National Health Performance Authority, Hospital Performance: Median waiting time for elective surgery 2012-13

Identifying and definitional attributes

Metadata item type:Indicator
Indicator type:Progress measure
Short name:Median waiting time for elective surgery 2012-13
METeOR identifier:532942
Registration status:National Health Performance Authority (retired), Retired 01/07/2016
Description:Median waiting time for elective surgery in public hospitals.
Indicator set:National Health Performance Authority: Hospital performance: 2011-16 National Health Performance Authority (retired), Retired 01/07/2016

Collection and usage attributes

Computation description:Median waiting time for elective surgery in public hospitals.
Computation:

n (number of observations) x p (percentile value divided by 100) = i (integer) + f (fractional part of n x p)

  • If n x p is an integer, then the percentile value will correspond to the average of the values for the ith and (i+1)th observations.
  • If n x p is not an integer, then the percentile value will correspond to the value for the (i+1)th observation.
  • For example, if there were 100 hospital separations, the median will correspond to the average time for the 50th and 51st observations. If there were 101 observations, the median will correspond to the time for the 51st observation.

Median waiting times are rounded to the nearest 0.5 whole number of days.

Waiting times are calculated for patients whose reason for removal was:

  • For surgical specialty and indicator procedures:

1. Admitted as an elective patient for awaited procedure by or on behalf of this hospital or the state/territory.

  • For clinical urgency categories:

1. Admitted as an elective patient for awaited procedure by or on behalf of this hospital or the state/territory or

2. Admitted as emergency patient for awaited procedure by or on behalf of this hospital or the state/territory.

The calculation of waiting time excludes:

  • Any days the patient was waiting with a less urgent elective surgery urgency category than their urgency category at removal. When a patient's urgency category changes, existing NMDS business rules will apply.
  • People who were transferred to another hospital’s elective surgery waiting list, were treated elsewhere but not on behalf of the hospital, were not contactable, died prior to receiving their surgery or declined surgery.

For the purposes of reporting by urgency category, patients are reported as the final urgency category they were when treated.

Numerator data elements:
Data Element / Data SetElective surgery waiting list episode—waiting time (at removal), total days N[NNN]
Data Source
National Elective Surgery Waiting Times Data Collection
NMDS / DSS
Elective surgery waiting times (removals data) NMDS 2012-13
Data Element / Data SetElective surgery waiting list episode—reason for removal from a waiting list, code N
Data Source
National Elective Surgery Waiting Times Data Collection
NMDS / DSS
Elective surgery waiting times (removals data) NMDS 2012-13
Data Element / Data SetEstablishment—organisation identifier (Australian), NNX[X]NNNNN
Data Source
National Elective Surgery Waiting Times Data Collection
NMDS / DSS
Elective surgery waiting times (removals data) NMDS 2012-13
Disaggregation:Hospital, elective surgery urgency category, selected surgical specialties and indicator procedures
Disaggregation data elements:
Data Element / Data SetEstablishment—organisation identifier (Australian), NNX[X]NNNNN
Data Source
National Elective Surgery Waiting Times Data Collection
NMDS / DSS
Elective surgery waiting times (removals data) NMDS 2012-13
Data Element / Data SetElective surgery waiting list episode—indicator procedure, code NN
Data Source
National Elective Surgery Waiting Times Data Collection
NMDS / DSS
Elective surgery waiting times (removals data) NMDS 2012-13
Data Element / Data SetElective surgery waiting list episode—surgical specialty (of scheduled doctor), code NN
Data Source
National Elective Surgery Waiting Times Data Collection
NMDS / DSS
Elective surgery waiting times (removals data) NMDS 2012-13
Data Element / Data SetElective surgery waiting list episode—clinical urgency, code N
Data Source
National Elective Surgery Waiting Times Data Collection
NMDS / DSS
Elective surgery waiting times (removals data) NMDS 2012-13
Comments:Calculation of median waiting time: The median waiting time is calculated using an empirical distribution function with averaging in SAS@4. Using this method observations are sorted in ascending order.

Representational attributes

Representation class:Median
Data type:Real
Unit of measure:Time (e.g. days, hours)
Format:N[NN]

Indicator conceptual framework

Framework and dimensions:PAF-Effectiveness of access

PAF-Equity of access

Data source attributes

Data sources:
Data SourceNational Elective Surgery Waiting Times Data Collection
Frequency
Annual
Data custodian

Australian Institute of Health and Welfare


Accountability attributes

Other issues caveats:

Waiting time is calculated by states and territories by subtracting the listing date for care from the removal date, minus any days the patient was not ready for care and/or waiting with a less urgent clinical urgency category than their clinical urgency category at removal.

There are inconsistencies in application of urgency categories between and within states and territories which impact on the comparability of results.

Source and reference attributes

Submitting organisation:NHPA

Relational attributes

Related metadata references:

See also National Health Performance Authority, Hospital Performance: Median waiting time for elective surgery 2011-12 National Health Performance Authority (retired), Superseded 28/05/2014