Gender differentials in the evolution of cigarette smoking habits in a general European adult population from 1993-2003.

Former smoking men also showed a decreasing trend in the total amount smoked when they quit (from 12 to 10 pack-years, p = 0.0091), but still had smoked twice as much as women former smokers, who tended to quit after 6 pack-years.

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Indeed, there was an increasing trend in pack-years smoked among women who had stopped smoking between 1993 and 2003.

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