Table 2 Sociodemographic and Health Factors Associated with Risk of violence in drug rehabilitation centers (N = 733)

 Age

0.98 (0.97, 1.00)

0.08

0.98 (0.96, 0.99)

0.03

 Female (Ref: male)

1.16 (0.85, 1.58)

0.36

 Married (Ref: not married)

0.96 (0.71, 1.31)

0.80

 Years of education completed

1.04 (0.99, 1.09)

0.16

 Formal source (Ref: no income)

1.16 (0.49, 2.74)

0.74

 Informal source (Ref: no income)

1.05 (0.43, 2.55)

0.92

 Homeless

1.43 (0.98, 2.07)

0.06

3.33 (1.21, 9.20)

0.02

 Lived in Tijuana whole life

1.32 (0.97, 1.81)

0.08

1.09 (.78, 1.53)

0.62

 Years lived in Tijuana

1.00 (0.99, 1.01)

0.49

 Age of first time use of illegal drug

1.02 (0.99, 1.06)

0.26

 Age of first injected drugs

1.00 (0.98, 1.03)

0.73

 Ever used heroin

1.05 (0.10, 11.68)

0.97

 Ever used cocaine

0.49 (0.35, 0.70)

0.01

0.64 (0.43, 0.95)

0.03

 Ever used crystal/methamphetamine

0.39 (0.25, 0.61)

0.01

0.48 (0.29, 0.79)

<0.01

 Ever stopped by law enforcement

0.57 (0.35, 0.94)

0.03

0.72 (0.43,1.21)

0.21

 Been told by law enforcement that would be required to go to rehabilitation

2.79 (1.05, 7.41)

0.04

3.61 (1.35, 9.64)

0.01

 Great or urgent need to get help for drug use

1.44 (1.06, 1.95)

0.02

1.61 (1.17, 2.22)

<0.01

 Ever received professional help for drug problem

0.61 (0.45–0.83)

0.01

0.67 (0.48, 0.93)

0.02

 Lifetime # of times received professional help for drug use (n = 417)

0.98 (0.95, 1.01)

0.14

 Ever enrolled in drug treatment

0.74 (0.38–1.44)

0.38

 # of times enrolled in drug rehabilitation center (n = 375)

0.98 (0.95, 1.01)

0.21