Results from ordinary least squares regression on the percentage of a city's crime guns that were originally purchased from in-state gun dealers
| Model 1 | Model 2 | |||||
|---|---|---|---|---|---|---|
| Explanatory variables | β (SE) | Standardized β | Significance | β (SE) | Standardized β | Significance |
| Category A v C state gun sales laws | −48.5 (6.6) | −0.886 | <0.001 | −37.1 (5.9) | −0.678 | <0.001 |
| Category B v C state gun sales laws | −12.8 (5.8) | −0.261 | 0.039 | −4.3 (5.0) | −0.087 | 0.402 |
| Ratio of population within 100 mile radius living outside state border in category C state | −19.9 (7.5) | −0.239 | 0.016 | −17.4 (5.8) | −0.208 | 0.008 |
| Ratio of annual in-migration to total state population | −0.413 (2.6) | −0.019 | 0.876 | −0.965 (2.0) | −0.045 | 0.637 |
| % Of guns recovered from drug crimes | 0.548 (0.32) | 0.155 | 0.100 | 0.114 (0.27) | 0.032 | 0.676 |
| Proxy for state prevalence of gun ownership | 0.682 (0.18) | 0.377 | 0.001 | |||
| Model statistics | R2 = 0.85 | Adjusted R2 = 0.82 | R2 = 0.92 | Adjusted R2 = 0.89 | ||