MHLU - Health Status Resource

Deaths From All Causes

Deaths From All Causes

Key Findings: 
  • Age-standardized death rates in Middlesex-London, Ontario and the Peer Group showed similar trends as rates decreased steadily from 2000 to 2007.  Rates for Middlesex-London fell by 17% over this time period (Fig. 3.1).
  • Age-standardized death rates in Middlesex-London were significantly lower than the Peer Group rates. Although rates in Middlesex-London were somewhat higher than those in Ontario, the differences were generally not statistically significant (Fig. 3.1).
  • Age-standardized death rates for males in Middlesex-London declined more than those for females, resulting in a slight narrowing of the gap in death rates between the sexes by 2007 (Fig. 3.2). Trends were similar for Ontario and the Peer Group (data not shown).
  • Age-specific death rates in Middlesex-London were higher for males than for females, especially from ages 20 to 74 (Fig. 3.3).
  • In 2007, 3,188 Middlesex-London residents died; 1,566 males and 1,622 females. The crude mortality rate in Middlesex-London was 717.4 per 100,000 people in 2007 (Fig. 3.4).
  • Death rates in Middlesex County and the City of London were not statistically different from each other (Fig 3.5).  
  • Rates in both declined over time, though not significantly in the County (Fig 3.5). 
Interpretive Notes

The values of age-standardized rates should not be used to represent the true rate of deaths (ie. mortality) in a population. Age-standardized rates are used to compare different geographic areas that have different age structures in order to adjust for the effect of age on the rates of disease in the different areas. This can also apply to comparisons over time when population age structure may change. If one is interested in knowing the true mortality rates in a particular geographic area, e.g. the number of deaths for males per 100,000 males, then unadjusted (crude) mortality rates should be used instead of age standardized rates.

The geography associated with all rates presented in this report relate to where people lived at the time in question as opposed to where the event (e.g. death or birth) took place.

How this Indicator was Calculated: 
Ontario Public Health Standard: 

Population Health Assessment and Surveillance Protocol - Section 1, Subsections b-ii

Jargon Explained

Age-standardized mortality rate:

Number of deaths that would occur for a given population if that population had the same age distribution as the 1991 Canadian population.

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.

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Crude mortality rate

Total number of events (e.g., deaths, births, hospitalizations) divided by the total population for a given time period and geography. If one is interested in knowing the true event rates in a particular geographic area then unadjusted or crude rate should be used instead of age standardized rate.