DAD/HMDB Inpatient Hospitalizations: Volumes, Length of Stay, and Standardized Rates

Printer-friendly version
About This QuickStat

Quick Stats Metadata

Inpatient Hospitalizations: Volumes, Length of Stay and Standardized Rates

Highlights for these Quick Stats are available, by fiscal year, at: https://secure.cihi.ca/estore/productSeries.htm?pc=PCC526.

Metadata for each statistic follows the template below:

Name of Report

General description of the report of interest

Data Source(s)

Database(s) from which the data for the report of interest is derived

Statistic

Figures available in the report of interest (for example, number of discharges, average length of stay)

Available Breakdowns

All possible methods by which the data for the report of interest may be grouped (for example, by sex, by five-year age group)

Inclusions

Characteristics of records included in the data for the report of interest

Exclusions

Characteristics of records excluded from the data for the report of interest

Methodology

Analytical approach used to calculate the figures presented in the report of interest

Important Notes

Additional information that is relevant to the report of interest (for example, coverage in a particular fiscal year)

Interpretation

Additional notes to aid in understanding the information provided in each report

 

Name of Report

Inpatient Hospitalizations: Volumes and Length of Stay

Data Source(s)

  • Discharge Abstract Database (DAD), Canadian Institute for Health Information (CIHI)
  • Hospital Morbidity Database (HMDB), CIHI
  • Ontario Mental Health Reporting System (OMHRS), CIHI (see Important Notes below)
  • Fichier des hospitalisations MED-ECHO, ministère de la Santé et des Services sociaux du Québec (see Important Notes below)

Statistic

Number of discharges

Available Breakdowns

  • Discharge fiscal year (1995–1996 to 2011–2012)
  • National
  • Province/territory of facility
  • Sex (male, female)
  • Five-year age group (<1 through 90+)

Inclusions

  • Discharges from acute care institutions in Canada  
  • Records with invalid length of stay are included in the number of discharges
  • Records where sex is categorized as “Other” are included in the “All” sex counts

Exclusions

  • Newborns (see Important Notes below)
  • Stillborns
  • Cadaveric donors

Methodology

  • Number of discharges—all records meeting the above inclusion criteria

Important Notes

  • Geography represents the province/territory where the hospital is located.
  • Discharges from acute care institutions in a given province/territory may include non-residents of that particular province/territory or of Canada.
  • Prior to 1999–2000, Nunavut submitted its acute inpatient hospitalization data to CIHI as part of the Northwest Territories. In this report, inpatient hospitalizations prior to 1999–2000 that were captured under Northwest Territories from the region that is now represented as Nunavut were isolated for trending purposes.
  • In 2002–2003, Nunavut did not submit discharge data to CIHI. As such, Canadian figures for 2002–2003 do not include Nunavut and are not comparable with figures from other fiscal years.
  • One hospital in New Brunswick did not submit four periods of data in 2004–2005.
  • Two hospitals in Alberta did not submit two periods of data in 2005–2006 and a third hospital did not submit three periods; one hospital in Alberta did not submit three periods of data in 2006–2007.
  • One Quebec hospital did not submit two periods of data in 2005–2006.
  • Two hospitals in Ontario did not submit any period of data from 2009–2010 to 2011–2012.
  • Quebec data from 2006–2007 to 2009–2010 was sourced from MED-ECHO. Prior to 2006–2007 and from 2010–2011onwards, Quebec data was sourced from the HMDB.
  • As of 2006–2007, the submission of information on adult inpatient mental health beds in Ontario migrated from the DAD to OMHRS. To facilitate the comparison of data over time at the Ontario and pan-Canadian levels, 2006–2007 to 2011–2012 data from OMHRS was incorporated into the inpatient hospitalization data.
  • There were approximately 1,700 discharges that were excluded from OMHRS, per fiscal year, from 2006–2007 through 2011–2012 due to a data quality issue.
  • There is some inconsistency from year to year between provinces/territories in newborn coding. In some provinces/territories, “newborns” includes those born in the reporting facility and those born outside the reporting facility but admitted to that facility within 24 hours of birth.
    Therefore, the figures presented here exclude
    • All newborns born in the reporting facility; and
    • Some newborns born outside the reporting facility but admitted to that facility within 24 hours of birth.

    This will result in a slight undercount of discharges.

