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Chlamydia standardized rates per 1,000 population

Chlamydia standardized rates per 1,000 population

Chlamydia Rate per 1,000

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Data include all new laboratory confirmed Chlamydia cases reportable to the Regional Health Authority under the Public Health Act, Reportable Disease Regulations.

Rates are based on case counts per annum (calendar year) and represent laboratory confirmed cases by case status date. The rate is the total number of cases per 1000 population.

Incidence rates are comprised of the total number of new cases (numerator) divided by the total SHR covered population in the neighbourhood represented (denominator), expressed per 1,000 population. See Denominator Description below for definition of Covered Population. Rates are age and sex standardized using the Canadian 1991 population. Age/sex standardization is a method that adjusts for the age and sex distribution and allows meaningful comparisons between neighbourhoods with different demographics.

Method of Calculation

The number of people with Chlamydia with a valid postal code for a given Saskatoon neighbourhood, divided by the number of people in the covered population with valid postal codes for the Saskatoon neighbourhood multiplied by 1,000. Results were then age and sex standardized to the 1991 Canadian Census Population.


Neighbourhood rates based on case counts under five are suppressed. Standardized rates are based on case counts among residents of SHR, excluding those registered with First Nations and Indian Health (FNIH). Covered population include registered Indians. This means rates will be slightly under-estimated. Rates over time are sensitive to physician testing patterns but generally under-represent the true occurrence of infections.

Usage Considerations

High rates do not necessarily reflect significant differences from other neighbourhoods, but may be a function of low denominators. Confidence intervals are not presented here.