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Field
Trial Start Date
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Before
August 01, 2021
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After
June 01, 2021
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Field
Last Published
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Before
June 18, 2022 10:26 AM
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After
August 31, 2022 02:00 PM
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Field
Intervention Start Date
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Before
August 22, 2022
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After
September 01, 2022
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Field
Intervention End Date
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Before
November 27, 2022
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After
November 30, 2022
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Field
Primary Outcomes (End Points)
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Before
Amount of walking (length, time) and amount of cycling (length, time)
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After
Amount of walking (length in meters, time in minutes)
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Field
Randomization Unit
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Before
Individual-level randomization by strata. For the randomization, we will create strata based on pre-treatment level of walking (high/low), pre-treatment level of cycling (high/low) and location by postal code. This is to ensure geograhical coverage and observations from all levels of pre-treatment activity.
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After
Individual-level randomization by strata. For the randomization, we will create strata based on pre-treatment level of walking in August 2022 (5 groups + 1 for missing), pre-treatment level of cycling in August 2022 (3 groups + 1 for missing) and location (Inner Tampere, Outer Tampere, Outside Tampere). This is to ensure geograhical coverage and observations from all levels of pre-treatment activity.
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|
Field
Planned Number of Clusters
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Before
2000 individuals
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After
5296 individuals
|
|
Field
Planned Number of Observations
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Before
2000 individuals
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After
5296 individuals
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|
Field
Sample size (or number of clusters) by treatment arms
|
Before
1000 individuals in control, 1000 individuals in treatment
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After
2647 individuals in control, 2649 individuals in treatment
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|
Field
Power calculation: Minimum Detectable Effect Size for Main Outcomes
|
Before
Walking: 40 meter change (2.3%)
Cycling: 60 meter change (7.8%)
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After
For our main variable of interest (individual-level daily walking): 2.5 minutes per individual per day (5.6% increase) and 115 meters per individual per day (7.2% increase).
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|
Field
Secondary Outcomes (End Points)
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Before
Amount of driving and use of public transport (length and time by mode), carbon footprint of transport
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After
Amount of cycling, driving and use of public transport (length and time by mode), carbon footprint of transport, API calls to measure user engagement with the application, survey responses
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