Depression, Major Depressive Disorder, Nicotine Dependence
Conditions
Keywords
Smoking Cessation, Tobacco Use Cessation, Antidepressants
Brief summary
The primary purpose of this study is to determine whether, among smokers with elevated depressive symptoms, sequential antidepressant pharmacotherapy with fluoxetine (20 mg) begun 8 weeks prior to and extended throughout standard smoking cessation treatment with transdermal nicotine patch (ST-TNP) will result in superior short-and long-term smoking cessation outcomes compared to sequential pharmacotherapy with placebo medication combined with ST-TNP. The secondary aim of the study is to test the hypothesis that, among smokers with elevated depressive symptoms, sequential treatment with fluoxetine will result in lower levels of depressive symptoms and negative mood and higher levels of positive mood immediately prior to and throughout the course of smoking cessation treatment relative to the placebo condition.
Detailed description
Cigarette smoking is the leading cause of death and disability in the United States, accounting for over 430,000 deaths in this country every year. The selection hypothesis of smoking prevalence argues that smokers who are unable to quit successfully are likely to possess risk factors or characteristics that make it difficult to quit, such as nicotine dependence and psychiatric comorbidity. As such, significant strides in helping today's smokers quit will ultimately be found in the ability to develop specialized treatments that target the particular needs of subgroups of smokers, especially those who are at higher risk for relapse. Depression is the psychiatric disorder most frequently associated with cigarette smoking in adults and strong associations have been demonstrated between cigarette smoking and both depressive disorders and depressive symptoms. In fact, a prospective analysis from the National Health and Nutrition Examination Survey showed that smokers with elevated depressive symptoms were 40% less likely than nondepressed smokers to have quit nine years later. The development of an efficacious, specialized treatment of nicotine dependence for smokers with elevated depressive symptoms would address this need by providing physicians with an effective treatment alternative for the large number of smokers with depressive symptoms seen daily in clinical practice. This study examines the hypothesis that smokers with elevated depressive symptoms treated with fluoxetine 8 weeks prior to quitting and extended throughout 8 weeks of standard treatment with the nicotine patch post-quit will demonstrate superior cessation outcomes compared to placebo medication combined with standard treatment and the nicotine patch, administered with the identical treatment schedule. A secondary hypothesis is to examine whether reductions in depressive symptoms and negative mood and increases in positive mood will be greater for those in the sequential fluoxetine versus placebo condition.
Interventions
20mg once daily for 16 weeks
Once daily for 16 weeks
Sponsors
Study design
Eligibility
Inclusion criteria
* Regular smoker for at least one year * Currently smokes at least 10 cigarettes per day * Elevated depressive symptoms * Uses no other tobacco products
Exclusion criteria
* Current Axis I disorder, including Major Depressive Disorder * Psychoactive substance abuse or dependence (excluding nicotine dependence) within past year * Current use of psychotropic medication * Use of antidepressant medication within past 6 months * Current suicidal risk * History of significant medical illness, such as cardiovascular disease, neurological, gastrointestinal, or other systemic illness * Pregnancy or breast feeding * Use of nicotine replacement therapy or of any medication for smoking cessation not provided by the researchers during the quit attempt
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Number of Participants Achieving Smoking Abstinence | One year | 7-day point prevalence abstinence |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| Self-reported Depressive Symptoms | One year | Self-reported depressive symptoms based on the Center for Epidemiologic Studies-Depression (CES-D) scale. CES-D consists of 20 items, with total scores on the scale ranging from 0 - 60. Higher scores are indicative of greater levels of depressive symptoms. |
Countries
United States
Participant flow
Participants by arm
| Arm | Count |
|---|---|
| Sequential Placebo Participants received placebo medication, dextrose, that was begun 8 weeks prior to and extended throughout the brief, behavioral standard smoking cessation treatment that included transdermal nicotine patch.
The placebo medication (dextrose) was taken once daily for 16 weeks. | 99 |
| Sequential Fluoxetine Participants received fluoxetine medication, 20 mg, that was begun 8 weeks prior to and extended throughout the brief, behavioral standard smoking cessation treatment that included transdermal nicotine patch.
