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. 2020 Sep 30;18(Suppl 1):19. doi: 10.1186/s12963-020-00222-3

Table 2.

Variables associated with rates of violent firearm death in the federation units of Brazil (coefficients of the multiple linear regression final model)

Model Unstandardized coefficients Standardized coefficients t Sig. 95% confidence interval for B Collinearity statistics R square (adjusted) Durbin-Watson ANOVA Kolmogorov-Smirnov Z (p value)
B Std error Beta Lower bound Upper bound Tolerance VIF
Dependent variable: all firearm injuries in the vulnerable subgroup (women, children, elderly) (2005-2016)
 (Constant) 4.967 0.253 19.654 < 0.001 4.465 5.469
 Composite indexa −16.877 5.607 −0.297 −3.010 < 0.001 −28.005 −5.750 0.946 1.057
 SDI high −0.73802 0.326 −0.223 −2.266 0.030 −1.385 −0.092 0.946 1.057 0.107 (0.089) 1.689 0.004 0.855 (0.458)
Dependent variable: unintentional firearm injuries (2013-2016)
 (Constant) 1.048 0.240 4.374 < 0.001 0.572 1.523
 Voluntary return of firearms −0.011 0.004 −0.268 −2.719 0.008 −0.019 −0.003 0.891 1.122
 SDI −0.895 0.393 −0.224 −2.276 0.025 −1.675 −0.115 0.891 1.122 0.161 (0.144) 2.181 0.000 1.262 (0.083)
Dependent variable: all firearms injuries (2013-2016)
 (Constant) 52.057 9.805 5.309 < 0.001 32.599 71.515
 SDI −42.267 15.631 −0.264 −2.704 0.008 −73.286 −11.248 1.000 1.000 0.069 (0.060) 2.238 0.008 0.812 (0.524)
Dependent variable: physical violence by firearm (2013-2016)
 (Constant) 51.290 9.931 5.164 < 0.001 31.581 70.998
 SDI −42.928 15.832 −0.264 −2.711 0.008 −74.347 −11.510 1.000 1.000 0.070 (0.060) 2.236 0.008 0.932 (0.350)

a[= 1/(voluntary return of firearms+illegal carrying of firearms)]