No additional data were collected until the participant achieved 24 hr of abstinence and attended the Quit Week appointment. selleck catalog Demographic Variables and Smoking Quantity Age, gender, ethnicity, marital status, years of education, and number of cigarettes smoked on a typical day were assessed during the screening telephone call prior to entry into the study. Body Mass Index Height was measured on a wall-mounted stadiometer. Weight was recorded on a Scale-Tronix 5600 electronic scale. Body Mass Index (BMI) was calculated as kilograms per square meter. Heart Rate Heart rate was measured at baseline using an automated blood pressure device (DINAMAP Procare 120, www.gehealthcare.com; last accessed 12 July 2011).

Craving and Withdrawal Symptoms Craving was measured at baseline with the following two questions, ��Have you felt cravings for a cigarette?�� and ��Have you felt strong urges to smoke?�� Participants rated how upsetting cravings and urges had been in the past 24 hr on a scale of 0 = none to 6 = extremely upsetting. A craving score was calculated by averaging the two items. Withdrawal symptoms were assessed by asking how much they had experienced each symptom over the past 24 hr (0 = none to 4 = severe). Modified Fagerstr?m Tolerance Questionnaire This questionnaire (modified Fagerstr?m Tolerance Questionnaire [mFTQ]) was administered at baseline and consists of five questions designed to assess tobacco dependence (Killen, Fortmann, Telch, & Newman, 1988). The mFTQ is a modified version of the instrument first developed by Fagerstr?m (1978) as a self-report assessment of level of nicotine dependence.

The modified questionnaire consists of the following five questions: ��When you are in a place where smoking is forbidden, is it difficult for you not to smoke?�� ��Do you smoke more in the morning than during the rest of the day?�� ��Do you smoke even when you are so ill that you have to stay in bed most of the day?�� ��How deeply do you inhale?�� and ��How soon after you wake up in the morning do you smoke your first cigarette?�� Scores on the mFTQ range from a minimum of 5 to a maximum total of 25. Depression Symptoms Depression symptoms were measured with the 20-item Center of Epidemiological Studies depression instrument (Center for Epidemiological Studies Depression Scale [CES-D]; Radloff, 1977).

Participants were asked to indicate the number of days (0�C7) they felt or behaved in particular ways (i.e., did not feel like eating or had a poor appetite; feel life had been a failure) during the past week. History of Major Depressive Disorder A screen for current Major Depressive Disorder (MDD) and past history of MDD was administered at the baseline visit using the mood disorders portion of the Structured Clinical Interview for the ��Diagnostic and Statistical Manual of Mental Disorders�� (SCID), fourth edition (DSM-IV; AV-951 First, Spitzer, Gibbon, & Williams, 1996).