Cookies on the Gambling Commission website

The Gambling Commission website uses cookies to make the site work better for you. Some of these cookies are essential to how the site functions and others are optional. Optional cookies help us remember your settings, measure your use of the site and personalise how we communicate with you. Any data collected is anonymised and we do not set optional cookies unless you consent.

Set cookie preferences

You've accepted all cookies. You can change your cookie settings at any time.

Skip to main content


Gambling participation and the prevalence of problem gambling survey: Experimental statistics stage

Gambling Commission report produced by NatCen on the experimental statistics stage of the gambling participation and the prevalence of problem gambling survey.

Adherence to participant-selection instructions

You can view tables referenced in this section by downloading the file Tables A1 to A48 - Gambling Survey - Experimental statistics stage (XLSX)

Adherence refers to whether the household had correctly followed instructions on who should complete the survey. This was established by comparing the number of adults within the household completing the survey with the number of stated and eligible adults. In a single-adult household we would expect one participant and in a two-adult household we would expect two participants. For C2 (up to four adults) addresses only, in a three-adult household, three participants would be expected and in a four-plus adult household, four participants would be expected.

Non-adherence is where fewer participants than the number of intended participants (for example only one participant completed in a two-adult household) were recorded13. In households with multiple (potential) participants it is harder to get all eligible individuals to take part and for that reason we might expect adherence to be greater in C1 (up to two adults) households.

For C1 (up to two adults) households, 74 percent of households were adherent meaning that all eligible participants took part. In C2 (up to four adults) households, 61 per cent were adherent. This difference was statistically significant (Table A.16 Whether the household adhered to participant selection instructions, by experimental condition).


13 As birthdays for all household members were not collected in the questionnaire, it was not possible to conduct any analysis for adherence to the instruction that those with the two most recent birthdays were the ones to take part within the household selection for C1 (up to two adults) addresses.

Previous section
Completion rates in responding households
Next section
Duplicate cases
Is this page useful?
Back to top