Nationwide Utilization of Danish Government Electronic Letter System for Increasing InFLUenza Vaccine Uptake Among Adults With Chronic Disease
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 299,881
- 试验地点
- 2
- 主要终点
- Number of participants who received an influenza vaccine
研究概览
简要总结
In randomized clinical trials and observational studies, influenza vaccination has been shown to be effective in reducing influenza-related illness, hospitalizations, cardiovascular events, and mortality in select populations. However, the real-world effectiveness of influenza vaccination is limited by its uptake. This study will investigate whether digital behavioral nudges delivered via the official, mandatory Danish electronic letter system can increase influenza vaccine uptake among adults aged 18-64 years with chronic diseases.
详细描述
The study is a prospective, randomized, open-label implementation trial. The study population will consist of persons aged 18-64 years identified as eligible for free-of-charge influenza vaccination due to a chronic condition. Subjects will be identified through Danish nationwide health registries using codes from the International Classification of Diseases, 10th revision (ICD-10). Individuals will be randomized to 1 of 7 arms (1 usual care arm and 6 intervention arms) with each testing different nudging strategies employing various behavioural economic principles. The interventions will be delivered through the official, mandatory Danish electronic letter system. All subject data will be retrieved from the Danish nationwide registries with the exception of information on intervention allocation. Endpoints will be retrieved at prespecified dates using prespecified search algorithms.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Other
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 64 Years(Adult)
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Age 18-64 years
- •Must be registered in the Danish nationwide registries as meeting at least one of the following eligibility criteria for free-of-charge influenza vaccination in the Danish public health system:
- •Chronic lung disease
- •Chronic cardiovascular disease other than hypertension
- •Type 1 or type 2 diabetes mellitus
- •Congenital or acquired immunodeficiency
- •Impaired breathing due to muscular weakness
- •Chronic renal or hepatic insufficiency
- •Other chronic conditions with an increased risk of severe influenza as determined by the treating physician
- •Access to the official, mandatory Danish electronic mailbox system
排除标准
- 未提供
研究组 & 干预措施
Repeated Letter
The standard letter sent out two times instead of once
干预措施: Behavioral Economic Principles (Behavioral)
Standard Letter
This group will receive a standard letter on the benefits of influenza vaccination without behavioral economic enhancement
干预措施: Behavioral Economic Principles (Behavioral)
Cardiovascular Gain-Framing Letter
Text added to the standard letter highlighting potential cardiovascular benefits of influenza vaccination
干预措施: Behavioral Economic Principles (Behavioral)
Respiratory Gain-Framing Letter
Text added to the standard letter highlighting potential respiratory disease-related benefits of influenza vaccination
干预措施: Behavioral Economic Principles (Behavioral)
Implementation Intention Prompt Letter
Implementation intention prompt added to the standard letter
干预措施: Behavioral Economic Principles (Behavioral)
Loss-Framing Letter
Text added to the standard letter highlighting potential risks of not receiving influenza vaccination
干预措施: Behavioral Economic Principles (Behavioral)
Usual Care
No letter
结局指标
主要结局
Number of participants who received an influenza vaccine
时间窗: Up to 3 months
次要结局
- Time from intervention delivery to influenza vaccination(Up to 3 months)
研究者
Tor Biering-Sørensen
Professor, MD, MSc, MPH, PhD
Herlev and Gentofte Hospital
