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On what day should the encounter occur?
- At what time should the encounter start?
- How long should the encounter window stay open?
- Should the encounter repeat? If so, how many days, weeks?
- Should there be feedback (i.e. messages, compliance, etc.) based on encounter outcome?
Case Example: 1-month physical activity study with daily lottery incentive for meeting goal of >10,000 steps and text weekly check ins
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