MHLU - Health Status Resource

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Immigrants are people who are or who have ever been landed immigrants or permanent residents. Such persons have been granted the right to live in Canada permanently by immigration authorities. Immigrants who have obtained Canadian citizenship by naturalization are included in this category.

Immunization of School Pupils Act (ISPA)

Under the Immunization of School Pupils Act (ISPA), Ontario health units are required to collect immunization information on all students attending school within the health unit jurisdiction.  If a student’s immunizations are not up to date against diphtheria, measles, mumps, polio, rubella, or tetanus, the ISPA allows for the student to be suspended from school.  Those who have philosophical or medical reasons to be unimmunized can sign an exemption form.

Immunization Records Information System (IRIS)

IRIS is the information system used by all Ontario health units in Ontario to record immunizations and exemptions for all students attending school within the health unit jurisdiction, as well as children attending licensed day cares.  The database is maintained by the Ministry of Health and Long-Term Care and individual health units.

Impact of Health Problems

This is a crude measure of the impact of long-term physical conditions, mental conditions and health problems on the principal domains of life: home, work, school, and other activities.

Incidence Rate

The rate at which new events occur in the population in the given time period

Income quintile

This is a measure that divides the entire population into five equal groups, also known as quintiles. Approximately 20% of the population is in each group. The lowest income quintile is the group with the lowest total household income, after taxes.

Income share

is one way to look at income inequality. It is the share of income held by the half of all households whose incomes fall below the median household income. A percent of 0% would represent complete inequality and a percent of 50% would represent equality.

Index of Socioeconomic Distress in Maps

The socioeconomic distress index, developed at Human Environments Analysis Laboratory at Western University, takes into account four factors: highest level of completed education, unemployment rate, lone parenthood rate, and low income rate. Greater composite scores correspond to higher levels of socioeconomic distress.


A collective name for the original peoples of North America (i.e., First Nations, Métis and Inuit) and their descendants. The indicator “Aboriginal peoples” is used on the 2016 Census to determine Indigenous identity 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. The Canadian Constitution recognizes three groups of Aboriginal people — Indians, Métis and Inuit. These are three separate peoples with unique heritages, languages, cultural practices and spiritual beliefs.

1. Ontario Federation of Labour Aboriginal Circle and Ontario Federation of Labour Aboriginal Persons Caucus. Traditional Territory Acknowledgements in Ontario [Internet]. Toronto ON: Ontario Federation of Labour 2017 [cited 2018 Nov 22]. Available from:

Integrated Public Health Information System (iPHIS)

iPHIS is the information system used for reporting case information for all provincially and nationally reportable communicable diseases. This database is managed by the Ministry of Health and Long-term Care and used in Ontario public health units for communicable disease case and contact follow-up as well as outbreak management. 


IntelliHEALTH is managed by the Ontario Ministry of Health and Long-Term Care and contains health information from numerous data sources. The following data sources were used in this resource:

  • Vital Statistics (deaths) from the Office of the Ontario Registrar General;
  • Inpatient Discharges (hospitalizations, live births, stillbirths) from Canadian Institute for Health Information’s (CIHI) Discharge Abstract Database (DAD)
  • Population Estimates from Statistics Canada, approved by the Ontario Ministry of Finance.


Invasive Infections

An infection is considered invasive when it is found in a normally sterile part of the body, such as blood or cerebrospinal fluid.