MHLU - Health Status Resource

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Tuberculosis (TB) – active and latent infections

Active tuberculosis (TB) infection means that TB bacteria are present in a person’s body and are growing and causing symptoms.  If the active TB infection is the lungs or other parts of the airway, it can be spread to other people.  A latent TB infection means that TB bacteria are present in a person’s body, but his/her immune system is able to prevent the TB bacteria from growing.  Individuals with latent TB infection are not able to spread TB to others.


People over the age of 15 years currently without work, but who were available to start work and who had looked for work in the previous four weeks.  Anyone who had not looked for work in the previous four weeks is excluded. 

Unsuitable housing

Is defined as not having enough bedrooms for the size and composition of the household according to the National Occupancy Standard.

Urban Area

Urban areas include both large and small population centres with a population of at least 1,000 and a density of 400 or more people per square kilometer (e.g., London, Strathroy Ilderton).  Statistics Canada now uses the term population centre instead of urban area. 1

1.Statistics Canada. Population Centre and Rural Area Classification 2016 [Internet]. Ottawa. Ministry of Industry; 2017 Feb 8. Available from: 

Visible Minorities

Visible minority refers to whether a person belongs to a visible minority group as defined by the Employment Equity Act,1995, and, if so, the visible minority group to which the person belongs. The Employment Equity Act defines visible minorities as "persons, other than Aboriginal peoples who are… non-white in colour."

What is the London Census Metropolitan Area (CMA)?

The London CMA includes the municipalities of London, St. Thomas, as well as Thames Centre, Middlesex Centre, Strathroy-Caradoc, Adelaide Metcalfe, Central Elgin and Southwold. The London CMA was one of 15 included in the study. There are 33 CMAs in Canada. 

What is the SES gap?

The 'gap' in health indicators was measured by a ratio of the rate in the low Socioeconomic status (SES) group to the rate in the high SES group. A ratio of 1.0 indicates no difference between the two groups. A ratio higher than one indicates higher rate of the disease or behaviour in the low SES group.

Why are deaths from 2007 the most recent being reported?

At the time of this resource, complete death data from Vital Statistics was only available for years up until 2007. The delay in releasing data results from the time required to ensure data quality. The delays for mortality data are longer than for other sources used in this resource, such as hospitalizations and survey data.

Youth Dependency Ratio

Number of children under the age of 20 divided by the number of people aged 20 to 64 multiplied by 100.