Individual Study / DAD

Discharge Abstract Database
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Discharge Abstract Database

Networks -
Datasets -
Variables -
Start Year
1994
Supplementary Information
- DAD data is available from 1994–1995 onward for data requests. - More than 3.2 million abstracts are submitted annually to the DAD, representing approximately 75% of all acute inpatient separations in Canada. - Quebec does not submit data to the DAD; Quebec’s acute inpatient separations are reported to the Hospital Morbidity Database (HMDB) and usually account for 25% of total inpatient separations in Canada. -About 2.4 million day surgery abstracts are submitted to the Canadian Institute for Health Information (CIHI) annually; approximately 35% are sent to the DAD. -Additional information available at : [Discharge Abstract Database Reference Guide](https://www.unb.ca/nbirdt/_assets/documents/nbirdt/data-holdings/discharge_abstract_database_reference_guide.pdf)
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Members

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Investigators Contacts
  • Canadian Institute for Health Information
    CIHI

Design

Study design
Registry
Follow Up
Data on participants is updated quarterly.

Marker Paper

Recruitment

Recruitment Target
  • Individuals

Number of Participants

Number of Participants
No Limit
Number of Participants with Biological Samples

Access

Availability of data and biosamples

Possible Access to Data
Possible Access to Biosamples
Other
Yes
No
Not applicable
Don't know

Timeline

DAD population

Selection Criteria
Newborns
Twins
Countries
  • Canada
Territory
Ethnic Origin
Health Status
  • Patients discharged from a hospital.
Other Criteria
Stillbirths are not included.
Supplementary Information about selection criteria

Recruitment

Sources of recruitment
  • Specific population
Specific Population
  • Clinic patients
Supplementary Information
Patients are identified from acute inpatient facilities.

Number of Participants

Number of Participants
No Limit
Number of Participants with Biological Samples
Data Collection Events
# Name Description Start End
0 DAD - Data capture 1994 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 1994-01 1994-12
1 DAD - Data capture 1995 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 1995-01 1995-12
2 DAD - Data capture 1996 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 1996-01 1996-12
3 DAD - Data capture 1997 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 1997-01 1997-12
4 DAD - Data capture 1998 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 1998-01 1998-12
5 DAD - Data capture 1999 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 1999-01 1999-12
6 DAD - Data capture 2000 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2000-01 2000-12
7 DAD - Data capture 2001 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2001-01 2001-12
8 DAD - Data capture 2002 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2002-01 2002-12
9 DAD - Data capture 2003 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2003-01 2003-12
10 DAD - Data capture 2004 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2004-01 2004-12
11 DAD - Data capture 2005 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2005-01 2005-12
12 DAD - Data capture 2006 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2006-01 2006-12
13 DAD - Data capture 2007 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2007-01 2007-12
14 DAD - Data capture 2008 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2008-01 2008-12
15 DAD - Data capture 2009 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2009-01 2009-12
16 DAD - Data capture 2010 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2010-01 2010-12
17 DAD - Data capture 2011 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2011-01 2011-12
18 DAD - Data capture 2012 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2012-01 2012-12
19 DAD - Data capture 2013 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2013-01 2013-12
20 DAD - Data capture 2014 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2014-01 2014-12
21 DAD - Data capture 2015 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2015-01 2015-12
22 DAD - Data capture 2016 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2016-01 2016-12
23 DAD - Data capture 2017 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2017-01 2017-12
24 DAD - Data capture 2018 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2018-01 2018-12
25 DAD - Data capture 2019 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2019-01 2019-12
26 DAD - Data capture 2020 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2020-01 2020-12
27 DAD - Data capture 2021 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2021-01 2021-12
28 DAD - Data capture 2022 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2022-01 2022-12
29 DAD - Data capture 2023 Information is collected about demographics, administrative and clinical hospital inpatient discharges, and day surgery interventions. 2023-01

Classifications

Socio-demographic and economic characteristics
Lifestyle and behaviours
Birth, pregnancy and reproductive health history
Perception of health, quality of life, development and functional limitations
Diseases
Symptoms and signs
Medication and supplements
Non-pharmacological interventions
Health and community care services utilization
Death
Physical measures and assessments
Laboratory measures
Cognition, personality and psychological measures and assessments
Life events, life plans, beliefs and values
Preschool, school and work life
Social environment and relationships
Physical environment
Administrative information

Socio-demographic and economic characteristics

Age/birthdate
Sex/gender
Marital/partner status
Education
Residence
Citizenship and immigrant status
Labour force and retirement
Income, possessions, and benefits
Other socio-demographic and economic characteristics

Lifestyle and behaviours

Nutrition
Breastfeeding

Birth, pregnancy and reproductive health history

Puberty, menstruation, menopause and andropause
Pregnancy, delivery and birth
Fertility and sexual health

Diseases

Neoplasms (C00-D48)
Endocrine, nutritional and metabolic diseases (E00-E90)
Injury, poisoning and certain other consequences of external causes (S00-T98)
Diseases without precise specification or falling into multiple categories

Medication and supplements

Medication and supplement intake
Posology and protocol of administration

Non-pharmacological interventions

Surgical interventions
Radiological interventions
Physical therapy interventions
Cognitive, psychological and sensory interventions
Other and unspecified non-pharmacological interventions

Health and community care services utilization

Visits to health professionals
Hospitalizations
Community and social care
Other health and community care

Death

Vital status
Cause of death
Other end of life or death-related information

Physical measures and assessments

Anthropometry

Laboratory measures

Other laboratory measures

Life events, life plans, beliefs and values

Life events

Social environment and relationships

Social support

Physical environment

Other physical environment characteristics

Administrative information

Identifiers
Date and time-related information
Other administrative information