Interpretation

  • The terms “hospitalization” and “discharge” are used interchangeably in this document.
  • These statistics reflect the number of hospitalizations (or discharges), which is somewhat higher than the number of individuals hospitalized, since individuals with service transfers or multiple hospitalizations during a single year would be counted more than once in the totals.

 

Name of Report

Inpatient Hospitalizations: Volumes and Length of Stay

Data Source(s)

  • Discharge Abstract Database (DAD), CIHI
  • Hospital Morbidity Database (HMDB), CIHI
  • Ontario Mental Health Reporting System (OMHRS), CIHI (see Important Notes below)
  • Fichier des hospitalisations MED-ECHO, ministère de la Santé et des Services sociaux du Québec (see Important Notes below)

Statistic

Total length of stay (days)

Available Breakdowns

  • Discharge fiscal year (1995–1996 to 2011–2012)
  • National
  • Province/territory of facility
  • Sex (Male, Female)
  • Five-year age group (<1 through 90+)

Inclusions

  • Discharges from acute care institutions in Canada
  • Records where sex is categorized as “Other” are included in the “All” sex counts

Exclusions

  • Newborns (see Important Notes below)
  • Invalid lengths of stay
  • Stillbirths
  • Cadaveric donors

Methodology

  • Total length of stay—calculated by summing the length of stay for all records with valid length of stay

Important Notes

  • Geography represents the province/territory where the hospital is located.
  • Discharges from acute care institutions in a given province/territory may include non-residents of that particular province/territory or of Canada.
  • Prior to 1999–2000, Nunavut submitted its acute inpatient hospitalization data to CIHI as part of the Northwest Territories. In this report, inpatient hospitalizations prior to 1999–2000 that were captured under Northwest Territories from the region that is now represented as Nunavut were isolated for trending purposes.
  • In 2002–2003, Nunavut did not submit discharge data to CIHI. As such, Canadian figures for 2002–2003 do not include Nunavut and are not comparable with figures from other fiscal years.
  • One hospital in New Brunswick did not submit four periods of data in 2004–2005.
  • Two hospitals in Alberta did not submit two periods of data in 2005–2006 and a third hospital did not submit three periods; one hospital in Alberta did not submit three periods of data in 2006–2007.
  • One Quebec hospital did not submit two periods of data in 2005–2006.
  • Two hospitals in Ontario did not submit any period of data from 2009–2010 to 2011–2012.
  • Quebec data from 2006–2007 to 2009–2010 was sourced from MED-ECHO. Prior to 2006–2007 and from 2010–2011onwards, Quebec data was sourced from the HMDB.
  • As of 2006–2007, the submission of information on adult inpatient mental health beds in Ontario migrated from the DAD to OMHRS. To facilitate the comparison of data over time at the Ontario and pan-Canadian levels, 2006–2007 to 2011–2012 data from OMHRS was incorporated into the inpatient hospitalization data.
  • There were approximately 1,700 discharges that were excluded from OMHRS, per fiscal year, from 2006–2007 through 2011–2012 due to a data quality issue.  
  • There is some inconsistency from year to year between provinces/territories in newborn coding. In some provinces/territories, “newborns” includes those born in the reporting facility and those born outside the reporting facility but admitted to that facility within 24 hours of birth.
    Therefore, the figures presented here exclude
    • All newborns born in the reporting facility; and
    • Some newborns born outside the reporting facility but admitted to that facility within 24 hours of birth.

    This will result in a slight undercount of discharges.

Interpretation

  • Length of stay (LOS) is defined as the number of days a patient spends in hospital from time of admission to time of discharge.

 

Name of Report

Inpatient Hospitalizations: Volumes and Length of Stay

Data Source(s)

  • Discharge Abstract Database (DAD), CIHI
  • Hospital Morbidity Database (HMDB), CIHI
  • Ontario Mental Health Reporting System (OMHRS), CIHI (see Important Notes below)
  • Fichier des hospitalisations MED-ECHO, ministère de la Santé et des Services sociaux du Québec (see Important Notes below)

Statistic

Average length of stay (days)

Available Breakdowns

  • Discharge fiscal year (1995–1996 to 2011–2012)
  • National
  • Province/territory of facility
  • Sex (male, female)
  • Five-year age group (<1 through 90+)

Inclusions

  • Discharges from acute care institutions in Canada
  • Records where sex is categorized as “Other” are included in the “All” sex counts  

Exclusions

  • Newborns (see Important Notes below)
  • Invalid lengths of stay
  • Stillbirths
  • Cadaveric donors

