AIHW - Maternity Indicators - Episiotomy for Women having First Birth for Instrumental Vaginal Births (%) (PHN) 2012-2016

This dataset presents the footprint of the percentage of women who had an episiotomy when giving birth for the first time and giving birth vaginally and instrumentally, by the mother's usual residence. This has been calculated with the number of females having their first baby who had an episiotomy during an instrumental vaginal birth, divided by the number of females having their first baby who gave birth vaginally and had an instrumental vaginal birth, and multiplied by 100. The data spans the years of 2012-2016 and is aggregated to 2015 Department of Health Primary Health Network (PHN) areas, based on the 2011 Australian Statistical Geography Standard (ASGS).\n\nThe data is sourced from the National Perinatal Data Collection (NPDC), which is a national population-based cross-sectional collection of data on pregnancy and childbirth. The data are based on births reported to the perinatal data collection in each state and territory in Australia. Midwives and other birth attendants, using information obtained from mothers and from hospital or other records, complete notification forms for each birth. A standard de-identified extract is provided to the Australian Institute of Health and Welfare (AIHW) on an annual basis to form the NPDC.\n\nFor further information about this dataset, please visit:\n\n * [Australian Institute of Health and Welfare - National Core Maternity Indicators Data Tables.](https://www.aihw.gov.au/reports/mothers-babies/ncmi-data-visualisations/data)\n\n * [Metadata Online Registry Entry.](https://meteor.aihw.gov.au/content/index.phtml/itemId/690076)\n\nPlease note:\n\n * AURIN has spatially enabled the original data using the [Department of Health - PHN Areas.](https://www1.health.gov.au/internet/main/publishing.nsf/Content/PHN-Home)\n\n * A birth is defined as an event in which a baby comes out of the uterus after a pregnancy of at least 20 weeks gestation or weighing 400 grams or more.\n\n * Included are those females who gave birth for the first time and had a vaginal birth, with or without instruments. Females who had a multiple birth are included if this was the first time they had given birth.\n\n * Excluded are those females who did not give birth for the first time or gave birth by caesarean section.\n\n * Instrumental vaginal birth means that the baby was delivered with the use of forceps or vacuum extraction.\n\n * Caution should be used when interpreting these results. There was no standardised collection across jurisdictions for the data used to derive this indicator.\n\n * For multiple births, the perineal status after the birth of the first-born baby was used.\n\n * From 2004 to 2013, a combined laceration and episiotomy value could be recorded; from 2014 onwards, episiotomy could be recorded separately.\n\n * Data were not available from Victoria for 2009.\n\n * The sum of the reported 'Grouped by' values may not equal the Australia total.\n

本数据集展示了按产妇常住地划分的首次经阴道助产分娩（产钳或负压吸引器助产）产妇中，接受会阴切开术（episiotomy）的比例情况。该比例的计算方式为：首次阴道助产分娩期间接受会阴切开术的产妇人数，除以所有首次经阴道助产分娩的产妇总人数，再乘以100。

本次数据覆盖2012至2016年，基于2011年澳大利亚统计地理标准（Australian Statistical Geography Standard, ASGS），数据聚合至2015年澳大利亚卫生部基层健康网络（Primary Health Network, PHN）分区。

本数据集源自全国围产期数据收集项目（National Perinatal Data Collection, NPDC），该项目是一项基于全国人口的妊娠与分娩横断面数据收集工作。数据基于澳大利亚各州及领地上报至围产期数据收集系统的分娩记录。助产士及其他接生人员会根据产妇提供的信息以及医院或其他相关记录，填写每一例分娩的通知表格。每年都会将标准化的去标识化数据提取件提交给澳大利亚卫生与福利研究所（Australian Institute of Health and Welfare, AIHW），以此构建NPDC数据库。

如需了解本数据集的更多信息，请访问：

* [澳大利亚卫生与福利研究所——全国核心产科指标数据表](https://www.aihw.gov.au/reports/mothers-babies/ncmi-data-visualisations/data)

* [元数据在线注册表条目](https://meteor.aihw.gov.au/content/index.phtml/itemId/690076)

请注意：

* 澳大利亚城市研究基础设施网络（AURIN）已借助[卫生部基层健康网络分区标准](https://www1.health.gov.au/internet/main/publishing.nsf/Content/PHN-Home)对原始数据完成空间化处理。

* 分娩定义为：妊娠满20周及以上或胎儿体重达400克及以上时，胎儿经子宫娩出的事件。

* 纳入统计的产妇为：首次分娩且接受经阴道分娩（无论是否使用助产器械）的女性；若为首次分娩，即使多胎妊娠也纳入统计范围。

* 未纳入统计的产妇包括：非首次分娩产妇，以及接受剖宫产（caesarean section）分娩的产妇。

* 阴道助产分娩指借助产钳（forceps）或负压吸引器（vacuum extraction）完成的胎儿娩出操作。

* 解读本数据集结果时需谨慎：各州领地在该指标相关数据的收集上并未采用统一标准。

* 多胎妊娠产妇的会阴情况统计以第一胎娩出后的状态为准。

* 2004年至2013年期间，会阴撕裂与会阴切开术的记录可合并上报；2014年起，会阴切开术可单独上报。

* 2009年维多利亚州未提供相关数据。

* 按「分组维度」上报的各项数据之和可能与澳大利亚全国总计值不完全一致。