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Dive into the research topics where Carol Duncan is active.

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Featured researches published by Carol Duncan.


Journal of Consulting and Clinical Psychology | 1996

Mood management and nicotine gum in smoking treatment : A therapeutic contact and placebo-controlled study

Sharon M. Hall; Ricardo F. Muñoz; Victor I. Reus; Karen L. Sees; Carol Duncan; Gary L. Humfleet; Diane T. Hartz

Earlier research indicated that a 10-session mood management (MM) intervention was more effective than a 5-session standard intervention for smokers with a history of major depressive disorder (MDD). In a 2 x 2 factorial design, the present study compared MM intervention to a contact-equivalent health education intervention (HE) and 2 mg to 0 mg of nicotine gum for smokers with a history of MDD. Participants were 201 smokers, 22% with a history of MDD. Contrary to the earlier findings, the MM and HE interventions produced similar abstinence rates: 2 mg gum was no more effective than placebo. History-positive participants had a greater increase in mood disturbance after the quit attempt. Independent of depression diagnosis, increases in negative mood immediately after quitting predicted smoking. No treatment differences were found in trends over time for measures of mood, withdrawal symptoms, pleasant activities and events, self-efficacy, and optimism and pessimism. History-positive smokers may be best treated by interventions providing additional support and contact, independent of therapeutic content.


Journal of General Internal Medicine | 1989

Training physicians about smoking cessation

Steven R. Cummings; Carol Duncan; Bruce Hansen; Rachel Vander Martin; Barbara Gerbert; Thomas J. Coates

Study objective:To test the hypotheses that physicians in private practice who receive a continuing education program (entitled “Quit for Life”) about how to counsel smokers to quit would counsel smokers more effectively and have higher rates of long-term smoking cessation among their patients.Design:Randomized trial with blinded assessment of principal outcomes.Setting:Private practices of internal medicine and family practice.Subjects:Forty-four physicians randomly assigned to receive training (24) or serve as controls (20) and consecutive samples of smokers visiting each physician (19.6 patients per experimental and 22.3 per control physician).Interventions:Physicians received three hours of training about how to help smokers quit. Physicians and their office staffs were also given self-help booklets to distribute to smokers and were urged to use a system of stickers on charts as reminders to counsel smokers about quitting.Measurements and main results:Based on telephone interviews with patients, physicians in the experimental group were more likely to discuss smoking with patients who smoked (64% vs. 44%), spent more time counseling smokers about quitting (7.5 vs. 5.2 minutes), helped more smokers set dates to quit smoking (29% vs. 5% of smokers), gave out more self-help booklets (37% vs. 9%), and were more likely to make a follow-up appointment about quitting smoking (19% vs. 11% of those counseled) than physicians in the control group. One year later, the rates of biochemically confirmed, long-term (≥9 months) abstinence from smoking were similar among patients in the experimental (3.2%) and control (2.5%) groups (95% confidence interval for the 0.7% difference: −1.7 to +3.1%).Conclusions:The authors conclude that this continuing education program substantially changed the way physicians counseled smokers, but had little or no impact on rates of long-term smoking cessation among their patients. There is a need for more effective strategies to help physicians help their patients to quit smoking.


Journal of General Internal Medicine | 1992

Quitting smoking: reasons for quitting and predictors of cessation among medical patients.

Carol Duncan; Cummings; Esther S. Hudes; Zahnd E; Thomas J. Coates

Objective:To describe why medical patients quit smoking and the methods they use.Design:Cross-sectional and prospective cohort design. Patient smokers were enrolled in a study of physician counseling about smoking. One year later, 2,581 of the patients were asked about quit attempts and methods used. Of those, 245 former smokers whose quitting had been biologically validated were interviewed about why and how they had quit.Setting:Offices of internists and family practitioners in private practice and a health maintenance organization.Subjects:Consecutive sample of ambulatory patients who smoked.Measurements and main results:Baseline questionnaires included demographic data, smoking history, and symptoms and diagnoses related to smoking. After one year, subjects were interviewed about smoking status and methods used in attempting to quit. Cessation was confirmed by biochemical testing. Those who had quit were asked about reasons for quitting. Seventy-seven percent of successful quitters gave health-related reasons for quitting and the quitters ranked “harmful to health” as the most important reason for quitting. In a multivariate analysis, those who had a college education, who had social pressures to quit, and who had greater confidence in being able to quit were more likely to have quit smoking one year later, while those who smoked their first cigarette within 15 minutes of awakening and who had more diagnoses related to smoking were less likely to have quit smoking one year later. Participation in a treatment program and having been counseled by a physician or nurse practitioner were positively related to successful quitting, while use of filters or mouthpieces was negatively related.Conclusions:Concerns about health are the most common reason patients give for quitting, and addiction is the most important barrier to quitting. Education, social pressure, provider advice, and formal programs, but not over-the-counter devices, appear to increase the chances that smokers will quit.