Methodology

  • Average length of stay—calculated by dividing total length of stay by number of discharges with a valid length of stay

Important Notes

  • Geography represents the province/territory where the hospital is located.
  • Discharges from acute care institutions in a given province/territory may include non-residents of that particular province/territory or of Canada.
  • Prior to 1999–2000, Nunavut submitted its acute inpatient hospitalization data to CIHI as part of the Northwest Territories. In this report, inpatient hospitalizations prior to 1999–2000 that were captured under Northwest Territories from the region that is now represented as Nunavut were isolated for trending purposes.
  • In 2002–2003, Nunavut did not submit discharge data to CIHI. As such, Canadian figures for 2002–2003 do not include Nunavut and are not comparable with figures from other fiscal years.
  • One hospital in New Brunswick did not submit four periods of data in 2004–2005.
  • Two hospitals in Alberta did not submit two periods of data in 2005–2006 and a third hospital did not submit three periods; one hospital in Alberta did not submit three periods of data in 2006–2007.
  • One Quebec hospital did not submit two periods of data in 2005–2006.
  • Two hospitals in Ontario did not submit any period of data from 2009–2010 to 2011–2012.
  • Quebec data from 2006–2007 to 2009–2010 was sourced from MED-ECHO. Prior to 2006-2007 and from 2010–2011 onwards, Quebec data was sourced from the HMDB.
  • As of 2006–2007, the submission of information on adult inpatient mental health beds in Ontario migrated from the DAD to OMHRS. To facilitate the comparison of data over time at the Ontario and pan-Canadian levels, 2006–2007 to 2011–2012 data from OMHRS was incorporated into the inpatient hospitalization data.
  • There were approximately 1,700 discharges that were excluded from OMHRS, per fiscal year, from 2006–2007 through 2011–2012 due to a data quality issue.   
  • There is some inconsistency from year to year between provinces/territories in newborn coding. In some provinces/territories, “newborns” includes those born in the reporting facility and those born outside the reporting facility but admitted to that facility within 24 hours of birth.
    Therefore, the figures presented here exclude
    • All newborns born in the reporting facility; and
    • Some newborns born outside the reporting facility but admitted to that facility within 24 hours of birth.

    This will result in a slight undercount of discharges.

Interpretation

  • Length of stay (LOS) is defined as the number of days a patient spends in hospital from time of admission to time of discharge.

 

Name of Report

Inpatient Hospitalizations: Standardized Rates

Data Source(s)

  • Discharge Abstract Database (DAD), CIHI
  • Hospital Morbidity Database (HMDB), CIHI
  • Ontario Mental Health Reporting System (OMHRS), CIHI (see Important Notes below)
  • Fichier des hospitalisations MED-ECHO, ministère de la Santé et des Services sociaux du Québec (see Important Notes below)

Statistic

Age–sex standardized hospitalization rate per 100,000 population

Available Breakdowns

  • Discharge fiscal year (1995–1996 to 2011–2012)
  • National
  • Province/territory of patient residence

Inclusions

  • Discharges from acute care institutions in Canada
  • Discharge abstracts of Canadian residents (based on patient postal code)
  • Discharge abstracts with valid age
  • Discharge abstracts with sex of male or female

Exclusions

  • Newborns (see Important Notes below)
  • Stillborns
  • Cadaveric donors

Methodology

The direct standardization process was used; the October 1, 2001, post-censal fiscal year Canadian population estimates were used as the standard population.

  1. Age–sex specific rates calculated for five-year age (<1 to 90+) and gender (male or female) groups for each province/territory and for Canada:
  • Numerator for rate = number of discharges in that age–sex group of residents of a particular province/territory (for provincial/territorial rates) or of Canada (for national rates) in the fiscal year of interest
  • Denominator for rate = number of people in that age–sex group of residents of a particular province/territory (for provincial/territorial rates) or of Canada (for national rates) in the fiscal year of interest
  • Age–sex specific rates then multiplied by the age–sex specific population in the standard population.
  • The results of step 2 then summed for each province/territory or for Canada.
  • The results of step 3 then divided by the total population of Canada from the standard population.
  • The results of step 4 then multiplied by 100,000 to give the age–sex standardized discharge rate per 100,000 population of the province/territory of interest.
  • Geography represents the province or territory in which the patient resided at the time of discharge. Therefore, statistics presented in this table include residents of Canada only.
  • Important Notes

