Women Giving Birth by Caesarian Section and Undergoing Blood Transfusion During Birth Admission, by DHB of Domicile
- 1 Basic Facts
- 2 Brief overview of the measure
- 3 Application and interpretation of the measure
- 4 Calculation of the measure
- 5 Appraisal of the measure
- 6 Other items
- 7 Owner details
Stage of development
Potential or current usage
This indicator is used by the Health Quality and Safety Commission for the New Zealand Atlas of Variation.
Brief overview of the measure
Broad subject area: Maternity Specific aspect of care: Caesarian section and blood transfusion Population of interest: Women giving birth by Caesarian section Setting: Maternal care Level of focus: District Health Board
Rationale for selection
Excessive blood loss is a potentially life threatening complication of birth, however it is difficult to measure precisely. The requirement for blood transfusion can be used instead as a broad measure of excessive blood loss/ post-partum haemorrhage.
Type of measure
Domain(s) of quality
Application and interpretation of the measure
Stated intent of the measure
This measure can be used to compare levels of blood transfusion in mothers giving birth via Caesarian section between various District Health Boards in New Zealand. It can be used for quality improvement and benchmarking purposes regarding pregnancy complications.
Caveats - Considerations
Data includes New Zealand resident and non-resident population and is for 1 January-30 December 2009. Data source: Ministry of Health, 2012. New Zealand Maternity Clinical Indicators 2009. Please note that these data have been corrected since the initial release which erroneously included women aged 35 years in this analysis. For this reason numerators and rates will be slightly lower than those previously published.
Links to other measures
New Zealand Atlas of Variation New Zealand Maternity Clinical Indicators 2009
Level of health care delivery/setting
Maternal care settings by District Health Board
Women giving birth via Caesarian section
Calculation of the measure
Output of calculation
Data are presented as standard deviation from the mean. Standard deviation is a statistical measure of variation from a mean. Assuming that recorded instances are normally distributed (i.e. they are in the usual ‘bell-shaped curve’) 95% of all recorded instances would be expected to be within 2 standard deviations either side of the mean. The two ‘middle’ shades will be within one standard deviation of the mean.
Women giving birth by Caesarian section who require a blood transfusion during the same admission
Total number of women who undergo Caesarian section in a publicly funded hospital birth
Criteria/standard for optimal performance
There are no criteria for optimal performance; this measure is intended to benchmark regional differences in birth by Caesarian section.
The data is extracted from the Ministry of Health.
Method of extraction
No information available.
Appraisal of the measure
Availability of evidence to support application of the measure
The measure has been developed or endorsed by an organization that promotes rigorous development and use of clinical performance measures (at an international, national, regional or local level).
Evidence of feasibility and reliability of implementation
Availability of data - Required data elements for the measure can be gathered during routine practice activities
The subjects in the Atlas were chosen by a group of clinical experts and consumers based on clear criteria regarding the importance of the area and the likelihood there was unexplained variation in services.
Date of entry to library
Owner (Organisation name)
Health Quality and Safety Commission
Owner (Email contact)
Creator (Organisation name)
Health Quality and Safety Commission
Creator (Email contact)