American Journal of Public Health | 1991

Staff involvement and special follow-up time increase physicians' counseling about smoking cessation: a controlled trial.

Carol Duncan; Morton J. Stein; Steven R. Cummings

We compared the counseling behaviors of two groups of health maintenance organization physicians: one group received training about smoking cessation counseling; the other group received the same training plus staff support and appointment time specially designated for follow-up of smokers. We interviewed patients after their office visits to measure smoking counseling. The group receiving staff support and designated follow-up time counseled more and made more follow-up appointments about smoking.


Nicotine & Tobacco Research | 2008

Hypnosis for Smoking Cessation: A Randomized Trial

Timothy P. Carmody; Carol Duncan; Joel A. Simon; Sharon N. Solkowitz; Joy Huggins; Sharon Lee; Kevin Delucchi

The purpose of this study was to determine whether hypnosis would be more effective in helping smokers quit than standard behavioral counseling when both interventions are combined with nicotine patches (NP). A total of 286 current smokers were enrolled in a randomized controlled smoking cessation trial at the San Francisco Veterans Affairs Medical Center. Participants in both treatment conditions were seen for two 60-min sessions, and received three follow-up phone calls and 2 months of NP. At 6 months, 29% of the hypnosis group reported 7-day point-prevalence abstinence compared with 23% of the behavioral counseling group (relative risk [RR] = 1.27; 95% confidence interval, CI 0.84-1.92). Based on biochemical or proxy confirmation, 26% of the participants in the hypnosis group were abstinent at 6 months compared with 18% of the behavioral group (RR = 1.44; 95% CI 0.91-2.30). At 12 months, the self-reported 7-day point-prevalence quit rate was 24% for the hypnosis group and 16% for the behavioral group (RR = 1.47; 95% CI 0.90-2.40). Based on biochemical or proxy confirmation, 20% of the participants in the hypnosis group were abstinent at 12 months compared with 14% of the behavioral group (RR = 1.40; 95% CI 0.81-2.42). Among participants with a history of depression, hypnosis yielded significantly higher validated point-prevalence quit rates at 6 and 12 months than standard treatment. It was concluded that hypnosis combined with NP compares favorably with standard behavioral counseling in generating long-term quit rates.


Psychological Services | 2013

Telephone-delivered cognitive-behavioral therapy for pain management among older military veterans: a randomized trial.

Timothy P. Carmody; Carol Duncan; Joy Huggins; Sharon N. Solkowitz; Sharon Lee; Norma Reyes; Sharon Mozgai; Joel A. Simon

This study investigated the effectiveness of telephone-delivered cognitive-behavioral therapy (T-CBT) in the management of chronic pain with older military veterans enrolled in VA primary-care clinics. We conducted a randomized clinical trial comparing T-CBT with telephone-delivered pain education (T-EDU). A total of 98 military veterans with chronic pain were enrolled in the study and randomized into one of two treatment conditions. Study participants were recruited from primary-care clinics at an urban VA medical center and affiliated VA community-based outpatient clinics (CBOCs). Pain management outcomes were measured at midtreatment (10 weeks), posttreatment (20 weeks), 3-month follow-up (32 weeks), and 6-month follow-up (46 weeks). No significant differences were found between the two treatment groups on any of the outcome measures. Both treatment groups reported small but significant increases in level of physical and mental health, and reductions in pain and depressive symptoms. Improvements in all primary outcome measures were mediated by reductions in catastrophizing. Telephone-delivered CBT and EDU warrant further study as easily accessible interventions for rural-living older individuals with chronic pain.


Psychology of Addictive Behaviors | 2012

Expectancies regarding the interaction between smoking and substance use in alcohol-dependent smokers in early recovery.

