Table AIII

Estimated impact of control variables on intimate partner homicide in 46 US cities from 1979 to 2003

ParameterIntimate partner homicideFirearm intimate partner homicide
IRR95% CIp ValueRR95% CIp Value
% Black0.980.91 to 1.0610.950.86 to 1.051
% married1.020.92 to 1.1411.030.93 to 1.141
% divorced1.070.92 to 1.2411.100.94 to 1.281
AFDC/TANF benefit*1.001.00 to 1.0011.001.00 to 1.001
Income per capita*1.001.00 to 1.000.3281.001.00 to 1.001
Unemployment rate1.030.98 to 1.070.9281.071.01 to 1.130.096
Educational ratio0.470.33 to 0.67<0.0010.260.12 to 0.53<0.001
Prevalence of firearm ownership1.450.87 to 2.430.6241.440.69 to 2.991
Adult, non-intimate homicide rate1.011.01 to 1.02<0.0011.011.01 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.