    • Prior to 1999–2000, Nunavut submitted its acute inpatient hospitalization data to CIHI as part of the Northwest Territories. In this report, inpatient hospitalizations prior to 1999–2000 that were captured under Northwest Territories from the region that is now represented as Nunavut were isolated for trending purposes.
    • In 2002–2003, Nunavut did not submit discharge data to CIHI. As such, Canadian figures for 2002–2003 do not include Nunavut and are not comparable with figures from other fiscal years.
    • One hospital in New Brunswick did not submit four periods of data in 2004–2005.
    • Two hospitals in Alberta did not submit two periods of data in 2005–2006 and a third hospital did not submit three periods; one hospital in Alberta did not submit three periods of data in 2006–2007.
    • One Quebec hospital did not submit two periods of data in 2005–2006.
    • Two hospitals in Ontario did not submit any period of data from 2009–2010 to 2011–2012
    • Quebec data from 2006–2007 to 2009–2010 was sourced from MED-ECHO. Prior to 2006–2007 and from 2010–2011 onwards, Quebec data was sourced from the HMDB.
    • As of 2006–2007, the submission of information on adult inpatient mental health beds in Ontario migrated from the DAD to OMHRS. To facilitate the comparison of data over time at the Ontario and pan-Canadian levels, 2006–2007 to 2011–2012 data from OMHRS was incorporated into the inpatient hospitalization data.
    • There were approximately 1,700 discharges that were excluded from OMHRS, per fiscal year, from 2006–2007 through 2011–2012 due to a data quality issue.   
    • There is some inconsistency from year to year between provinces/territories in newborn coding. In some provinces/territories, “newborns” includes those born in the reporting facility and those born outside the reporting facility but admitted to that facility within 24 hours of birth.
      Therefore, the figures presented here exclude
      • All newborns born in the reporting facility; and
      • Some newborns born outside the reporting facility but admitted to that facility within 24 hours of birth.

      This will result in a slight undercount of discharges used in the numerator of the age-standardized discharge rate.

    Interpretation

    • Age–sex standardization is a statistical technique used to remove the effect of the age and gender distributions of two or more populations (for example, Ontario and Alberta) when comparing rates across different populations or for the same population over time.
    • Age–sex standardized rates in this table can be compared with each other.
    • Age–sex standardized rates in this table cannot be compared with other rates calculated outside this report.
    • The terms “hospitalization” and “discharge” are used interchangeably in this document.
    • These statistics reflect the number of hospitalizations (or discharges), which is somewhat higher than the number of individuals hospitalized, since individuals with multiple hospitalizations during a single year would be counted more than once in the totals.
    • There are methodological differences in how the numerator and denominator are calculated:
      • Numerator for rate = number of discharges in that age–sex group of residents of a particular province/territory (for provincial/territorial rates) or of Canada (for national rates) in the fiscal year of interest. Therefore, the same person could be included more than once if he or she were discharged more than once in the same province/territory in the fiscal year of interest.
      • Denominator for rate = number of persons in that age–sex group of residents of a particular province/territory (for provincial/territorial rates) or of Canada (for national rates) in the fiscal year of interest. Therefore, the same person could be included only once in the same province/territory in the fiscal year of interest.
      • Because of these methodological differences, the age–sex standardized rates will be higher than if the numerator considered each person only once.

     

    Name of Report

    Inpatient Hospitalizations: Standardized Rates

    Data Source(s)

    • Discharge Abstract Database (DAD), CIHI
    • Hospital Morbidity Database (HMDB), CIHI
    • Ontario Mental Health Reporting System (OMHRS), CIHI (see Important Notes below)
    • Fichier des hospitalisations MED-ECHO, ministère de la Santé et des Services sociaux du Québec (see Important Notes below)

    Statistic

    Age–standardized average length of stay (days)

    Available Breakdowns

    • Discharge Fiscal Year (1995–1996 to 2011–2012)
    • National
    • Province/territory of facility

    Inclusions

    • Discharges from acute care institutions in Canada
    • Discharge abstracts with valid age

    Exclusions

    • Newborns (see Important Notes below)
    • Invalid lengths of stay
    • Stillbirths
    • Cadaveric donors

    Methodology

    The direct standardization process was used; the pooled number of hospitalized patients from 1995–1996 to 2005–2006 was used as a standard population. This represents the average age distribution of the inpatient hospital population from 1995–1996 through 2005–2006.

