Incidence of hospitalised cases of dog-bite injuries in the preimplementation and postimplementation period of BSL in the province of Manitoba
| Preimplementation period of BSL* | Postimplementation period of BSL | p Value of difference in incidence between preimplementation and postimplementation periods | |||
| Total number | Incidence (95% CI†) per 100 000 person-years | Total number | Incidence (95% CI†) per 100 000 person-years | ||
| All Manitoba jurisdictions | 507‡ | 3.47 (3.17 to 3.77)§ | 331 | 2.84 (2.53 to 3.15)§ | 0.005 |
| All jurisdictions that did not implement BSL in the years 1984–2006 | 363 | 3.62 (3.25 to 3.99)¶ ** | NA | NA | NA |
| City of Brandon | 24 | 2.50 (1.61 to 3.72)†† ‡‡ | NA | NA | NA |
| Town of Flin Flon | 7 | 4.24 (1.70 to 8.73)§§ ¶¶ | NA | NA | NA |
| All jurisdictions that implemented BSL sometime during years 1984–2006*** | 144 | 3.14 (2.65 to 3.69)¶ | 331 | 2.84 (2.53 to 3.15)** | 0.319 |
| City of Winnipeg | 110 | 2.93 (2.41 to 3.53)†† | 307 | 2.81 (2.49 to 3.12)‡‡ | 0.697 |
| The Pas | 12 | 6.21 (3.21 to 10.85)§§ | 0 | 0.00 (0.00 to 22.30)¶¶ | 0.999 |
↵* The entire study period (1984–2006) is considered as pre-BSL implementation period for all jurisdictions that did not implement BSL during our study period.
↵† 95% Poisson CI.
↵‡ Includes 363 hospitalisations from jurisdictions with no BSL and 144 hospitalisations pre-BSL implementations from jurisdictions with BSL.
↵§ Percentage change in incidence=−18.1%.
↵¶ Different at p value=0.145.
↵** Different at p value=0.001 and percentage change in incidence=−21.5%.
↵†† Different at p value=0.477.
↵‡‡ Different at p value=0.581.
↵§§ Different at p value=0.422.
↵¶¶ Different at p value=0.999.
↵*** Includes 16 jurisdictions with ‘pit-bull’ specific bans listed in table 1.
BSL, breed-specific legislation.