Intern Health Study: 2020 Cohort Micro-Randomized Trial
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 2,286
- 试验地点
- 1
- 主要终点
- Average daily step count
研究概览
简要总结
The aim of this study is to evaluate the efficacy of gamified competition (delivered through a smartphone) for improving the physical activity and sleep of medical interns.
详细描述
Due to their high-stress workloads, medical interns tend to have lower sleep and decreased physical activity. The goal of this study is to evaluate the efficacy of gamified competition (delivered through a smartphone) for improving the physical activity and sleep of medical interns. During the study, they are teamed up by programs and institutions and competes with other teams, which aim to motivate them to have more physical activity and sleep duration during their internship year.
The primary aim of this study is to investigate whether introducing competition mechanisms into mobile health (mHealth) interventions can improve a medical intern's activity-related behavioral outcomes: daily step counts and sleep duration. The first secondary aim is to assess the time-varying competition effect on their behavioral outcomes. The second secondary aim is to evaluate how social cooperation (competing within the same institution or program) moderates the effect of competition on behavioral outcomes. The first exploratory aim is to assess the competition effect on study engagement and the second exploratory aim is to evaluate the competition effect on mental outcome, mood score.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- None
入排标准
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Medical intern during the 2020-2021 internship year
- •Downloaded app, completed consent and filled out baseline survey prior to June 16th, 2020
排除标准
- 未提供
研究组 & 干预措施
Competition arm
Programs with at least five interns were grouped into program-based teams. Interns within the same residency institution in programs that did not meet this criterion were grouped into institution-based teams, with a minimum of five participants per team.
For each week, an eligible team is randomized to either competition or non-competition group with 50/50 chance. For those randomized to competition arm, teams were assigned an opponent team according to a weekly equally randomly selected rule from three options: 1. total randomization, by which the opponent team was assigned regardless of institution and specialty; 2. within-institution randomization, by which two competing teams were from the same institution; 3. within-specialty randomization, by which two paired teams were from the same specialty. For each pair of competing teams, there was a 50/50 chance that they would compete on average daily step counts or average daily sleep minutes.
干预措施: Intern Health Study competition-related mobile notification (Behavioral)
Competition arm
Programs with at least five interns were grouped into program-based teams. Interns within the same residency institution in programs that did not meet this criterion were grouped into institution-based teams, with a minimum of five participants per team.
For each week, an eligible team is randomized to either competition or non-competition group with 50/50 chance. For those randomized to competition arm, teams were assigned an opponent team according to a weekly equally randomly selected rule from three options: 1. total randomization, by which the opponent team was assigned regardless of institution and specialty; 2. within-institution randomization, by which two competing teams were from the same institution; 3. within-specialty randomization, by which two paired teams were from the same specialty. For each pair of competing teams, there was a 50/50 chance that they would compete on average daily step counts or average daily sleep minutes.
干预措施: Intern Health Study mobile app (Behavioral)
Competition arm
Programs with at least five interns were grouped into program-based teams. Interns within the same residency institution in programs that did not meet this criterion were grouped into institution-based teams, with a minimum of five participants per team.
For each week, an eligible team is randomized to either competition or non-competition group with 50/50 chance. For those randomized to competition arm, teams were assigned an opponent team according to a weekly equally randomly selected rule from three options: 1. total randomization, by which the opponent team was assigned regardless of institution and specialty; 2. within-institution randomization, by which two competing teams were from the same institution; 3. within-specialty randomization, by which two paired teams were from the same specialty. For each pair of competing teams, there was a 50/50 chance that they would compete on average daily step counts or average daily sleep minutes.
干预措施: Intern Health Study mobile app competition scoreboard and history (Behavioral)
Non-competition group
For each week, an eligible team is randomized to either competition or non-competition group with 50/50 chance.
干预措施: Intern Health Study mobile app (Behavioral)
结局指标
主要结局
Average daily step count
时间窗: 7 days
Participants' daily step counts are recorded through a Fitbit or an apple watch. High step counts are considered a positive outcome as it indicates more physical activity. For teams randomized into competition arm and randomized to compete on step count, their average daily step count is compared with the average step count of the opponent team.
Average daily sleep minutes
时间窗: 7 days
Participant's nightly sleep duration (in minutes) is recorded through a Fitbit or an apple watch. High sleep duration is considered a positive outcome. For teams randomized into competition arm and randomized to compete on sleep duration, their average daily sleep minutes is compared with the average sleep minutes of the opponent team.
次要结局
- Average daily mood score(7 days)
研究者
Srijan Sen
Research Professor
University of Michigan