaw et al, 1997;

Hayden et al, 2010;

Smith D et al, 2007;

Qualitative

Briggs et al, 2010;

0 studies

0 studies

Marital Discord

Not identified

Not identified

Not identified

Low socioeconomic household status

Not identified

Not identified

Not identified

Community risk factors

Positive association

No association

Unclear association

Deprivation/high rates of unemployment

6 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2016;

Nasr et al, 2010:

Wood R, et al 2010;

Qualitative

Briggs et al, 2010;

Densley et al, 2015;

0 studies

0 studies

High crime levels

1 study

Quantitative

Wood R, et al 2010;

0 studies

0 studies

Low social cohesion

1 study

Quantitative

Barlas et al, 2006;

0 studies

0 studies

High residential mobility

Not identified

Not identified

Not identified

Societal risk factors

Positive association

No association

Unclear association

Economic inequality

3 studies

Quantitative

Nasr et al, 2010;

Wood R, et al 2010;

Qualitative

Densley et al, 2015;

0 studies

0 studies

Marginalisation/

stigma/

discrimination

4 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2016;

Qualitative

Densley et al, 2011;

Densley et al, 2015;

0 studies

0 studies

Perception of status and masculinity

6 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2014;

Alleyne et al, 2016;

Barlas et al, 2006;

Clement et al, 2010;

Qualitative

Briggs et al, 2010;

0 studies

0 studies

Relationship with police

3 studies

Quantitative

Alleyne et al, 2010;

Alleyne et al, 2016;

Qualitative

Densley et al, 2010;

0 studies

0 studies

Rapid Social Change

Not identified

Not identified

Not identified

Cultural norms

Not identified

Not identified

Not identified

Gender Inequalities

Not identified

Not identified

Not identified