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. 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).
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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. Subjects completed a detailed questionnaire, including a lifetime smoking history. supported for drag and drop sort of accounts. You can set by Settings- Basic- Timeline- View direct messages as conversations.
The analyses involved 3561 cases and 2301 controls with diseases not associated with smoking. added option to view direct messages as conversations. Again, the Close DM option is not a permanent solution to delete the chat thread with that particular user and you’re merely closing and hiding the thread.
We present analyses relating cigarette type to lung cancer based on a case-control study in five European countries.
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