    1. Age-specific average length of stay figures calculated for five-year age groups (<1 to 90+) for each province/territory and for Canada:
    • Numerator for average length of stay = number of total days of stay in that age group of discharges of a particular province/territory (for provincial/territorial rates) or of Canada (for national rates) in the fiscal year of interest
    • Denominator for average length of stay = number of hospitalizations in that age group of discharges of a particular province/territory (for provincial/territorial rates) or of Canada (for national rates) in the fiscal year of interest
  • Age-specific average length of stay figures then multiplied by the derived weight for that particular age group from the standard population.
  • The results of step 2 then summed for each province/territory or for Canada to give the age-standardized average length of stay.
  • Geography represents the province/territory where the hospital is located.
  • Average length of stay is calculated using actual (that is, not rounded) number of hospitalizations and total inpatient hospital days.
  • Important Notes

    • Discharges from acute care institutions in a given province/territory may include non-residents of that particular province/territory or of Canada.
    • Prior to 1999–2000, Nunavut submitted its acute inpatient hospitalization data to CIHI as part of the Northwest Territories. In this report, inpatient hospitalizations prior to 1999–2000 that were captured under Northwest Territories from the region that is now represented as Nunavut were isolated for trending purposes.
    • In 2002–2003, Nunavut did not submit discharge data to CIHI. As such, Canadian figures for 2002–2003 do not include Nunavut and are not comparable with figures from other fiscal years.
    • One hospital in New Brunswick did not submit four periods of data in 2004–2005.
    • Two hospitals in Alberta did not submit two periods of data in 2005–2006 and a third hospital did not submit three periods; one hospital in Alberta did not submit three periods of data in 2006–2007.
    • One Quebec hospital did not submit two periods of data in 2005–2006.
    • Two hospitals in Ontario did not submit any period of data from 2009–2010 to 2011–2012.
    • Quebec data from 2006–2007 to 2009–2010 was sourced from the MED-ECHO. Prior to 2006–2007 and from 2010–2011 onwards, Quebec data was sourced from the HMDB.
    • As of 2006–2007, the submission of information on adult inpatient mental health beds in Ontario migrated from the DAD to OMHRS. To facilitate the comparison of data over time at the Ontario and pan-Canadian levels, 2006–2007 to 2011–2012 data from OMHRS was incorporated into the inpatient hospitalization data.
    • There were approximately 1,700 discharges that were excluded from OMHRS, per fiscal year, from 2006–2007 through 2011–2012 due to a data quality issue.   
    • There is some inconsistency from year to year among provinces/territories in newborn coding. In some provinces/territories, “newborns” includes those born in the reporting facility, and those born outside the reporting facility but admitted to that facility within 24 hours of birth.
      Therefore, the figures presented here exclude
      • All newborns born in the reporting facility; and
      • Some newborns born outside the reporting facility but admitted to that facility within 24 hours of birth.

      This will result in a slight undercount of discharges.

    Interpretation

    • Age-standardization is a statistical technique used to remove the effect of the age distribution of two or more populations (for example, Ontario and Alberta) when comparing measures across different populations or for the same population over time.
    • Age-standardized measures in this table can be compared with each other.
    • Age-standardized measures in this table cannot be compared with other measures calculated outside this report.
    • Length of stay (LOS) is defined as the number of days a patient spends in hospital from time of admission to time of discharge.

     

     

     

     

    Contact Details
    For more information about the Discharge Abstract Database (DAD), please visit /CIHI-ext-portal/internet/en/document/types+of+care/hospital+care/acute+care/dad_metadata  or send an email to cad@cihi.ca.

    For more information about the Hospital Morbidity Database (HMDB), please visit /CIHI-ext-portal/internet/en/document/types+of+care/hospital+care/acute+care/HMDB_METADATA or send an email to cad@cihi.ca.

    For more information about the Ontario Mental Health Reporting System (OMHRS), please visit /CIHI-ext-portal/internet/en/document/types+of+care/specialized+services/mental+health+and+addictions/services_omhrs or send an email to omhrs@cihi.ca.

    For assistance using Interactive CIHI data, please send an email to help@cihi.ca.

    All other inquiries can be sent to

    Canadian Institute for Health Information
    495 Richmond Road, Suite 600
    Ottawa, ON  K2A 4H6
    Phone: (613) 241-7860
    Fax: (613) 241-8120