Department of Medicine, UConn Health, 263 Farmington Ave., Farmington, CT 06030, USA.
Center for Alcohol and Addiction Studies, Brown University, Box G-S121-4, Providence, RI 02912, USA.
Addict Behav. 2022 Jul;130:107285. doi: 10.1016/j.addbeh.2022.107285. Epub 2022 Feb 17.
Hypothetical purchase tasks have been widely used to assess the reinforcing value of tobacco products. However, a task has not yet been validated for little cigars and cigarillos (LCCs), a popular tobacco product class among vulnerable populations. This study sought to validate the LCC Purchase Task (LCCPT) in a sample of experienced LCC smokers.
Data were collected from 65 young adult (18-34 years) LCC and cigarette dual users (78.5% male) in Connecticut (2018-2020). Participants completed the usual-brand LCCPT for consumption in 24 h at increasing prices. We calculated four observed demand indices: intensity (consumption at $0), breakpoint (price after which consumption reaches 0), O (maximum daily expenditure), and P (price at which daily expenditure was maximized). Two indices were estimated from demand curves: Q (predicted consumption as price approaches $0) and price-sensitivity (sensitivity to price increases). Spearman correlations and multivariable regressions examined the associations between demand indices, self-reported cigar use, and dependence.
Correlations were in expected directions. All indices except breakpoint and P were positively correlated with use, and all indices were correlated with multiple measures of dependence. Overall, greater demand and expenditure for LCCs and lower sensitivity to price changes were correlated with greater use and dependence. In regression analyses intensity and price-sensitivity showed the strongest relationships with use and dependence.
The validity of the LCCPT was supported in a sample of experienced LCC smokers. This instrument can be incorporated into other protocols to assess the abuse liability of LCCs.
假设性购买任务已广泛用于评估烟草产品的强化价值。然而，对于小雪茄和小雪茄（LCC），一种在弱势群体中流行的烟草产品类别，还没有一个任务得到验证。本研究旨在对经验丰富的 LCC 吸烟者样本中验证 LCC 购买任务（LCCPT）。
数据来自康涅狄格州的 65 名年轻成年（18-34 岁）LCC 和香烟双重使用者（78.5%男性）（2018-2020 年）。参与者完成了常规品牌的 LCCPT，用于在 24 小时内以递增价格消费。我们计算了四个观察到的需求指数：强度（0 美元时的消费）、断点（消费为 0 时的价格）、O（最大日支出）和 P（每日支出最大化时的价格）。从需求曲线中估计了两个指数：Q（价格接近 0 时的预测消费）和价格敏感性（对价格上涨的敏感性）。Spearman 相关和多变量回归检验了需求指数、自我报告的雪茄使用和依赖之间的关联。
相关性呈预期方向。除了断点和 P 之外，所有指数都与使用呈正相关，所有指数都与多种依赖度量相关。总体而言，对 LCC 的更高需求和支出以及对价格变化的较低敏感性与更大的使用和依赖相关。在回归分析中，强度和价格敏感性与使用和依赖的关系最强。
在经验丰富的 LCC 吸烟者样本中，LCCPT 的有效性得到了支持。该工具可以纳入其他方案中，以评估 LCC 的滥用倾向。
