Estimated impact of control variables on intimate partner homicide in 46 US cities from 1979 to 2003
| Parameter | Intimate partner homicide | Firearm intimate partner homicide | ||||
| IRR | 95% CI | p Value | RR | 95% CI | p Value | |
| % Black | 0.98 | 0.91 to 1.06 | 1 | 0.95 | 0.86 to 1.05 | 1 |
| % married | 1.02 | 0.92 to 1.14 | 1 | 1.03 | 0.93 to 1.14 | 1 |
| % divorced | 1.07 | 0.92 to 1.24 | 1 | 1.10 | 0.94 to 1.28 | 1 |
| AFDC/TANF benefit* | 1.00 | 1.00 to 1.00 | 1 | 1.00 | 1.00 to 1.00 | 1 |
| Income per capita* | 1.00 | 1.00 to 1.00 | 0.328 | 1.00 | 1.00 to 1.00 | 1 |
| Unemployment rate | 1.03 | 0.98 to 1.07 | 0.928 | 1.07 | 1.01 to 1.13 | 0.096 |
| Educational ratio | 0.47 | 0.33 to 0.67 | <0.001 | 0.26 | 0.12 to 0.53 | <0.001 |
| Prevalence of firearm ownership | 1.45 | 0.87 to 2.43 | 0.624 | 1.44 | 0.69 to 2.99 | 1 |
| Adult, non-intimate homicide rate | 1.01 | 1.01 to 1.02 | <0.001 | 1.01 | 1.01 to 1.02 | <0.001 |
Data modelled by generalised estimating equations using a Poisson distribution, estimates of federal law variables, city and year fixed effects, linear time trend, and the interaction of city fixed effects with linear time trend not reported.
p Values adjusted using post-hoc Bonferroni correction for multiple hypotheses.
↵* Per capita income and AFDC/TANF benefits measured in 1983 dollars.
IRR, incidence rate ratio; AFDC, Aid to Families with Dependent Children; TANF, Temporary Assistance for Needy Families.