Relationships between hand-rolled cigarettes and primary lung cancer: a Norwegian experience.

INTRODUCTION: Detailed smoking history of patients developing lung cancer is rarely known, especially not for users of hand-rolled cigarettes. In Norway, smoking hand-rolled tobacco is still popular, accounting for one-third of the total tobacco consume.
METHODS: A questionnaire-based study revealing detailed information about tobacco consume with consecutive inclusion of all persons developing lung cancer in Southern Norway 2002-2005.
RESULTS: In this unselected population with 479 patients with newly diagnosed lung cancer, 95% had a smoking history and 88% of ever-smokers had smoked primarily hand-rolled cigarettes. The hand-rolled cigarette smokers had smoked fewer cigarettes daily (15) and less pack-years of tobacco (34) than fabricated cigarette smokers (20, P < 0.0001 and 42, P = 0.021, respectively). Smoking hand-rolled cigarettes was considerably more frequent than expected from official sales statistics. Hand-rolled cigarette smoking revealed an odds ratio of 13 for developing lung cancer compared with smoking fabricated cigarettes.
CONCLUSION: In this unselected population with newly diagnosed lung cancer, nine out of 10 ever-smokers had smoked primarily hand-rolled cigarettes. Patients smoking hand-rolled cigarettes had a smoking history of fewer daily cigarettes and less pack-years tobacco consumed than fabricated cigarette smokers. In this study, hand-rolled cigarettes are more frequently used than shown in national statistics. Smokers of hand-rolled cigarettes may have a greatly increased risk for lung cancer compared with smokers of fabricated cigarettes.