Timothy P. Carmody; Kevin Delucchi; Joel A. Simon; Carol Duncan; Sharon N. Solkowitz; Joy Huggins; Sharon Lee; Sharon M. Hall

The purpose of this study was to investigate expectancies regarding the interaction between cigarette smoking and use of alcohol among alcohol-dependent smokers in early recovery, using the Nicotine and Other Substances Interaction Expectancies Questionnaire (NOSIE). Participants were 162 veterans, 97% male, with a mean age of 50 years, enrolled in a clinical trial aimed at determining the efficacy of an intensive smoking cessation intervention versus usual care. At baseline, participants were assessed on measures of smoking behavior, abstinence thoughts about alcohol and tobacco use, symptoms of depression, and smoking-substance use interaction expectancies. In addition, biologically verified abstinence from tobacco and alcohol was assessed at 26 weeks. Participants reported that they expected smoking to have less of an impact on substance use than substance use has on smoking (p < .001). Severity of depressive symptoms was significantly associated with the expectancy that smoking provides a way of coping with the urge to use other substances (p < .01). The expectation that smoking increases substance urges/use was predictive of prospectively measured and biologically verified abstinence from smoking at 26 weeks (p < .03). The results add to our knowledge of smoking-substance use interaction expectancies among alcohol-dependent smokers in early recovery and will inform the development of more effective counseling interventions for concurrent alcohol and tobacco use disorders.


Nicotine & Tobacco Research | 2009

Sustained-release bupropion for hospital-based smoking cessation: a randomized trial.

Joel A. Simon; Carol Duncan; Joy Huggins; Sharon N. Solkowitz; Timothy P. Carmody

INTRODUCTION Bupropion is a first-line pharmacological aid for smoking cessation; however, no clinical trials have been conducted in a general population of hospitalized smokers. METHODS We enrolled 85 smokers in a hospital-based randomized smoking cessation trial conducted at the San Francisco Veterans Affairs Medical Center. A total of 42 participants received a 7-week course of sustained-release bupropion and 43 participants received placebo. All participants received cognitive-behavioral counseling. We screened 14,997 patients, of whom 25% were current smokers. Of the 536 smokers who met the entry criteria, 451 opted not to enroll. We determined on-medication, end-of-medication, 3-month, and 6-month smoking cessation rates. RESULTS At the end of 7 weeks of drug treatment, self-reported quit rates were equivalent in the bupropion and placebo arms, 37% versus 33%, respectively (p = .82). The validated quit rates for the bupropion and placebo groups were 27% versus 29%, respectively (p = 1.00). At 6 months, the self-reported quit rates were 29% in the bupropion group and 41% in the placebo group (p = .36). In a comparison of 6-month quit rates, validated either by salivary cotinine or by spousal proxy, we found nonsignificantly higher quit rates in the placebo group than in the bupropion group, 31% versus 15% (p = .12). DISCUSSION The addition of sustained-release bupropion to counseling did not increase quit rates, but the study was underpowered. Because of the secular trend toward shorter hospital stays, recruitment was very difficult, raising questions regarding the feasibility of future hospital-based smoking cessation trials and interventions.


American Journal of Clinical Hypnosis | 2017

Hypnosis for Smoking Relapse Prevention: A Randomized Trial

Timothy P. Carmody; Carol Duncan; Sharon N. Solkowitz; Joy Huggins; Joel A. Simon

The purpose of this study was to determine whether hypnosis would be more effective than standard behavioral counseling in helping smokers to remain abstinent. A total of 140 current smokers were enrolled in a randomized controlled smoking cessation trial at an urban Veterans Affairs medical center. Participants (n = 102) who were able to quit for at least 3 days received either a hypnosis or behavioral relapse prevention intervention. Both relapse prevention interventions consisted of two 60 min face-to-face sessions and four 20 min follow-up phone calls (two phone calls per week). At 26 weeks, the validate\d point-prevalence quit rate was 35% for the hypnosis group and 42% for the behavioral counseling group (relative risk = 0.85; 95% confidence interval: 0.52–1.40). At 52 weeks, the validated quit rate was 29% for the hypnosis group and 28% for the behavioral group (relative risk = 1.03; 95% confidence interval: 0.56–1.91). It was concluded that hypnosis warrants further investigation as an intervention for facilitating maintenance of quitting.


Annals of Internal Medicine | 1989

Training physicians in counseling about smoking cessation: a randomized trial of the Quit for Lifë program

Steven R. Cummings; Thomas J. Coates; Bruce Hansen; Elaine G. Zahnd; Rachel VanderMartin; Carol Duncan; Barbara Gerbert; Albert Martin; Morton J. Stein

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Joel A. Simon

University of California

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Joy Huggins

San Francisco VA Medical Center

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Sharon N. Solkowitz

San Francisco VA Medical Center

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Sharon Lee

University of California

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Sharon M. Hall

University of California

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Steven R. Cummings

California Pacific Medical Center

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