Lottery Incentive Nudges to Increase Influenza Vaccinations
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 57,581
- 试验地点
- 2
- 主要终点
- Flu Vaccination at Appointment
研究概览
简要总结
In the current study, the study team will explore whether small incentives are effective at promoting flu vaccine uptake. The study is designed to compare the relative efficacy of incentives of equal perceived expected value (EV) or equal implementation costs, to assess whether people are more likely to get vaccinated in response to lotteries with very high payoffs than to small certain cash payout or slightly higher-probability, more moderate payoffs. In particular, given the potential appeal of official state lottery tickets, one study arm will receive a Pennsylvania scratch-off lottery ticket for getting a flu vaccine. A primary hypothesis is that lotteries will outperform simple reminders (encouraging respondents to get the flu shot at their upcoming appointment) and the standard of care, representing the ambient healthcare system and public health campaigns to increase vaccination.
详细描述
During the 2021-22 flu season, the study team will contact Geisinger patients who have a primary care or specialist appointment scheduled during flu season and encourage them to get a flu shot.
Patients will be randomized into 4 to 9 study arms, depending on a sample size projection completed in August 2021. Arms will test the relative efficacy of a variety of small monetary incentives on flu shot uptake. Incentives may include (a) a $1 Pennsylvania scratch-off lottery ticket (with top prize of $5,000), (b) $1 in cash, (c) entry into a raffle for $5,000 absent upfront odds, (d) entry into a raffle for $5,000, with 1-in-5,000 odds of winning, (d) entry into a raffle for $50, with 1-in-50 odds of winning, and (e) entry into a raffle for $500, with 1-in-500 odds of winning. There will be one no-contact control arm and at least 1 reminder control arm (with additional control arms added given sufficient sample size and additional message versions to be tested).
Included in the study will be current Geisinger patients 18+ years of age with no contraindications for flu vaccine who have an appointment scheduled during the study period with a provider who can administer the vaccine. The primary study outcomes will be the rates of flu vaccination and flu diagnosis during the 2021-22 season by targeted patients.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Prevention
- 盲法
- Single (Care Provider)
盲法说明
Providers who prescribe vaccination and diagnose conditions will not be randomized to study arms or informed of patient assignment. Although patients will not be explicitly informed of which arm they were randomized to, they will be aware of the messages they receive.
入排标准
- 年龄范围
- 18 Years 至 —（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Pennsylvania mailing address listed
- •Geisinger primary care provider (PCP) assigned
- •Upcoming appointment with PCP or select specialist who stocks and can administer the vaccine during the study period
排除标准
- •Has opted out of receiving messages from Geisinger on all modalities being tested
结局指标
主要结局
Flu Vaccination at Appointment
时间窗: 3 days after patient is randomized
Received flu vaccination at relevant PCP or specialty appointment.
次要结局
- Flu Complications(During the 2021-22 flu season (Up to 11 months, from the time the patient is randomized through July 31, 2022))
- Flu Vaccination Within 7 Days(Within 7 days of when patient is randomized)
- Flu Diagnosis(During the 2021-22 flu season (Up to 8 months, from the time the patient is randomized through April 30, 2022))