The Active Lives Survey involves up to 4 postal mail-outs designed to encourage participants to complete the survey online. A letter is sent to a household inviting up to 2 people per household to take part in the survey, either online or by requesting a paper version of the questionnaire.
The overall sample size is just under 200,000 people each year. The survey sample is randomly selected from the Royal Mail’s Postal Address File, which is a list of addresses in the UK that is maintained by the Royal Mail and has a very high coverage of private residential addresses.
Weighting is used to adjust the results of a survey to make them representative of the population and improve their accuracy.
For example, a survey which contains 25% women and 75% men will not accurately reflect the views of the general population, which we know has an even 50/50 split.
Statisticians rebalance or ‘weight’ the survey results to more accurately represent the general population. This helps to make them more reliable.
Data has been weighted to ONS population measures for geography and key demographics.
Suppression rules and disclosure control
Results are not published when they're based on fewer than 30 respondents.
Estimates in the charts and tables are given to the nearest whole number but all gaps and differences have been calculated on unrounded data.
You can download more detailed estimates (to 1 decimal place) if you download the data.