Known previously as the Fagerström Tolerance Questionnaire 2 and Fagerström Test for Nicotine Dependence 3,4 the six-item FTCD is the most widely-used, brief measure of cigarette dependence. 5 The five-item Cigarette Dependence Scale 6 is also a brief and valid measure of cigarette dependence. The CDS-5 has psychometric properties similar to its parent measure, the CDS-12, but with less comprehensive content in terms of tapping compulsion, withdrawal symptoms, loss of control, time allocation, neglect of other activities, and persistence in smoking despite harm.Results of direct comparisons between the FTCD and the CDS have been mixed, with the vast majority of studies involving contrasts between the FTCD and CDS-12. In general, the FTCD and CDS-12 are moderately associated with each other and both are correlated positively with cigarettes per day and age at first daily smoking, 6-8 yet neither measure is associated significantly with the
Methods:This was a secondary analysis of data of pregnant smokers (N = 476) enrolled in a smoking cessation study. We assessed internal consistency, reliability, and examined correlations between the instruments and smoking-related behaviors for construct validity. We evaluated predictive validity by testing how well the measures predict abstinence 2 weeks after quit date. Results: Cronbach's alpha coefficient for the CDS-5 was 0.62 and for the FTCD 0.55. Measures were strongly correlated with each other, although FTCD, but not CDS-5, was associated with saliva cotinine concentration. The FTCD, CDS-5, craving to smoke, and withdrawal symptoms failed to predict smoking status 2 weeks following the quit date. Conclusions: Suboptimal reliability estimates and failure to predict short-term smoking call into question the value of including either of the brief measures in studies that aim to explain the obstacles to smoking cessation during pregnancy.