Meade T W, Wald N J
Br J Prev Soc Med. 1977 Mar;31(1):25-9. doi: 10.1136/jech.31.1.25.
The rates at which people smoke cigarettes during different periods of the day were obtained from three occupational groups. Group 1 consisted of those working at the main London production site of a food processing factory, Group 2 consisted of those in the administrative offices of the same company; there are smoking restrictions at both. Group 3 consisted of workers in the offices of a London borough where there are no smoking restrictions. Replies were received from 3174 people, or 88% of those approached. There was a higher proportion on non-smokers (over 70%) among the two groups of office workers than among the food processing workers (about 55%). Smokers in Group 3 recorded somewhat higher average cigarette consumption than those in Groups 1 and 2. During different periods of the day, the maximum hourly rate of cigarette smoking was about three times the minimum rate. For Groups 1 and 2 the maximum rate was consistently during the interval between leaving work and going to bed. In contrast, the maximum rate for Group 3 was consistently during the afternoon, while at work, and the rate between leaving work and going to bed was similar to the rate for the day as a whole. Results will help in deciding the time of day at which blood for carboxyhaemoglobin estimations should be taken.
通过三个职业群体获取了人们在一天中不同时段的吸烟率。第一组由一家食品加工厂伦敦主要生产基地的工作人员组成，第二组由同一家公司行政办公室的人员组成；这两个地方都有吸烟限制。第三组由伦敦一个行政区办公室的工作人员组成，那里没有吸烟限制。共收到3174人的回复，占被调查者的88%。两组办公室工作人员中的非吸烟者比例（超过70%）高于食品加工工人中的非吸烟者比例（约55%）。第三组吸烟者的平均香烟消费量略高于第一组和第二组。在一天中的不同时段，每小时最高吸烟率约为最低吸烟率的三倍。对于第一组和第二组，最高吸烟率始终出现在下班到睡觉的时间段。相比之下，第三组的最高吸烟率始终出现在下午工作期间，而其下班到睡觉期间的吸烟率与全天的吸烟率相似。研究结果将有助于确定采集用于测定碳氧血红蛋白血液样本的最佳时间。
