MHLU - Health Status Resource

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Aboriginal Identity Population

The Aboriginal identity population includes people who reported that they identify with at least one Aboriginal group; that is, North American Indian, Métis or Inuit, and/or those who reported being a Treaty Indian or a Registered Indian, as defined by the Indian Act of Canada, and/or those who reported they were members of an Indian band or First Nations.

Adverse Events Following Immunization (AEFI)

An adverse event following immunization (AEFI) is an unfavourable medical condition or reaction that occurs after an immunization is given.  An adverse event that follows an immunization may or may not be due to that immunization.  Reports of AEFIs from Middlesex-London are compiled and assessed as part of the provincial, national and international system of vaccine safety monitoring.

Age-Specific Fertility Rate

The number of live births to women in a given age group over the number of women in that age group.

Age-Standardized Rate

Age-standardized rates may be used to compare different geographic areas or time frames to adjust for any differences in the age structure of the populations that could cause a difference in rates.

It reflects the number of events (e.g., deaths, hospitalizations) that would occur for a given population if that population had the same age distribution as the 1991 Canadian population.

Age-standardized rates have been used to make more valid comparisons than comparing crude rates. Standardization requires adjusting for the effects of varying age structures of different populations and over different periods of time. The importance of age-standardization can be illustrated by using Population X, which has a higher proportion of elderly persons than Population Y. The unadjusted or “crude” mortality rate for Population X would be significantly higher than Population Y solely because it has a higher proportion of elderly persons and the elderly have a much higher death rate than younger people. This concept also applies when comparing one population over different time periods if the age structure of the population changes over time. By standardizing the mortality rates for Population X, we can see what the mortality rate would be like if they had the same age structure as Population Y. The two different populations are now compared directly.

Air Quality Index (AQI)

This index is based on six pollutants that have adverse effects on human health and the environment: ozone (O3), fine particulate matter (PM2.5), nitrogen dioxide (NO2), carbon monoxide (CO), sulphur dioxide (SO2), and total reduced sulphur (TRS) compounds.

AQI < 32 = good or very good; AQI 32-49 = moderate; AQI 50-99 = poor; AQI >99 = very poor

Air quality in the poor or very poor range can have adverse effects on a large portion of the animal/human population and can damage property and vegetation. (Ministry of the Environment, 2008)

Association of Public Health Epidemiologists of Ontario (APHEO)

The Association of Public Health Epidemiologists in Ontario is an organization of approximately 90 full members who practice epidemiology in Ontario's public health units, as well as more than 150 affiliate members. APHEO's mission is to advance and promote the discipline and professional practice of epidemiology in Ontario public health units.