"Identifying Information: Name","Total Days Stayed for Mental ºìÁì½í¹Ï±¨ and Substance Use Disorder Hospitalizations"
"Identifying Information: Short/Other Names","Not applicable"
"Identifying Information: Description","Total days stayed, percentage of days stayed, average days stayed, 0.5% trimmed average, median, 25th and 75th percentiles, and crude and age-standardized rate of days stayed for mental health and substance use disorder hospitalizations, by Canada and province/territory, with the following available breakdowns:Age group (not provided for age-standardized rates)Recorded sex or genderHospital typeDiagnosis category and selected subcategoryNote that some breakdown combinations are available only at the national level."
"Background, Interpretation and Benchmarks: Rationale","Measures related to total days stayed provide information about hospital utilization and may reflect differences in the health of the population and mental health service delivery models as well as variations in the availability and accessibility of specialized, residential and/or ambulatory and community-based health services."
"Background, Interpretation and Benchmarks: Interpretation","This group of measures provides information about lengths of stay for mental health and substance use disorder hospitalizations in Canada stratified by diagnostic, geographic and demographic characteristics.See related Discharge indicator"
"Background, Interpretation and Benchmarks: HSP Framework Dimension","ºìÁì½í¹Ï±¨ system resources"
"Background, Interpretation and Benchmarks: Targets/Benchmarks","Not applicable"
"Available Data Years","2019
 to 2023"
"Available Data Years: Type of Year",Fiscal
"Availability of Results: Geographic Coverage","All provinces/territories"
"Reporting Level/Disaggregation",National
"Update Frequency","Every year"
"Result Updates: Latest Results Update Date","March 2025"
"Result Updates: Updates","Categorization of episodes of care to broad mental health category is based on the DSM-5/DSM-5-TR  diagnosis category (not the specific diagnosis code).From 2016–2017 to 2021–2022, the Ontario Mental ºìÁì½í¹Ï±¨ Reporting System (OMHRS) used the DSM-5 diagnostic classification system. In March 2022, the American Psychiatric Association (APA) released the DSM-5-TR. Subsequently, from April 2022 to September 2022, OMHRS used both DSM-5 and DSM-5-TR diagnostic classification systems. As of October 2022, OMHRS uses the DSM-5-TR diagnostic classification system only."
"Indicator Calculation: Description","Counts = Total number of days stayed in hospital involving mental health and substance use disordersPercentages = (Sum of days stayed for breakdown value ÷ Sum of days stayed across all breakdown values) × 100Average days stayed in hospital for mental health and substance use disorders = Total days stayed in hospital for mental health and substance use disorders ÷ Total number of hospitalizations for mental health and substance use disorders0.5% trimmed average days stayed = Average after removing the highest 0.5% and lowest 0.5% of values; this reduces the effect of extreme values on the averageMedian days stayed in hospital for mental health and substance use disorders = The middle value of a sorted length of stay from the smallest to the largest25th percentile of days stayed in hospital for mental health and substance use disorders = 25% of mental health and substance use disorder hospitalizations had a length of stay less than the calculated value75th percentile of days stayed in hospital for mental health and substance use disorders = 75% of mental health and substance use disorder hospitalizations had a length of stay less than the calculated valueCrude rate = (Number of days stayed for mental health and substance use disorders ÷ Population estimate) × 100,000Age-standardized rate = Number of days stayed based on the crude rates for each age group and the application of population weights for each age groupUnit of analysis: Days stayed for mental health and substance use disordersDays stayed (length of stay) may include days stayed that occurred prior to the fiscal year of discharge."
"Denominator: Description:","Counts, percentages, means, medians, 25th and 75th percentiles, rates: Total days stayedCrude rates: Total mid-year population"
"Denominator: Inclusions:","Counts, percentages, means, medians, 25th and 75th percentiles, crude and age-standardized rates: Total days stayed for discharges in Canada involving mental health and substance use disorders as the primary diagnosis and/or diagnosis categoryCrude rates: Total mid-year populationDischarges were assigned to diagnosis groups based on the primary diagnosis or the diagnosis that contributed most to the patient’s length of stay during that hospitalization period.Recorded sex or gender is male or femaleValid age recordedValid discharge date recorded"
"Denominator: Exclusions:","Records pertaining to newborns, stillbirths and cadaveric donorsThe inclusion criteria result in the exclusion of <1% of discharges annually, as the following records are excluded:Records from OMHRS and from specialty psychiatric facilities that submit to the Discharge Abstract Database (DAD) that are classified as non–mental health disorders and that are not otherwise classifiedRecords with age = missing from all contributing data sourcesRecords with recorded sex or gender = other or missing from all contributing data sources"
"Numerator: Description:","Total days stayed for discharges in Canada for mental health and substance use disorders as the primary diagnosis and/or diagnosis category"
"Numerator: Inclusions:","Discharge from hospitalization in Canada with a primary diagnosis of mental health or substance use disorderDischarges were assigned to diagnosis groups based on the primary diagnosis or the diagnosis that contributed most to the patient’s length of stay during that hospitalization period.Recorded sex or gender is male or femaleValid age recordedValid admission and discharge date recordedFor information on grouping diagnosis codes and categories to broad mental health and substance use categories, please refer to the ºìÁì½í¹Ï±¨Mental ºìÁì½í¹Ï±¨ and Substance Use Diagnosis Code Groupings for Selected Indicators (XLSX)."
