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about abortion data

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  • For each data source, information about data collection and analytical methods, limitations, the citation and additional resources can be found on the Data Sources and Methods page.


Original Source: Hospital Therapeutic Abortions (TA): Canadian Institute for Health Information (CIHI), Non-hospital TAs: Ontario Ministry of Health and Long-Term Care
Cite as: Ontario Therapeutic Abortion Data, 2000-2012, IntelliHEALTH Ontario, Ministry of Health and Long-Term Care.


Data Collection Methods

  • In 2011, the MOHLTC revised the methodology for identifying TAs to include those terminations which occurred in Private Physician Offices (PPOs) and to exclude second abortions within 40 days of the first (as these were likely follow-ups/complications from the first procedure).
  • TA data are now captured by the Ontario Ministry of Health and Long-Term Care (MOHLTC) using a query of multiple hospital and medical services data sources.
  • The data include TAs to Ontario residents only.
  • TA data are based on the patient's residence, not where the TA was performed.
  • TAs completed in the hospital setting are captured through in-patient discharge and ambulatory care data sources.
  • Non-hospital TAs are captured using Medical Services data (OHIP approved claims paid)
  • Non-hospital TAs are separated into those completed within one of the five designated TA clinics which are funded by the MOHLTC (clinic) or outside of one of these clinics (e.g., private clinics, physicians' offices).
  • In Ontario, a TA performed due to detection of a congenital anomaly at >= 20 weeks gestation or where the product of conception is >= 500g should be registered as a stillbirth.

Analysis Methods

  • Rates and proportions based on counts less than five (5) must be suppressed.
  • Data elements available are: total number of TAs, number of TAs within 40 days of a previous TA (likely complications of the first procedure) and the adjusted number of TAs (total # TAs minus # TAs within 40 days).
  • The adjusted number of TAs for Ontario residents should be used.


  • TAs performed out-of-province are not included.
  • TA data are not available below the census division level.
  • Individual-level data are not available (they are pre-aggregated).
  • The number of health-care settings included in the data source has changed over time; this should be noted when using data prior to 2001. From 1986 to 1991, only hospital TAs were included. For the period 1992 to 2000, clinic and hospital TAs were included. For 2001 to the most recent year available, TAs in hospitals, clinics and private physician's offices are included. Therefore, trends over time should only be examined for 2001 and onward.


  1. POWER Study Reproductive and Gynaecological Health (February 2011)
  2. APHEO Core Indicators Therapeutic Abortion (TA) Data

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