Volume 10, Number 10—October 2004
Dispatch
Campylobacteriosis, Eastern Townships, Québec
Table 1
Incidence rates of campylobacteriosis in each county in the Eastern Townships with crude and age-stratified relative risk compared with incidence rates in the other counties in the region
County | No. of cases | Total population | Incidence rate per 100,000 | Crude RR | RR stratified for agea | p valueb |
---|---|---|---|---|---|---|
Asbestos | 17 | 14,975 | 113.5 | 2.23 | 2.37 | 0.0001 |
Val St-François | 23 | 28,809 | 79.8 | 1.48 | 1.33 | 0.04 |
Sherbrooke | 85 | 143,792 | 59.1 | 1.09 | 1.14 | NS |
Coaticook | 9 | 16,444 | 54.7 | 0.97 | 0.85 | NS |
Memphrémagog | 16 | 41,785 | 38.3 | 0.64 | 0.79 | NS |
Haut St-François | 10 | 22,358 | 44.7 | 0.78 | 0.74 | NS |
Granit | 4 | 21,905 | NDc | NDc | NDc | NDc |
aThe relative risk (RR) represents the incidence rate of campylobacteriosis in one county compared to the incidence rate in the other counties taken as a whole, before (crude RR) and after stratification for age (stratified RR).
bThe p values apply to the stratified relative risks.
cRates not calculated for County of Granit because of different case ascertainment process used there; see text for details.