“…In the present secondary analysis, we sought to evaluate tobacco withdrawal in opioid-dependent (OD) smokers vs. smokers without comorbid substance use disorders (SUDs) using data from five outpatient laboratory studies which were conducted at the University of Vermont by our research group and utilized a uniform platform of daily visits involving biochemical monitoring, assessment of withdrawal, and delivery of financial incentives contingent on smoking abstinence (Bradstreet et al, 2014; Dunn, Sigmon, Thomas, Heil, & Higgins, 2008; Dunn et al, 2010; Sigmon et al, 2015; Yoon, Higgins, Bradstreet, Badger, & Thomas, 2009). Also of interest was whether gender was a moderator of nicotine withdrawal given that prior literature in the general population has suggested an association between gender and tobacco withdrawal and/or craving (e.g., Eissenberg, Adams, Riggins, & Likness, 1999; Leventhal et al, 2007; Pang & Leventhal, 2013; Piasecki, Jorenby, Smith, Fiore, & Baker, 2003; Weinberger, Platt, Shuter, & Goodwin, 2016).…”