Welsh resident adults and children treated by Welsh Index of Multiple Deprivation (WIMD) quintile

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Next update expected:August 2026

Updates

22nd April 2026
Dataset first published.

Main information

Designation
Official statistics
Data provider 1
NHS Business Services Authority
Data source 1
Dental services
Data provider 2
Welsh Government
Data source 2
Welsh Index of Multiple Deprivation (WIMD)
Data provider 3
Office for National Statistics (ONS)
Data source 3
2021 Census
Time period covered
March 2022 to March 2025

Overview

Summary of dataset and variables

This StatsWales cube presents data for Welsh resident adults and children treated by Welsh Index of Multiple Deprivation (WIMD) quintile, for each 24-month period ending March for adults and each 12-month period ending March for children.

Data collection or calculation

Statistics are based on patients treated at dental practices in Wales. This means that this data includes non-Welsh residents treated in Wales but does not include Welsh residents treated outside of Wales. This is because Welsh Government has access to FP17W data from dental practices in Wales only.

A separate FP17W level dataset, supplied by NHS Business Services Authority, is used to derive counts of patients treated by patient characteristics. Totals derived from this dataset are higher than the equivalent headline figures published on StatsWales: Adults treated at Welsh dental practices over the last 24 months and Children treated at Welsh dental practices over the last 12 months because patients whose most recent treatment within a reference period took place in England, but who also received earlier treatment in Wales during that period, are excluded from the headline measures but retained in the FP17W‑level dataset. At Wales level, counts for adults treated over the last 24 months are no more than 0.9% higher, while counts for children treated over the last 12 months are no more than 4.3% higher.

Analyses are based on patient’s resident LSOA. If the patient resided in a lower level super output area (LSOA) (ONS) which was ranked among the most deprived 20% of LSOAs in Wales according to WIMD 2025 (WIMD 2019 for the reference periods ending March 2022, March 2023 and March 2024) the patient was allocated to deprivation quintile 1. This allocation continues for each 20% category, ending with patients that resided in LSOAs ranked among the least deprived 20% of LSOAs being allocated to deprivation quintile 5. Patients who resided outside of Wales are excluded from the analyses and are included in the ‘patient’s resident LSOA not known’ category.

For the percentage calculation, the denominator is based on the 2021 census population.

Data only available for the financial year ending in March 2022 onwards. As the adult measure is based on a 24-month reference period, the first year of available data is the 24-months ending March 2023.

The National Institute for Health and Care Excellence (NICE) recommends that adults are recalled for dental check-ups at intervals of three months to 24 months depending on the individual’s oral health status. The guidance also recommends that the longest recall period for children (aged under 18) is no longer than 12 months. Therefore, statistics on adults treated are based on the previous 24-month period; statistics for children refer to the previous 12-month period.

Each patient is counted only once even if they have received multiple episodes of care during the reference period.

Statistical quality

There are some patients each period who resided in Wales for their earlier treatment but subsequently resided in England for their latest treatment. As the latest records are retained, these Welsh patients are not included in the analyses and are included in the ‘Patient's resident LSOA not known’ category. The number is very small at less than 0.1% of all patients treated.

Related reports

Published by

Organisation
Welsh Government
Contact email
stats.healthinfo@gov.wales