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Data collections available for linkage

Master Linkage File (MLF)

The Master Linkage File (MLF) contains permanently linked references to multiple health-related data collections and registries in Queensland. The currency of the data included in the MLF is limited by the currency of data that is available in the source data collections. The scope and coverage of core health data collections and the period covered by the MLF for each of these collections, is outlined in the Queensland Data Linkage Framework (PDF, 315KB) (see page 21).

This page provides details of datasets that have been linked as part of the MLF or those commonly requested for departmental or research linkage requests. This is not an exhaustive list of health data collections available in Queensland. If you would like advice about how to access these datasets, the availability of other data collections in Queensland or the suitability of other data collections for linkage, please contact

Data collections included in the Master Linkage File (MLF)
(updated December 2020)

Collection titleTime period available
Elective Surgery Data Collection1 July 2015 to latest available
Emergency data1 July 2008 to latest available
Queensland Hospital Admitted Patient Data Collection(a) (QHAPDC)1 January 2000 to latest available
Queensland Perinatal Data Collection(a) (PDC)1 July 2007 to latest available
Queensland Health Non-admitted Patient Data Collection (QHNAPDC)1 July 2016 to 30 June 2019
Registrar General Births1 July 2007 to latest available
Registrar General Deaths1 January 2000 to latest available
Birth Notification1 January 2017 to latest available
Queensland Ambulance Service (QAS)1 July 2016 to latest available
Specialist Outpatient Data Collection1 June 2015 to latest available
Notifiable Conditions System (NOCS)1 January 2010 to latest available
Consumer Integrated Mental Health Application (CIMHA)1 January 2010 to latest available
Retrieval Services Queenslandavailable from start of collection
Surgery Connectavailable from start of collection

(a) Names and addresses for private facility and perinatal data were not supplied to the central data collection prior to 1 July 2007 so the quality of the linkage for these patients is questionable prior to this date and may result in bias in analysis undertaken using data from the period prior to 1 July 2007. For example, readmission rates for private hospitals may appear lower than for public hospitals due to failure to link data for private patients. For this reason, the MLF does not include data prior to 1 July 2007.

Data Collections scheduled to be added to the Master Linkage File

Collection titleEstimated time of inclusion in MLF

Vaccination Information and Vaccination Administration System (VIVAS)

Under negotiation

Data collections previously linked (but not in the MLF)

Collection titleData Custodian location


Queensland Department of Health
Pap Smear Registrer (PSR)Queensland Department of Health

Queensland Cancer Registry (QCR)

Queensland Department of Health

National Hospital Cost Data Collection (NHCDC) - Queensland

Queensland Department of Health

Queensland Trauma Registry (QTR)

Queensland Department of Health

Queensland Department of Correctional Services

External to Queensland Department of Health

Queensland Department of Transport and Main Roads (TMR)

External to Queensland Department of Health

Commonly requested data collections

Contact details for Data Custodians within the Queensland Department of Health (PDF, 235KB)

Last updated: 2 March 2016