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. 2010 Mar;12(3):207-16.
doi: 10.1093/ntr/ntp196. Epub 2010 Jan 15.

Exploring the role of a nicotine quantity-frequency use criterion in the classification of nicotine dependence and the stability of a nicotine dependence continuum over time

Orla McBride  1 , David R Strong, Christopher W Kahler
Affiliations

Exploring the role of a nicotine quantity-frequency use criterion in the classification of nicotine dependence and the stability of a nicotine dependence continuum over time

Orla McBride et al. Nicotine Tob Res. 2010 Mar.

Abstract

Introduction: This study investigated (a) the utility of a cigarette quantity-frequency (QF) use criterion as an indicator for nicotine dependence (ND) and (b) the stability of the ND continuum of severity over time.

Method: Data from individuals who smoked cigarettes in the year prior to both time points of the National Epidemiologic Survey on Alcohol and Related Conditions were analyzed (n = 6,185). The Alcohol Use Disorder and Associated Disabilities Interview Schedule DSM-IV Version (AUDADIS-IV) assessed for DSM-IV ND and nicotine use. Three QF criteria were created to represent daily consumption of > or = 5 cigarettes, > or = 10 cigarettes, or > or = 20 cigarettes. Confirmatory factor analysis and item response theory analysis were used to explore the latent structure of ND. Differential item functioning (DIF) analysis investigated the stability of the ND continuum over time.

Results: A one-factor model, representing the DSM-IV conceptualization of ND, was an acceptable fit to the data at both time points. The inclusion of QF criteria decreased the fit of the one-factor model of ND. DIF in the severity and discrimination parameters of the diagnostic criteria was evident across the time points of the survey.

Discussion: Although QF of cigarette use is related to ND, it appears to be a separate construct. Researchers using the AUDADIS-IV should be aware that the characteristics of the DSM-IV ND criteria do vary slightly across time, even though the changes appear to be relatively small and of minor clinical or practical significance.

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Figures

Figure 1.
Figure 1.
Plot of the item characteristic curves and total information curve for the seven DSM-IV nicotine dependence criteria for both National Epidemiologic Survey on Alcohol and Related Conditions time points.
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