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Table 4 Negative binomial results, full and final models, Interior

From: An evaluation of bylaw and policy changes on pharmacy robberies in British Columbia

 

Estimated parameter

Std. error

Relative risk ratio

Full model

 Bylaw

0.039

1.279

1.041

 Bylaw trend

− 0.226

0.121

0.798*

 Month

− 0.331

0.227

0.718

 Month-squared

0.021

0.018

1.021

 Number of days

− 0.092

0.264

0.912

 Trend

0.109

0.039

1.115***

 Trend-squared

− 0.001

0.001

0.999**

Final model

 Bylaw trend

− 0.211

0.128

0.810*

 Month

− 0.079

0.046

0.924*

 Trend

0.109

0.036

1.116***

 Trend-squared

− 0.001

0.001

0.999***

  1. Policy change variables (Bylaw and Bylaw trend), seasonality variables (Month and Month-squared), and overall trend variables (Trend and Trend-squared)
  2. *p < 0.10; **p < 0.05; ***p < 0.01
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Crime Science

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