"Numerator: Exclusions:","Records pertaining to newborns, stillbirths and cadaveric donorsThe inclusion criteria result in the exclusion of <1% of discharges annually, as the following records are excluded:Records from OMHRS and from specialty psychiatric facilities that submit to the DAD that are classified as non–mental health disorders and that are not otherwise classifiedRecords with age = missing from all contributing data sourcesRecords with recorded sex or gender = other or missing from all contributing data sources"
"Method of Adjustment: Other method of adjustment:","Age-standardized rates: Direct standardization (standard population = Canada 2011)"
"Method of Adjustment: Direct Standardization - Standard Population","Adjustment AppliedAge-standardized rates: Age-adjusted"
"Indicator Calculation: Geographic Assignment","Place of residence"
"Data Sources",DAD
"Data Sources: Other Data Source","HMHSStatistics Canada, Centre for Demography. Population estimates, July 1 (based on 2021 census), by age group and gender for Canada, provinces, territories, health regions and peer groups."
"Quality Statement: Caveats and Limitations","Substance-related disorders presented in these measures are mental and behavioural disorders. Users are cautioned to not compare the results with those of other indicators (e.g., Hospital Stays for Harm Caused by Substance Use), which may include a broader or narrower set of conditions, including poisonings.Certain cells were suppressed or modified for confidentiality reasons in accordance with CIHI’s privacy policy.Neurocognitive disorders are conditions that are caused by decreased functioning of the brain due to disease, trauma or injury. Included in this category, for example, are various forms of dementia. This category may be included or excluded by selecting yes or no, respectively, from the Include neurocognitive disorders drop-down, where available. Where selected subcategories are made available, users are advised that the totals displayed represent the overall total at a higher level for context (e.g., rate for Canada for all mental health and substance use disorder categories combined rather than rate for Canada for selected subcategories combined).Many factors contribute to the observed variations in the analysis of indicators at the provincial/territorial level. These include geography, population health, provincial and regional health service resources, and health services administration, among others. It is important to consider these factors and the effect they may have on indicator results when conducting comparative analyses. The variation in results between provinces/territories suggests systematic differences inProvincial/territorial or regional health policies, practices and resourcesGeography and urban/rural population distributionEnvironmental and socio-economic characteristicsTypes of patients served and acuity of illnessThe range of health services available beyond general and specialty psychiatric hospitals (such as community mental health services)Accessibility and awareness of alternative points of entry to the health systemThe above list suggests a few of the factors that should be considered when making provincial/territorial comparisons."
"Quality Statement: Trending Issues","Mental health and substance use disorders included in the mental health categories and subcategories presented here may be categorized differently than those presented in previously published data tables. Further, different diagnoses may be included or excluded.Some HMHS facilities do not provide subcategory information. As a result, the volume of records presented for subcategories may be under-represented for psychiatric facilities."
"Quality Statement: Comments","Length of stay = Discharge Date minus Admission DateWhere Discharge Date = Admission Date, the length of stay (LOS) is set to 1. Service interruptions and alternate level of care (ALC) days are included if they occurred during the stay.Days stayed is equivalent to LOS.The basic unit of observation is the discharge abstract or the record of an inpatient’s stay in a psychiatric or general hospital. The discharge abstract is completed at discharge, which includes, for example, cases where the individual was transferred to another hospital or care setting (e.g., long-term care), left against medical advice or died. Records are grouped into fiscal years based on the individual’s date of discharge from the hospital. If an individual was hospitalized more than once in the same fiscal year, a separate record for each stay was submitted. Hence the basic units of observation are events, not unique patients. If an individual was admitted prior to the beginning of a fiscal year, the days stayed prior to the year of discharge are included in the total days stayed for that event.In Canada, there is no standard definition of a psychiatric hospital. For the purposes of these measures, psychiatric hospitals are medical hospitals that provide psychiatric services on an inpatient and/or outpatient basis and that have been identified by the provinces or CIHI. Also for the purposes of these measures, a general hospital is a publicly funded hospital that provides primarily for the diagnosis and treatment of hospitalized individuals with a wide range of diseases or injuries. The services of a general hospital are not restricted to a specific age group or a specific recorded sex or gender."
References,"Not applicable"