Coherence is the degree to which data which have been derived from different sources or methods but refer to the same topic are similar. Comparability is the degree to which data can be compared over time and domain.
There are no known alternative sources of data on which to compare these results.
Comparable data on the number of people setting a quit date and successful quitters, by age, gender, ethnicity and among pregnant women, has been collected and published since the introduction of NHS Stop Smoking Services in 1999/2000. NHS Digital has published these data since 2005; earlier reports are available from the Department of Health and Social Care.
National and regional totals from 2016/17 onwards have not been adjusted to estimate for those LAs who did not provide any data or only provided data for some quarters. Therefore, these totals are underestimates and not directly comparable with previous years.
From 2014/15 amendments were made to data requirements on the monitoring return for pharmacotherapy treatment received (part 1F); Intervention setting (part 1H) and financial information on smoking cessation services (part 2A) and this will affect comparisons over time and means these data will not be comparable with previous years.
Financial data may not be returned by LAs on a comparable basis and therefore caution should be exercised when making local level comparisons.
Data on Stop Smoking Services in Scotland can be found at:
Data on Stop Smoking Services in Wales can be found at: