McGrady G A, Ahluwalia J S, Pederson L L
Department of Community Health & Preventive Medicine, Morehouse School of Medicine, Drew-Meharry-Morehouse Consortium Cancer Center, Atlanta, GA 30310, USA.
Am J Prev Med. 1998 Feb;14(2):130-7. doi: 10.1016/s0749-3797(97)00025-1.
Data collected from a population of African Americans were analyzed to examine patterns of smoking initiation, smoking cessation, and factors related to smoking cessation.
Over a 4-month period, all (N = 2,928) patients attending an inner-city medicine clinic were recruited to participate in a smoking intervention trial. Over 99% participated, providing information on their smoking experiences, including smoking status (current, former, or never a smoker), duration of regular smoking, and year of quitting when applicable. Data on African Americans with complete information on these variables (n = 2,428) were analyzed with respect to initiation and duration of smoking.
More than half of African-American smokers in the population studied initiated regular smoking after age 19. Later age of initiation of smoking and female gender were associated with short duration smoking (i.e., quitting before 10 years of regular smoking); these variables, but not age, were identified as significant factors in a Cox Proportional Hazards model with duration of smoking as the outcome variable.
A sizable opportunity for primary prevention of regular smoking appears to exist among African Americans aged 20 to 30 years as evidenced by patterns of smoking initiation in the population studied. The importance of age at initiation of regular smoking to the duration of smoking is demonstrated in this population over a wide range of duration.
对从非裔美国人总体中收集的数据进行分析，以研究吸烟起始模式、戒烟情况以及与戒烟相关的因素。
在4个月的时间里，招募了一家市中心内科诊所的所有患者（N = 2,928）参与一项吸烟干预试验。超过99%的患者参与了试验，提供了他们的吸烟经历信息，包括吸烟状态（当前吸烟者、曾经吸烟者或从不吸烟者）、规律吸烟持续时间以及适用时的戒烟年份。对这些变量信息完整的非裔美国人（n = 2,428）的数据进行了吸烟起始和持续时间方面的分析。
在所研究的总体中，超过一半的非裔美国吸烟者在19岁以后开始规律吸烟。吸烟起始年龄较晚和女性性别与吸烟持续时间较短相关（即规律吸烟10年之前戒烟）；在以吸烟持续时间为结果变量的Cox比例风险模型中，这些变量而非年龄被确定为显著因素。
在所研究的总体吸烟起始模式表明，20至30岁的非裔美国人中似乎存在着进行规律吸烟一级预防的可观机会。在该总体中，广泛的吸烟持续时间范围内，规律吸烟起始年龄对吸烟持续时间的重要性得到了证明。
