Patterson Jillian A, Roberts Christine L, Taylor Lee K, Ford Jane B
Clinical and Population Perinatal Health, Kolling Institute of Medical Research.
Centre for Epidemiology and Evidence, NSW Ministry of Health.
N S W Public Health Bull. 2014 Jun;24(4):153-8. doi: 10.1071/NB13008.
Postpartum haemorrhage rates have been increasing in NSW and internationally, and blood transfusion is required in severe cases. Using routinely collected administrative data provides a convenient method with which to monitor trends in both postpartum haemorrhage and associated transfusion use. In order for this to be feasible however, the reliability of reporting of the conditions needs to be assessed.
This study used linked data to compare the reporting of postpartum haemorrhage with transfusion as reported in the NSW Admitted Patient Data Collection (hospital data), with the same information obtained from the Perinatal Data Collection (birth data), for births in NSW from 2007 to 2010.
The rate of postpartum haemorrhage requiring blood transfusion was 1.0% based on the hospital data and 1.1% based on the birth data, with a rate of 1.7% if identifying cases from either source. Agreement between the two sources improved from fair to moderate over the time period.
Postpartum haemorrhage requiring transfusion recorded in the birth data shows only moderate agreement with hospital data, so caution is recommended when using this variable for analysis. Linkage of both datasets is recommended to identify birth information from birth data and postpartum haemorrhage with transfusion from hospital data until further validation work has been undertaken.
新南威尔士州及国际上产后出血率一直在上升，严重病例需要输血。利用常规收集的行政数据提供了一种监测产后出血及相关输血使用趋势的便捷方法。然而，为了使其可行，需要评估疾病报告的可靠性。
本研究使用关联数据，将新南威尔士州住院患者数据收集（医院数据）中报告的产后出血与输血情况，与从围产期数据收集（出生数据）中获得的相同信息进行比较，这些信息来自2007年至2010年在新南威尔士州的出生情况。
基于医院数据，需要输血的产后出血率为1.0%，基于出生数据为1.1%，如果从任一来源识别病例，该比率为1.7%。在这段时间内，两个来源之间的一致性从一般提高到中等。
出生数据中记录的需要输血的产后出血情况与医院数据仅显示中等一致性，因此在使用该变量进行分析时建议谨慎。建议将两个数据集关联起来，以便从出生数据中识别出生信息，并从医院数据中识别产后出血及输血情况，直到进一步开展验证工作。
