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. Author manuscript; available in PMC: 2013 Apr 1.
Published in final edited form as: Addiction. 2012 Feb 11;107(4):810–818. doi: 10.1111/j.1360-0443.2011.03722.x

Figure 1.

Figure 1

Adolescent sample: Item Characteristic Curves for DSM-IV Nicotine Dependence and Proposed DSM-5 Nicotine Use Disorder Symptoms

Note: n=135 for adolescent sample Item Response Theory analyses