Where the data and information on Which? Birth Choice comes from.
The Birth Choice tool
This tool was devised as part of the Which? Birth Choice project. The scenarios that lie behind the tool were produced based on recommendations in guidelines from the National Institute for Health and Care Excellence (NICE) and the results of the Birthplace Study from the British Medical Journal in 2011. The tool continues to be updated according to updates to national clinical guidelines.
The scenarios, which take into account women’s personal preferences and circumstances, were tested with pregnant women and assessed by the Project Review Board. This review board was made up of a number of relevant experts including a consultant obstetrician, consultant midwives, a midwifery researcher and an experienced maternity services lay representative. This review was to ensure that the results generated by each scenario were clinically appropriate, whilst recognising women’s autonomy to make their own choices.
Information about NHS maternity units and birth centres in the UK
The units that are displayed on individual pages on this site come from a list of units that is compiled and kept by the Birth Choice team. If you know of a birth centre or labour ward that's not listed or if a unit has closed down recently please let us know by getting in touch at firstname.lastname@example.org.
The facilities and policies of individual units
From the number of birth pools to whether or not partners can stay overnight, much of the information on the facilities and policies of NHS units that we display on Which? Birth Choice is gathered through an annual audit directed towards Heads of Midwifery. We runs this audit every May. We're very grateful to all the maternity units who respond to our annual request for information and to the Royal College of Midwives for their help with this.
Where we have not had a response from a unit, we gather information through desk research and in some cases the contact information of a unit is obtained from NHS Choices.
Baby Friendly Awards
These are awarded by UNICEF as a measure of a maternity unit’s commitment to promoting breastfeeding. This data is available on their website and is provided to us by Rod Gibson Associates Ltd, as part of the BirthChoiceUK team. Data shown with permission from UNICEF.
Location of Neonatal Units
For England and Wales, location and levels of neonatal units are provided by the Neonatal Data Assessment Unit/National Neonatal Audit Programme. Shown with permission from the Neonatal Data Analysis Unit (NDAU).
For Scotland and Northern Ireland this has been compiled through desk research by BirthChoiceUK.
We display birth statistics to show how women give birth in different NHS maternity units and birth centres. If you’re an expectant parent, read our article on the top 10 birth statistics you should look out for when deciding where to give birth. Or if you're looking for more detail on the source of each statistic on the site read our guide to birth statistics on Which? Birth Choice.
Maternity statistics on Which? Birth Choice have been supplied by Rod Gibson Associates Ltd (part of the BirthChoiceUK team) using a number of official sources as outlined below. Please note that statistics about water births, birth centres and home birth have been supplied by maternity units themselves as part of our audit.
To help women make comparisons between their local labour wards and birth centres we've personalised the statistics wherever possible, showing them how women who are similar to them in terms of risk and number of previous births have given birth in different hospitals. This personalisation is only currently possible for England because our data providers BirthChoiceUK only have access to individual, anonymised records for England. We cannot show personalised statistics for women living in Scotland, Wales and Northern Ireland because we don't have access to the individual hospital records.
All individual hospital records used are anonymised so that no-one can be individually identified from their record.
Statistics for England are based on the number of women giving birth (“deliveries) rather than the number of babies born. Information about deliveries is derived from the Health and Social Care Information Centre (HSCIC) individual patient Hospital Episode Statistics (HES) records. HES data is used subject to the terms of an HSCIC Re-Use Agreement held by our data supplier Rod Gibson Associates Ltd.
HES data is subject to copyright © 2013, reused with the permission of the Health & Social Care Information Centre. All rights reserved.
Data cleaning methods, algorithms and the risk allocation method were initially developed by Rod Gibson Associates Ltd and were refined during a research project funded by the National Institute for Health Research Health Services Delivery Research programme (project number 10/1011/94) hosted by King’s College, London. The views and opinions expressed herein do not necessarily reflect those of the HS&DR Programme, NIHR, NHS or Department of Health.
Portions of this material are copyright of Rod Gibson Associates Ltd and copyright of King’s College London, 2012. The King’s College copyright material may be reproduced but must not be amended. If you wish to use the Rod Gibson Associates Ltd / King's College material or tools for commercial purposes please contact the college to request a licence.
If you want to know more about how the data is cleaned and analysed visit the BirthChoiceUK website.
Statistics, based on the number of live births, are derived from Welsh Government Maternity Statistics and the original data is available from the StatsWales website.
© Crown copyright used under the terms of the Open Government License.
To make the statistics more meaningful to you when choosing where to have your baby, all statistics types except planned caesarean/ spent time in labour have been adjusted to show percentages as a proportion of women who spent time in labour.
Maternity statistics for Scotland are based on the number of live births. Statistics are derived from Births in Scottish Hospitals and are published by ISD Scotland.
© copyright NHS National Services Scotland for the NHS Scotland and its agents. See the original data on the ISD website.
To make the statistics more meaningful to you when choosing where to have your baby, all statistics types except planned caesarean/spent time in labour have been adjusted to show percentages as a proportion of women who spent time in labour. Rounding during this process may have led to small inaccuracies in rates shown.
Birth statistics are obtained from the Northern Ireland Department of Health, Social Services and Public Safety and are based on the number of live births.
© Crown copyright used under the terms of the Open Government License.
Our small numbers policy
Data based on five or fewer women giving birth are treated as “small numbers” and are therefore not disclosed. Instead these data will be "suppressed”.
In accordance with HES protocol, any data suppression of percentages based on small numbers from Hospital Episode Statistics (HES) is performed by our data supplier, Rod Gibson Associates Ltd, before the statistics are received by Which?.
In the case of any small numbers, 0% is shown for that outcome, and a note included stating that the actual figure is not disclosed for reasons of confidentiality. When this happens, any corresponding percentage in a bar chart will be increased to 100%. While this is not completely accurate, we think it provides more useful information than showing no data for that hospital.
For freestanding midwife led units, the figure for total births in the unit shown on the unit page comes from government statistics. The total births for calculating statistics such as home births and transfers are provided by the maternity unit themselves through our annual audit. The difference between these figures may give rise to apparent small numbers if back calculation is performed using the official number of births as the denominator instead of the number provided to us. However, no percentages derived from small numbers appear on the site. Find out more about how this has been done.
Reviews of Maternity Units
All reviews of maternity units are taken directly from Care Opinion, under the Creative Commons licence and are not modified by us in any way. These reviews do not represent the views or opinions of Which? and Which? accepts no responsibility for their content.
Survey of Women's Experiences
The scores for women's experiences of maternity services have been taken from the Care Quality Commission (CQC) Maternity Services Survey 2015.
Photos of units
We are grateful to all Trusts who responded to our request to supply us with high quality photos of their units where possible. Thank you also to the maternity unit at Kingston University Hospital who kindly accommodated a photo shoot on their premises.
These are the sources of information used in this article:
Birthplace in England Collaborative Group, Perinatal and maternal outcomes by planned place of birth for healthy women with low risk pregnancies: the Birthplace in England national prospective cohort study, BMJ 2011;343:d7400 (2011)
National Collaborating Centre for Women's and Children's Health, Intrapartum care: care of healthy women and their babies during childbirth. NICE Clinical Guideline 190,London: National Institute for Health and Clinical Excellence (2014)