Incentives for alternatives to the car in Northstowe

Feasibility of a randomised controlled trial of financial incentives to promote alternatives to the car in a new housing development

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

ISRCTN

Registry ID

ISRCTN12273570

Enrollment

132

Registered

2020-03-13

Start date

2021-10-04

Completion date

Unknown

Last updated

2023-10-30

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

Conditions

Prevention of disease Not Applicable

Interventions

Participants will be matched on baseline survey responses according to car access and baseline travel patterns and will be randomised to one of three groups. The randomisation will occur at the househ

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Adult aged 16 or over 2. Living in Northstowe 3. Have not previously claimed any travel incentives

Exclusion criteria

Exclusion criteria: 1. Aged under 16 2. Do not reside in Northstowe 3. Have previously claimed travel incentives

Design outcomes

Primary

Measure	Time frame
Current primary outcome measure as of 15/09/2021: 1. Recruitment rate expressed as the percentage of eligible participants that are randomised 2. Attrition rate: percentage of participants lost to follow up at 3 and 6 months 3. Incentive use measured via self-report questionnaire at 3 and 6 months and qualitative interviews with study participants at baseline, 3 and 6 months 4. Acceptability of intervention assessed through qualitative interviews with study participants from each study group at baseline, 3 and 6 months 5. Contamination: use of incentive outside household members measured via self-report questionnaire at 3 and 6 months and qualitative interviews with study participants at baseline, 3 and 6 months Previous primary outcome measure: 1. Recruitment rate expressed as the percentage of eligible participants that are randomised 2. Attrition rate: percentage of participants lost to follow up at 3, 6 and 12 months 3. Incentive use measured via self-report questionnaire at 3, 6 and 12 months and qualitative interviews with study participants at baseline, 3 and 6 months 4. Acceptability of intervention assessed through qualitative interviews with study participants from each study group at baseline, 3 and 6 months 5. Contamination: use of incentive outside household members measured via self-report questionnaire at 3, 6 and 12 months and qualitative interviews with study participants at baseline, 3 and 6 months	—

Measure

Time frame

Current primary outcome measure as of 15/09/2021: 1. Recruitment rate expressed as the percentage of eligible participants that are randomised 2. Attrition rate: percentage of participants lost to follow up at 3 and 6 months 3. Incentive use measured via self-report questionnaire at 3 and 6 months and qualitative interviews with study participants at baseline, 3 and 6 months 4. Acceptability of intervention assessed through qualitative interviews with study participants from each study group at baseline, 3 and 6 months 5. Contamination: use of incentive outside household members measured via self-report questionnaire at 3 and 6 months and qualitative interviews with study participants at baseline, 3 and 6 months Previous primary outcome measure: 1. Recruitment rate expressed as the percentage of eligible participants that are randomised 2. Attrition rate: percentage of participants lost to follow up at 3, 6 and 12 months 3. Incentive use measured via self-report questionnaire at 3, 6 and 12 months and qualitative interviews with study participants at baseline, 3 and 6 months 4. Acceptability of intervention assessed through qualitative interviews with study participants from each study group at baseline, 3 and 6 months 5. Contamination: use of incentive outside household members measured via self-report questionnaire at 3, 6 and 12 months and qualitative interviews with study participants at baseline, 3 and 6 months

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Secondary

Measure	Time frame
Current secondary outcome measures as of 15/09/2021: The secondary outcomes assess the change in travel patterns. The study is not powered for statistical testing, therefore the researchers will present descriptive statistics of the secondary outcomes at each follow up: 1. Self-report number of cars owned by household at baseline, 3 and 6 month follow up 2. Daily travel time (minutes) per mode of travel (bus/train/car/cycle/walk) measured via self-report questionnaire at baseline, 3 and 6 month follow up 3. Mode of travel to work (car/public transport/bicycle/walking) measured via self-report at baseline, 3 and 6 month follow up 4. Cost of travel by mode (car/public transport) measured via self-report questionnaire at baseline, 3 and 6 month follow up Previous secondary outcome measures: The secondary outcomes assess the change in travel patterns. The study is not powered for statistical testing, therefore the researchers will present descriptive statistics of the secondary outcomes at each follow up: 1. Self-report number of cars owned by household at baseline, 3, 6 and 12 month follow up 2. Daily travel time (minutes) per mode of travel (bus/train/car/cycle/walk) measured via self-report questionnaire at baseline, 3, 6 and 12 month follow up 3. Mode of travel to work (car/public transport/bicycle/walking) measured via self-report at baseline, 3, 6 and 12 month follow up 4. Cost of travel by mode (car/public transport) measured via self-report questionnaire at baseline, 3, 6 and 12 month follow up	—

Measure

Time frame

Current secondary outcome measures as of 15/09/2021: The secondary outcomes assess the change in travel patterns. The study is not powered for statistical testing, therefore the researchers will present descriptive statistics of the secondary outcomes at each follow up: 1. Self-report number of cars owned by household at baseline, 3 and 6 month follow up 2. Daily travel time (minutes) per mode of travel (bus/train/car/cycle/walk) measured via self-report questionnaire at baseline, 3 and 6 month follow up 3. Mode of travel to work (car/public transport/bicycle/walking) measured via self-report at baseline, 3 and 6 month follow up 4. Cost of travel by mode (car/public transport) measured via self-report questionnaire at baseline, 3 and 6 month follow up Previous secondary outcome measures: The secondary outcomes assess the change in travel patterns. The study is not powered for statistical testing, therefore the researchers will present descriptive statistics of the secondary outcomes at each follow up: 1. Self-report number of cars owned by household at baseline, 3, 6 and 12 month follow up 2. Daily travel time (minutes) per mode of travel (bus/train/car/cycle/walk) measured via self-report questionnaire at baseline, 3, 6 and 12 month follow up 3. Mode of travel to work (car/public transport/bicycle/walking) measured via self-report at baseline, 3, 6 and 12 month follow up 4. Cost of travel by mode (car/public transport) measured via self-report questionnaire at baseline, 3, 6 and 12 month follow up

—

Countries

England, United Kingdom

Contacts

Public ContactKate Garrott

kate.garrott@mrc-epid.cam.ac.uk+44 (0)1223 763378

Outcome results

None listed

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