Effects of Very Low Nicotine Content Cigarettes and E-cigarette Characteristics on Smoking in Adolescents
试验速览
- 阶段
- 不适用
- 状态
- 已完成
- 入组人数
- 80
- 试验地点
- 2
- 主要终点
- Number of Cigarette Puffs Taken (0 to 20)
研究概览
简要总结
This study is designed to examine how the nicotine content of cigarettes and the nicotine concentration and flavors in e-liquids influence responses to and use of these products in adolescent smokers. Participants will complete a total of six sessions (an in-person screening/baseline session and five lab sessions.
详细描述
Adolescence is a critical developmental period for tobacco initiation and progression to regular use and dependence. The Food and Drug Administration (FDA) has the authority to establish standards for tobacco products for the protection of public health, including the authority to mandate a reduction in the nicotine content of all cigarettes to minimally addictive levels. Numerous studies have found that adult smokers who are switched to very low nicotine content (VLNC) cigarettes experience reductions in smoking rates, nicotine intake, nicotine dependence and abstinence-induced craving relative to those who use normal nicotine content (NNC) cigarettes. However, studies of VLNC cigarettes in adolescent smokers are limited and more information is needed to inform potential product standards. Furthermore, use of electronic nicotine delivery systems (ENDS), e-cigarettes or vaping devices, has increased dramatically in adolescents. Therefore, effects of VLNC cigarettes on smoking in youth should be examined in the context of vaping device availability. This study is designed to examine how the nicotine content of cigarettes and the nicotine concentration and flavors in e-liquids influence responses to these products in adolescents.
Participants will complete an in-person baseline session in which eligibility criteria are confirmed and background questionnaires are completed. Next, participants will complete five in-person lab sessions in which NNC or VLNC cigarettes are available (based on random assignment). During the first lab session, participants will test the assigned research cigarettes when no alternative product is available. During each of the four remaining lab sessions, smokers' responses to the assigned research cigarettes will be compared to their responses to a vaping device with the following characteristics: 1) no nicotine, tobacco flavor; 2) no nicotine, non-tobacco flavor; 3) moderate nicotine concentration, tobacco flavor; or 4) moderate nicotine concentration, non-tobacco flavor. In each session, after sampling and rating the subjective effects of the products available during that session, participants will make a series of 10 choices. Choices will be for either 2 puffs of the research cigarette, 2 puffs of the vaping device, or abstinence from puffing.
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
- Triple (Participant, Investigator, Outcomes Assessor)
盲法说明
Participants will be blind to the nicotine content of their assigned study cigarette and the nicotine dose of the e-liquid in the study vaping device. Investigators, research staff, and biostatisticians will also be blind to the conditions. E-liquid flavors will not be blinded.
入排标准
- 年龄范围
- 15 Years 至 20 Years（Child, Adult）
- 性别
- All
- 接受健康志愿者
- 是
入选标准
- •Adolescents who report current daily or near daily cigarette smoking for at least 3 months
- •Must have used an electronic nicotine device on a minimum of two lifetime occasions.
- •Breath Carbon Monoxide (CO) levels > 5 ppm (if < 5 ppm, then cotinine assay via NicAlert Strip = > 3)
- •Speak, comprehend, and read English well enough to complete study procedures
排除标准
- •Unwilling to use research cigarettes or ENDS as part of the study
- •Intention to quit smoking in the next 30 days
- •Using tobacco products (other than ENDS or roll-your-own tobacco) > 15 days in the past 30 days.
- •Any medical or psychiatric condition in which participation is likely to post a significant threat to health or for which the condition could interfere with the ability of the participant to fully participants (as determined by the LMP)
- •Self-reported illicit use of any drug except marijuana > 10 days in the past 30 days
- •Binge drinking alcohol (>10 days in the past 30 days, >4/5 drinks in a 2-hour period (female/male))
- •Pregnant or breastfeeding
- •CO reading > 80 ppm
- •Systolic BP outside the range of 90-159, diastolic BP outside the range of 50-99, or heart rate outside the range of 45-
- •Participants failing for any of these criteria will be allowed to re-screen once per criterion.
- •Indicating Yes on Questions 4-6 on the MINI with a suicide attempt in the past 2 years (if within the past 2-10 years, LMP approval required).
- •Having participated in another research study during the past year in which they were switched to reduced nicotine cigarettes for longer than one week.
结局指标
主要结局
Number of Cigarette Puffs Taken (0 to 20)
时间窗: 30-minute preference task
The number of cigarette puffs selected during a 30 minute choice procedure when no vaping device was available
Number of Cigarette Puffs Taken (0 to 20) When the Available Vaping Device Has 3mg/ml of Nicotine and Was Available in Tobacco Flavor
时间窗: 30-minute preference task
The number of cigarette puffs selected during a 30 minute choice procedure when the available vaping device has 3mg/ml of nicotine and was available in tobacco flavor
Number of Cigarette Puffs Taken (0 to 20) When the Available Vaping Device Has 3mg/ml of Nicotine and Was Available in Non-tobacco Flavors
时间窗: 30-minute preference task
The number of cigarette puffs selected during a 30 minute choice procedure when the available vaping device has 3mg/ml of nicotine and was available in non-tobacco flavors
Number of Cigarette Puffs Taken (0 to 20) When the Available Vaping Device Has 18mg/ml of Nicotine and Was Available in Tobacco Flavor
时间窗: 30-minute preference task
The number of cigarette puffs selected during a 30 minute choice procedure when the available vaping device has 18mg/ml of nicotine and was available in tobacco flavor
Number of Cigarette Puffs Taken (0 to 20) When the Available Vaping Device Has 18mg/ml of Nicotine and Was Available in Non-tobacco Flavors
时间窗: 30-minute preference task
The number of cigarette puffs selected during a 30 minute choice procedure when the available vaping device has 18mg/ml of nicotine and was available in non-tobacco flavors
次要结局
- Number of E-cig Puffs Taken (0 to 20) When the Available Vaping Device Contained 3mg/ml Nicotine and Was Available in Non-tobacco Flavors(30-minute preference task session)
- Carbon Monoxide Change From pre-to the Post-choice Task When no Vaping Device Was Available(30-minute preference task)
- Number of E-cig Puffs Taken (0 to 20) When the Available Vaping Device Contained 3mg/ml Nicotine and Was Available in Tobacco Flavor(30-minute preference task session)
- Number of E-cig Puffs Taken (0 to 20) When the Available Vaping Device Contained 18mg/ml Nicotine and Was Available in Tobacco Flavor(30-minute preference task session)
- Carbon Monoxide Change From pre-to the Post-choice Task When the Available Vaping Device Contained 18mg/ml Nicotine and Was Available in Tobacco Flavor(30-minute preference task)
- Number of E-cig Puffs Taken (0 to 20) When the Available Vaping Device Contained 18mg/ml Nicotine and Was Available in Non-tobacco Flavors(30-minute preference task session)
- Carbon Monoxide Change From pre-to the Post-choice Task When the Available Vaping Device Contained 3mg/ml Nicotine and Was Available in Tobacco Flavor(30-minute preference task)
- Carbon Monoxide Change From pre-to the Post-choice Taskwhen the Available Vaping Device Contained 3mg/ml Nicotine and Was Available in Non-tobacco Flavors(30-minute preference task)
- Carbon Monoxide Change From pre-to the Post-choice Task When the Available Vaping Device Contained 18mg/ml Nicotine and Was Available in Non-tobacco Flavors(30-minute preference task)