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Read about our methodology for collecting workforce data and how we calculate and create workforce estimates. Skills for Care has confidence in the quality of these estimates; the methodologies used have been peer reviewed by universities and an independent statistician.
We estimate the size, structure and characteristics of the adult social care workforce in England. Good quality information about the adult social care workforce is vital to help improve the planning and quality of social care services, which will improve outcomes for people who use these services, both now and in the future.
We use data collected in the Adult Social Care Workforce Data Set (ASC-WDS) to create workforce models that allow for estimates of the whole adult social care workforce to be produced.
Our methodology permits the analysis to be representative of all adult social care workers, even if the ASC-WDS has uneven levels of data coverage. All data is validated at source and has been through rigorous data quality checks before analysis.
Appendix A – Data collected through the ASC-WDS service - MS Excel spreadsheet
The ASC-WDS collects information about the adult social care sector and workforce. It's structured into two parts;
The workplace
The workforce
There is information recorded in the ASC-WDS for approximately half of the adult social care workforce. This coverage varies by care service, job role and geographical area.
For local authorities (adult social services departments), an annual data return submitted to the ASC-WDS is mandatory. Between 2012 and 2021, all 151 local authorities in England met the criteria of a full data return each year for people working in their adult social services departments. In 2022, all local authorities apart from Salford submitted a return. In 2023, Cumbria divided into two new local authority areas: Cumberland, and Westmoreland and Furness, however neither of the new areas provided a complete data return. In 2024, all local authorities submitted a complete data return, meaning we have data from every local authority with an adult social services department in England.
When local authorities do not provide a complete data submission, we use proxy information and estimations in place of the missing data.
For variables that are similar year on year, e.g. average age, gender and ethnicity, we use the previous year’s data as a proxy (where possible).
For variables that are likely to change e.g. starters, leavers, sickness and pay using a proxy is not possible. Instead, we use estimates to try and reduce the impact on national and regional totals.
CQC-regulated services make up a large proportion of care services in the ASC-WDS, as many establishments must be regulated by law. Our coverage of CQC-regulated establishments varies month by month but is typically around 50%. A sample of this size provides a solid basis for creating reliable and precise analysis about the adult social care workforce at both a national and local level.
We use data collected by the ASC-WDS to create workforce models that, in turn, allow for estimates of the whole adult social care workforce to be produced.
To do this, we make estimates of workforce characteristics (e.g. demographics, pay rates, employment statuses) for each geographical area, service type, employer type and job role combination that we report by. These estimates are then ‘weighted’ according to coverage/completeness of the sector in each of the above areas. For example, an area with 50% coverage would use more weighted data in the final analysis than an area with 90% coverage. Using this methodology allows for the analysis to be representative of all adult social care workers even if the ASC-WDS has uneven levels of data coverage.
Skills for Care is confident in the quality of these estimates and the methodologies used have been peer reviewed by universities and an independent statistician.
For a more detailed overview of how we create our workforce estimates, please download the ‘Methodology for estimating the size and characteristics of the adult social care workforce in England, 2024’ report at the top of this webpage.
Every effort is made to ensure that information derived from the ASC-WDS is reliable.
The following rounding rules have been applied to the ASC-WDS weighted workforce estimates.
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