snuff at least 20 times and used chewing tobacco at least 20 times. A former smoker was a ‘Yes’ responder to at least one of the prior questions who also reported that he or she had not smoked or used tobacco in the past 12 months. (N.B. Very few, if any, of this latter group would have been experiencing withdrawal; thus, the current study is not an adequate test of post-cessation withdrawal as a predictor of SRO). A current smoker was a ‘Yes’ respondent who had smoked or used tobacco within the past 12 months. At the wave 2 interview, these same questions on tobacco use were asked with regard to the period since the last interview (in month/year).
