A Mobile App to Improve Participation in Following-up Cohorts
- Conditions
- ControlsParticipants of Longitudinal Cohort Studies
- Interventions
- Other: Usual data collection methodsDevice: RECAP_MyLife mobile app
- Registration Number
- NCT04714788
- Lead Sponsor
- Instituto de Saude Publica da Universidade do Porto
- Brief Summary
The main objective is to test the superiority of a newly developed mobile application - RECAP_MyLife - for data collection in cohort studies in order to increase participation in follow-up evaluations. We hypothesize that data collection through a mobile app will contribute to improvements in participation.
An accurate assessment of the potential benefits and drawbacks of using this mobile technology tool for data collection in cohort studies will be conducted. For such, the study will be conducted in three cohorts developed in different temporal, cultural, and geographic contexts, increasing the generalization of the results found. This evaluation is intended to contribute to the development of more appropriate tools for data collection and consequently to increase participation in epidemiological studies.
- Detailed Description
This is a multicenter, two-arm, parallel unmasked pragmatic randomized controlled trial with baseline and post-intervention (4 weeks from baseline) assessments. A convenience sample of participants of three population-based cohorts of individuals born very preterm and/or very low birth weight will be randomized and allocated 1:1 to either a mobile app intervention group or into the control arm (usual data collection methods).
Secondary aims of this study are:
1. To evaluate the usability and acceptability of the mobile app among cohort participants.
2. To investigate the potential Hawthorne effect on the results on physical activity behavior and mood status.
3. To measure the agreement between passively tracked physical activity by the mobile app and physical activity measured weekly with a self-reported questionnaire.
4. To measure the agreement between mood status collected by the mobile app through Ecological Momentary Assessment and mood status measured weekly with a self-reported questionnaire.
5. To survey participant's preferences about the different data collection methods.
Intention-to-treat approach will be applied in the data analysis.
Recruitment & Eligibility
- Status
- UNKNOWN
- Sex
- All
- Target Recruitment
- 310
- Individuals aged 16 years or over
- Individuals with no evidence of visual impairment, physical condition that may affect the ability to walk, or major cognitive or motor disabilities until the enrollment of the study
- Individuals owning a smartphone with an Android software version 7 or newer.
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description Control group Usual data collection methods Comparator will be the usual data collection method applied by the cohorts. Intervention group RECAP_MyLife mobile app RECAP_MyLife mobile app Participants in the intervention group will be instructed to use the mobile app daily for four weeks.
- Primary Outcome Measures
Name Time Method Participation Baseline Defined as the total number of individuals who give consent to participate divided by the number of eligible individuals invited for the study.
- Secondary Outcome Measures
Name Time Method Acceptability 4- weeks Post-intervention questionnaire
Hawthorne effect - Mood status 1-week It will be measure if the data collection method affects mood status, by comparing mood status at baseline with results collected over the study period ("Circumplex Mood Model" scale).
Completion rates 4- weeks Defined as the total number of participants who complete the follow-up evaluation divided by the number of participants who initiated the trial.
Usability 4-weeks System Usability Scale (SUS)
Agreement of information (mobile app vs. questionnaire on mood status) 4-weeks It will be assessed in the intervention arm, by comparing the results obtained from the mobile app with those obtained from the self-reported data collected by the "Circumplex Mood Model" scale.
Hawthorne effect - Physical activity 1-week It will be measure if the data collection method affects physical activity, by comparing physical activity behavior (IPAQ-S) at baseline with results collected over the study period.
Agreement of information (mobile app vs. questionnaire on physical activity) 4-weeks It will be assessed in the intervention arm, by comparing the results obtained from the mobile app with those obtained from the self-reported data collected by IPAQ-S questionnaire.
Preference of methods 4-weeks Participants of both arms will answer the following question: "If you could choose to participate through an app that measures your movements and asks you to fill in your emotions daily, or through short weekly online/mailed questionnaires, what would you choose? Why?"