More evidence is needed, particularly on lifetime ULT smoking. The study was prematurely terminated due to cost overrun, limiting the power to detect an association. Risk in ULT smokers for 8 + years was substantially higher than in never smokers (OR 16.27, 95% CI 10.14–26.09). Other analyses showed a modest, not statistically significant, reduction in risk with tar reduction. Birine DM atabilmeniz iin o kiiyle takiplemek zorunda. DM atmak, Instagram veya Twitter’da, bir kullancnn baka bir kullancya zel mesaj yollamas anlamna gelmektedir. Eer DM ne demek biliyorsak, DM atmann anlamn da tahmin edebiliriz. After adjustment for sex, age, country, education, age of starting smoking, mean cigarette consumption and mean tar level 21–50 years before interview, the odds ratio (OR) was 0.73 (95% confidence interval (CI) 0.50–1.06). DM ne demek sorusunu, yazmzn DM nedir balnda aklamtk. The main analysis compares risk in those who, in the critical period, smoked ultra-low tar (ULT) cigarettes (machine yield ≤3 mg tar/cigarette) for 8 + years, with those who only smoked full flavour (FF) cigarettes (≥10 mg tar/cigarette). Analyses included never smokers, and those who smoked for at least 80% of the “critical period” from 2 to 20 years before diagnosis, ignoring those who ever smoked pipes or cigars, or chewed tobacco. Janette Burgess is a Rosalind Franklin Fellow, originally from Australia. Subjects completed a detailed questionnaire, including a lifetime smoking history. The analyses involved 3561 cases and 2301 controls with diseases not associated with smoking. We present analyses relating cigarette type to lung cancer based on a case-control study in five European countries.
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