Mobile Sensing of Smoking Behavior
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 发起方
- 入组人数
- 2
- 试验地点
- 2
- 主要终点
- Change in smoking behaviors as measured by an algorithm of social variables
研究概览
简要总结
Smokers will use a smartphone app on a smartphone provided for the study that will passively sense and record information about their activities. Information collected from the smartphone app will be used to develop future smartphone apps that will predict when an individual is at risk of smoking.
详细描述
Smokers will carry an Android-based smartphone, which they are to use as their own for one month. After using the smartphone for two weeks, they will abstain from smoking for 48 hours. The phone will passively sense and record information from onboard sensors and send that information to a central server. When server based algorithms detect a pattern of signals likely associated with smoking behavior, the smoker will be queried regarding their current state (smoking?, not smoking but likely to in the next 10 minutes?, etc.). Likewise, when smokers are about to smoke but were not queried, they can indicate they are about to smoke. This information will be used to update algorithms using machine learning techniques. As such, in this study investigators will gain knowledge that will increase understanding of antecedents of smoking behavior and improve the accuracy with which smoking risk can be detected.
研究设计
- 研究类型
- Interventional
- 分配方式
- Na
- 干预模型
- Single Group
- 主要目的
- Basic Science
- 盲法
- None
入排标准
- 年龄范围
- 18 Years 至 65 Years（Adult, Older Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •generally healthy
- •between the ages of 18 and 65
- •smoking of at least 10 cig/day of a brand delivering ≥ 0.5 mg nicotine (FTC method) for > 1 year AND an afternoon expired CO concentration >5 ppm (to confirm inhalation) or morning urinary cotinine > 100 ng/mL
- •willingness to carry and use a study smartphone as their own for one month
排除标准
- •inability to attend all required sessions
- •use of smokeless tobacco products
- •current use of nicotine replacement therapy or other smoking cessation treatment
结局指标
主要结局
Change in smoking behaviors as measured by an algorithm of social variables
时间窗: up to 4 weeks
phone calls (time, duration, coded identity of contact, including smoking status); SMS texting (time sent, coded identity of contact)
次要结局
- Change in smoking behaviors as measured by an algorithm of motion variables(up to 4 weeks)
- Change in smoking behaviors as measured by an algorithm of device interaction variables(up to 4 weeks)
- Change in smoking behaviors as measured by an algorithm of positioning variables(up to 4 weeks)
- Change in smoking behaviors as measured by an algorithm of environmental variables(up to 4 weeks)