A self-administered questionnaire for screening cigarette dependence was developed based on a set of 6335 Chinese adult smokers (termed the China Cigarette Dependence Test, CCDT). Both a 20-item version (CCDT-20) and a 7-item of the questionnaire (CCDT-7) were developed following 2-round of tests on their construct validity, test-retest reliability and internal consistency, covering seven dimensions (cigarettes per day, tolerance, withdrawal symptoms, craving, loss of control, regularity, and stereotypy). The results showed that the CCDT-20 and CCDT-7 scores were higher in daily smokers than in occasional smokers, and both were associated with self-rated nicotine dependence, exhaled carbon monoxide (CO), saliva cotinine, and DSM-V. The CCDT-20 and CCDT-7 scales were found to be easier to use by smokers in China and provided a more reliable measure of their cigarette dependence.
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