A randomised controlled trial to determine the effect on response of including a lottery incentive in health surveys

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN32203485

Enrollment

8645

Registered

2004-09-10

Start date

2001-01-01

Completion date

Unknown

Last updated

2015-01-13

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Health survey incentives Not Applicable

Interventions

Lottery style incentive versus no incentive

Eligibility

Inclusion criteria

Inclusion criteria: General adult population receiving health survey

Exclusion criteria

Exclusion criteria: Not provided at time of registration

Design outcomes

Primary

Measure	Time frame
Not provided at time of registration	—

Secondary

Measure	Time frame
Not provided at time of registration	—

Countries

United Kingdom

Outcome results

None listed

Source: ISRCTN (via WHO ICTRP) · Data processed: Feb 4, 2026