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Table 1 Negative binomial results, full and final models, Vancouver

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

 

Estimated parameter

Std. error

Relative risk ratio

Full model

 Bylaw

− 1.781

0.729

0.168**

 Bylaw trend

− 0.112

0.081

0.894

 Month

− 0.082

0.153

0.921

 Month-squared

0.002

0.012

1.002

 Number of days

0.262

0.151

1.300*

 Trend

0.037

0.024

1.038

 Trend-squared

0.000

0.000

1.000

Final model

 Bylaw

− 2.829

0.613

0.059***

 Trend

0.026

0.003

1.026***

  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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