Indicator Metadata
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Name | Obstetric Patients Readmitted to Hospital |
Short/Other Names |
30-Day Obstetric Readmission |
Description | This indicator measures the risk-adjusted rate of urgent readmission for the obstetric patient group. For further details, please see the General Methodology Notes. |
Interpretation | Lower rates are desirable. |
HSP Framework Dimension |
Health System Outputs: Appropriate and effective |
Areas of Need |
Getting Better |
Geographic Coverage |
All provinces/territories |
Reporting Level/Disaggregation |
National, Province/Territory, Region, Facility, Neighbourhood Income Quintile |
Indicator Results |
Name | Obstetric Patients Readmitted to Hospital |
Short/Other Names |
30-Day Obstetric Readmission |
Description | This indicator measures the risk-adjusted rate of urgent readmission for the obstetric patient group. For further details, please see the General Methodology Notes. |
Calculation: Description | Risk-adjusted rate = Observed number of readmissions ÷ Expected number of readmissions × Canadian average readmission rate Unit of analysis: Episode of care An episode of care refers to all contiguous inpatient hospitalizations and same-day surgery visits. For episodes with transfers within or between facilities, transactions were linked regardless of diagnoses. To construct an episode of care, a transfer is assumed to have occurred if either of the following conditions is met: a) An acute care hospitalization or a same-day surgery visit occurs less than seven hours after discharge from the previous acute care hospitalization or same-day surgery visit, regardless of whether the transfer is coded b) An acute care hospitalization or same-day surgery visit occurs between 7 and 12 hours after discharge from the previous acute care hospitalization or same-day surgery visit, and at least one of the hospitalizations or visits has coded the transfer Notes –For public reporting: Regional and provincial/territorial results are calculated by place of residence; facility results are calculated by place of service. –For facility-level reporting: For episodes of care that involved transfers, readmissions were attributed to the last hospital from which the patient was discharged before readmission. |
Calculation: Geographic Assignment |
Place of residence or service |
Calculation: Type of Measurement |
Rate - per 100 |
Calculation: Adjustment Applied |
The following covariates are used in risk adjustment: |
Calculation: Method of Adjustment |
Logistic regression |
Denominator |
Description: 2. Presence of at least one inpatient record in the episode with major clinical category (MCC) of Pregnancy and Childbirth (MCC = 13) 3. Discharge between April 1 and March 1 of the following year (period of case selection ends on March 1 of the following year to allow for 30 days of follow-up) 2. Records with an invalid code for province issuing health card number 3. Records with an unknown age 4. Records with an invalid admission date or time 5. Records with an invalid discharge date or time 6. Episodes with admission category of newborn (Admission Category Code = N) 7. Records with admission category of cadaveric donor or stillbirth (Admission Category Code = R or S) 8. Episodes with discharge as death, self sign-out or patient not returning from a pass (Discharge Disposition Code = 06, 07 or 12) 9. Presence of at least one record in the episode with MCC of Mental Diseases and Disorders (MCC = 17) 10. Presence of at least one record in the episode with palliative care (ICD-10-CA: Z51.5) coded as most responsible diagnosis (MRDx). For Quebec data: Z51.5 coded as MRDx, or cancer (C00–C97) coded as MRDx and Z51.5 coded in any secondary diagnosis field. For an illustration of denominator selection, please refer to the flowchart in the General Methodology Notes document. |
Numerator |
Description: 2. (Admission date on readmission record) − (Discharge date on the last record of the index episode of care) less than or equal to 30 days Exclusions: 1. Delivery (ICD-10-CA: O10–O16, O21–O29, O30–O37, O40–O46, O48, O60–O69, O70–O75, O85–O89, O90–O92, O95, O98, O99 with a sixth digit of 1 or 2; or Z37 recorded in any diagnosis field) 2. Chemotherapy for neoplasm (ICD-10-CA: Z51.1) as MRDx 3. Admission for mental illness (MCC = 17) 4. Admission for palliative care (ICD-10-CA: Z51.5) coded as MRDx. For Quebec data: Z51.5 coded as MRDx, or cancer (C00–C97) coded as MRDx and Z51.5 coded in any secondary diagnosis field 5. Records with an invalid admission date |
Rationale |
Urgent readmissions to acute care facilities are increasingly being used to measure institutional or regional quality of care and care coordination. Readmission rates can be influenced by a variety of factors, including the quality of inpatient and outpatient care, effectiveness of the care transition and coordination, and the availability and use of effective community-based disease management programs. While not all urgent readmissions are avoidable, interventions during and after a hospitalization can be effective in reducing readmission rates. |
Interpretation |
Lower rates are desirable. |
HSP Framework Dimension |
Health System Outputs: Appropriate and effective |
Areas of Need |
Getting Better |
Targets/Benchmarks |
Not applicable |
References |
Ashton CM, Wray NP. A Conceptual Framework for the Study of Early Readmission as an Indicator of Quality of Care. Soc Sci Med 1996;(43):1533-1541. Feudtner C. State-Level Child Health System Performance and the Likelihood of Readmission to Children's Hospitals. The Journal of Pediatrics. 2010;(157):98-102. Jencks SF, et al. Rehospitalizations Among Patients in the Medicare Fee-for-Service Program. N Engl J Med 2009;(360):1418-1428. Jiang HJ, Wier LM. All-Cause Hospital Readmissions Among Non-Elderly Medicaid Patients, 2007. HCUP Statistical Brief #89. Rockville, MD: AHRQ; 2010. Liu S, Heaman M, Joesph KS, et al. Risk of Maternal Postpartum Readmission Associated With Mode of Delivery. Obstet Gynecol Int 2005;(105):836-842. Stone J, Hoffman G J. Medicare Hospital Readmissions: Issues, Policy Options and PPACA. Washington, DC: CRS; 2010. |
Data Sources |
DAD, HMDB, NACRS |
Available Data Years |
Type of Year: |
Geographic Coverage |
All provinces/territories |
Reporting Level/Disaggregation |
National, Province/Territory, Region, Facility, Neighbourhood Income Quintile |
Update Frequency |
Every year |
Indicator Results |
Web Tool: |
Updates |
Not applicable |
Caveats and Limitations |
Not applicable |
Trending Issues |
Not applicable |
Comments |
Indicator results are also available in –The Health Indicators e-Publication (at regional, provincial/territorial and national levels, calculated by place of residence) (http://yourhealthsystem.cihi.ca/epub/?language=en), starting from 2010–2011 –Your Health System: Insight (https://www.cihi.ca/en/applications), updated monthly starting from 2013–2014 (results are available by both place of residence and place of service) |