Tingum Ernest N, Mukong Alfred K, Mdege Noreen
Department of Economics, University of Namibia, Windhoek, Namibia.
Research Unit on the Economics of Excisable Products, School of Economics, University of Cape Town, Cape Town, South Africa.
Tob Induc Dis. 2020 Jul 23;18:62. doi: 10.18332/tid/123424. eCollection 2020.
The health consequences of smoking are serious and have been frequently detailed. A reduction in tobacco-related mortality hinges upon the ability to reduce tobacco usage. There is overwhelming evidence that higher cigarette prices reduce the demand for cigarettes, but little is known about the combined effect of price and non-price policies. This paper seeks to extend the analysis of price elasticities by estimating the combined effect of changes in price and non-price legislations in South Africa.
Annual time-series data from 1961 to 2016 are used, with a policy index constructed to capture the instances of non-price tobacco legislation. We estimate the combined impact of changes in tobacco control policy on cigarette consumption using a vector error correction model (VECM) and a two-stage least squares (2SLS) model.
The estimated long-run own-price elasticities lie between -0.55 and -0.72, while the income elasticities lie between 0.39 and 0.49. The coefficients of the changing tobacco control policies and the changing market structure show that they contribute to a modest reduction in cigarette consumption. The short-run deviations from the steady state are presented using the error correction term (ECT).
Cigarette demand is responsive to cigarette prices and non-pricing policies but failure to control for non-pricing policies overstates the price effect. This suggests that both cigarette prices and non-pricing legislation are effective in reducing cigarette consumption.
吸烟对健康造成的后果十分严重,且已被频繁详细阐述。与烟草相关的死亡率降低取决于减少烟草使用的能力。有压倒性的证据表明,香烟价格上涨会降低对香烟的需求,但对于价格政策和非价格政策的综合影响却知之甚少。本文旨在通过估计南非价格变化和非价格立法的综合影响来扩展对价格弹性的分析。
使用1961年至2016年的年度时间序列数据,并构建一个政策指数来记录非价格烟草立法的情况。我们使用向量误差修正模型(VECM)和两阶段最小二乘法(2SLS)模型来估计烟草控制政策变化对香烟消费的综合影响。
估计的长期自身价格弹性在-0.55至-0.72之间,而收入弹性在0.39至0.49之间。不断变化的烟草控制政策和不断变化的市场结构的系数表明,它们对香烟消费的适度减少有贡献。使用误差修正项(ECT)来呈现与稳态的短期偏差。
香烟需求对香烟价格和非价格政策有反应,但未能控制非价格政策会高估价格效应。这表明香烟价格和非价格立法在减少香烟消费方面都是有效的。