MHLU - Health Status Resource

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A (7) | B (3) | C (7) | D (3) | E (2) | F (5) | G (1) | H (7) | I (12) | K (1) | L (10) | M (6) | N (5) | O (3) | P (12) | R (4) | S (20) | T (5) | U (2) | V (1) | W (3) | Y (1)

Particulate Matter

Small airborne solid particles are referred to as fine particulate matter (PM2.5) and may contain harmful aerosols, combustion particles and metal vapours. These particles, measuring less than 2.5 μg in diameter, can penetrate deep into the lungs and damage tissues through chronic inflammation.

Peer Group

The grouping of Ontario public health units with socio-economic characteristics similar to those of Middlesex-London. It includes Brant County, City of Hamilton, Niagara, Windsor-Essex County and Middlesex-London.  It is based on the 2015 Statistics Canada Peer Group A that includes health regions from across Canada that are characterized by having population centres with high population density and a rural mix.

Per 100,000 Population

A rate which is provided per 100,000 population means that the value of the rate represents the number of events which would occur for every 100,000 people in a specified population.  

Perceived Health

This concept indicates the respondent's health status based on his or her own judgement.  It comes from a survey question asked in the Canadian Community Health Survey of the whole non-institutionalized population aged 12 or older. 

Perinatal Conditions

Conditions which originate in the perinatal period, i.e. the period immediately before, during and after birth. This may include the following:

  • Fetus and newborn affected by maternal factors and by complications of pregnancy, labour and delivery
  • Disorders related to length of gestation and fetal growth
  • Birth trauma
  • Respiratory and cardiovascular disorders specific to the perinatal period
  • Infections specific to the perinatal period
  • Haemorrhagic and haematological disorders of fetus and newborn
  • Transitory endocrine and metabolic disorders specific to fetus and newborn
  • Digestive system disorders of fetus and newborn
  • Conditions involving the integument and temperature regulation of fetus and newborn

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Population Centre

Population centre has replaced the term urban area formerly used by Statistics Canada. It is an area with a population of at least 1,000 and a density of 400 or more people per square kilometre. All areas outside population centres continue to be defined as rural areas.

Small population centres have a population of between 1,000 and 29,999; medium population centres, 30,000 and 99,999; and large urban population centres, 100,000 and over. The area of the population centre is not necessarily the same geographic area described by the city or municipal boundaries as it includes the more densely populated areas adjacent the population cores that meet the 2016 revised set of criteria and threshold levels.1 

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

Population Density

Number of people per square kilometre. Calculated by dividing the total population by land area.

Population Growth

The population percentage change between two time periods or the ratio of the difference between the population at the end of the period and the population at the beginning of the period relative to the population at the beginning of the period.

Potential Years of Life Lost (PYLL)

The sum of the total years of life lost relative to age 75. PYLL is calculated by adding together, for all deaths, the number of years remaining until age 75, and then dividing by the population under the age of 75 years.

Pregnancy Rate

The number of in-hospital deliveries of live births and stillbirths, plus the number of therapeutic abortions, among females aged 15-49 years per 1,000 females aged 15-49.

Preterm Birth Rate

Number of live births delivered before 37 completed weeks of gestation per 100 live births.

Prevalence Rate

The total number of cases of an event in the population that exist for a certain period or point in time