Ability of smokers to reduce their smoking and its association with future smoking cessation
Ability of smokers to reduce their smoking and its association with future smoking cessation
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DOI：
10.1046/j.1360-0443.1999.9411097.x
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发表时间：
1999-01-01
期刊：
影响因子：
6
通讯作者：
Hyland, A
中科院分区：
文献类型：
--
作者：
Hughes, JR;Cummings, KM;Hyland, A
Aims. We examined whether cigarette smokers in the United States can significantly reduce their smoking and maintain this reduction and, if so, whether this predicts an increase or decrease in the probability of smoking cessation in the future. Design. Longitudinal observation study. Setting. The 22 US cities of the Community Intervention Trial for smoking cessation (COMMIT). Participants. The 1410 subjects who smoked at both baseline and at 2-year follow-up. Intervention. Public health efforts to prompt cessation in half the communities. Measurements. Self-reported cigarettes/day and abstinence at baseline, 2-year and 4-year follow-ups. Findings. At 2-year follow-up, 60% of the subjects had either not changed or increased their smoking, 17% had decreased their smoking by 5-25%, 15% by 24-49% and 8% by greater than or equal to 50%. Among the 40% who had reduced greater than or equal to 5% at 2-year follow-up, 52% reported maintaining that reduction at 4-year follow-up. Reduction in smoking at year 2 did not prospectively predict an increase or decrease in the probability of making a quit attempt; nor did it predict eventually quitting by year 4. Conclusions. A substantial minority of US smokers are able to reduce their smoking and maintain this for long periods of time. Smoking reduction neither promotes nor undermines cessation.
