Selection effects refer to the possibility that individuals with specific body weight tend to quit smoking [31]
This will offer you the best answer if you are wondering is passive smoking injurious
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9 If the amounts of NICODERM or NICORETTE products you are taking do not help you stop smoking, consider remaining at the higher dose for longer and talk with your healthcare provider about using more than one type of nicotine replacement therapy at the same time
The same categories were used to define water pipe smoking (defined as having even one or two puffs throughout their lifetime for ever-smoking water-pipe, whether it was smoked in the past 30 days as current-smoking, or not having used it within the last 30 days as ex-smoking), roll-your-own (RYO) cigarettes, and cigars (defined as consuming over 100 cigars in their lifetime to be classified as ever-smokers) as well