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THE RELATIONSHIP OF TOBACCO AND MARIJUANA SMOKING CHARACTERISTICS

机译：烟草和大麻的吸烟特性

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In an ongoing study of the pulmonary effects of heavy, habitual marijuana smoking, detailed marijuana and tobacco smoking histories were obtained from 467 adult regular smokers of marijuana and/or tobacco. Frequency and cumulative amounts of tobacco and marijuana smoking were similar for smokers and non-smokers of tobacco, except that pack-years and cigarettes/day at the time of the interview were both significantly less for tobacco smokers who also smoked marijuana compared those who did not. For all subjects who smoked both substances at any time, changes in tobacco and marijuana smoking amounts after commencement of regular smoking of the other substance were similar for tobacco and marijuana; the existing smoking habit decreased in approximately one third of the subjects and remained the same in slightly more than one half of the subjects. Of the dual smokers, 49% began smoking tobacco before marijuana, while 33% began smoking marijuana first; 85% of marijuana smokers who quit tobacco smoking did so after beginning regular marijuana smoking. Self-reported depth of inhalation and breath-holding time of marijuana smoke were similar for tobacco and non-tobacco smokers; smoking topography for tobacco was also comparable for smokers and non-smokers of marijuana. [References: 13]
机译：在一项正在进行的对大量习惯性抽烟的肺部影响的研究中，从467名定期吸食大麻和/或烟草的成年定期吸烟者中获得了详细的大麻和吸烟史。吸烟者和非吸烟者的吸烟频率和累积吸烟量相似，不同的是，采访时的吸烟年和吸烟年数，包装年数和吸烟日数均比吸烟者和吸烟者低得多。不。对于所有同时吸烟两种物质的受试者，开始定期吸烟另一种物质后，烟草和大麻的吸烟量变化与烟草和大麻相似;现有的吸烟习惯在大约三分之一的受试者中减少，而在略多于一半的受试者中保持不变。在双重吸烟者中，有49％的人开始在大麻之前吸烟，而33％的人首先开始吸烟。开始抽大麻后，戒烟的大麻吸烟者中有85％这样做了。烟草和非烟草烟民的自我报告的吸入深度和屏气时间相似。吸烟者的吸烟地貌也与吸烟者和不吸烟者的大麻相当。 [参考：13]

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