The fluoxetine medication (20 mg) was taken once daily for 16 weeks. | 107 |
| Total | 206 |
Baseline characteristics
| Characteristic | Sequential Placebo | Sequential Fluoxetine | Total |
|---|---|---|---|
| Age, Continuous | 44.05 years STANDARD_DEVIATION 11.4 | 43.07 years STANDARD_DEVIATION 10.97 | 43.54 years STANDARD_DEVIATION 11.16 |
| Center for Epidemiologic Studies - Depression (CES-D) > 16 | 15 Participants | 21 Participants | 36 Participants |
| Center for Epidemiologic Studies - Depression (CES-D) scale | 9.64 units on a scale STANDARD_DEVIATION 8.53 | 9.90 units on a scale STANDARD_DEVIATION 8.14 | 9.77 units on a scale STANDARD_DEVIATION 8.31 |
| Cigarettes smoked per day (past month) | 21.07 cigarettes STANDARD_DEVIATION 9.03 | 20.96 cigarettes STANDARD_DEVIATION 10.33 | 21.01 cigarettes STANDARD_DEVIATION 9.7 |
| Ethnicity (NIH/OMB) Hispanic or Latino | 1 Participants | 2 Participants | 3 Participants |
| Ethnicity (NIH/OMB) Not Hispanic or Latino | 98 Participants | 105 Participants | 203 Participants |
| Ethnicity (NIH/OMB) Unknown or Not Reported | 0 Participants | 0 Participants | 0 Participants |
| Fagerstrom Test for Nicotine Dependence (FTND) | 5.40 units on a scale STANDARD_DEVIATION 2.37 | 5.90 units on a scale STANDARD_DEVIATION 1.74 | 5.66 units on a scale STANDARD_DEVIATION 2.08 |
| Race (NIH/OMB) American Indian or Alaska Native | 4 Participants | 0 Participants | 4 Participants |
| Race (NIH/OMB) Asian | 0 Participants | 2 Participants | 2 Participants |
| Race (NIH/OMB) Black or African American | 5 Participants | 6 Participants | 11 Participants |
| Race (NIH/OMB) More than one race | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) Native Hawaiian or Other Pacific Islander | 1 Participants | 0 Participants | 1 Participants |
| Race (NIH/OMB) Unknown or Not Reported | 0 Participants | 0 Participants | 0 Participants |
| Race (NIH/OMB) White | 89 Participants | 99 Participants | 188 Participants |
| Recurrent major depressive disorder (MDD) | 18 Participants | 16 Participants | 34 Participants |
| Region of Enrollment United States | 99 participants | 107 participants | 206 participants |
| Sex: Female, Male Female | 48 Participants | 51 Participants | 99 Participants |
| Sex: Female, Male Male | 51 Participants | 56 Participants | 107 Participants |
| Single major depressive disorder (MDD) episode | 7 Participants | 7 Participants | 14 Participants |
Adverse events
| Event type | EG000 affected / at risk | EG001 affected / at risk |
|---|---|---|
| deaths Total, all-cause mortality | 0 / 107 | 0 / 99 |
| other Total, other adverse events | 1 / 107 | 0 / 99 |
| serious Total, serious adverse events | 0 / 107 | 0 / 99 |
Outcome results
Number of Participants Achieving Smoking Abstinence
7-day point prevalence abstinence
Time frame: One year
| Arm | Measure | Value (COUNT_OF_PARTICIPANTS) |
|---|---|---|
| Sequential Fluoxetine | Number of Participants Achieving Smoking Abstinence | 24 Participants |
| Sequential Placebo | Number of Participants Achieving Smoking Abstinence | 18 Participants |
Self-reported Depressive Symptoms
Self-reported depressive symptoms based on the Center for Epidemiologic Studies-Depression (CES-D) scale. CES-D consists of 20 items, with total scores on the scale ranging from 0 - 60. Higher scores are indicative of greater levels of depressive symptoms.
Time frame: One year
| Arm | Measure | Value (MEAN) | Dispersion |
|---|---|---|---|
| Sequential Fluoxetine | Self-reported Depressive Symptoms | 9.9 score on a scale | Standard Deviation 8.14 |
| Sequential Placebo | Self-reported Depressive Symptoms | 9.64 score on a scale | Standard Deviation 8.53 |