Tobacco Use Disorder Clinical Trial
Official title:
Cognitive Training for Nicotine Dependence
Verified date | January 2017 |
Source | University of Pennsylvania |
Contact | n/a |
Is FDA regulated | No |
Health authority | |
Study type | Interventional |
This randomized clinical trial tested the effects of a computerized (web-based) cognitive
training intervention on smoking cessation.
All participants received 8 weeks of standard nicotine patch therapy, smoking cessation
counseling, and were randomized to 1 of 2 different training programs: cognitive training
vs. control training.
Status | Completed |
Enrollment | 213 |
Est. completion date | September 2015 |
Est. primary completion date | September 2015 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 18 Years to 65 Years |
Eligibility |
Inclusion: 1. Healthy male and female treatment-seeking smokers who are between 18 and 65 years of age and self-report smoking at least 5 cigarettes (menthol and/or non-menthol) per day for at least the last 6 months 2. Plan to live in the area for at least the next 8 months 3. Capable of giving written informed consent, which includes compliance with the requirements and restrictions listed in the combined consent and HIPAA form 4. Able to communicate fluently in English (speaking, writing, and reading) 5. Have uninterrupted access to a home computer with sound capabilities, keyboard, mouse, and active Internet connection 6. Provide a Carbon Monoxide (CO) breath test reading greater than or equal to 8 parts per million (ppm) at Intake Visit |
Country | Name | City | State |
---|---|---|---|
United States | Center for Interdiscplinary Research on Nicotine Addiction, University of Pennsylvania | Philadelphia | Pennsylvania |
Lead Sponsor | Collaborator |
---|---|
University of Pennsylvania |
United States,
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Point-prevalence Abstinence at End of Treatment | Daily smoking, from the Target Quit Date to End of Treatment (EOT), was assessed by a validated timeline follow-back measure. Based on guidelines for smoking cessation trials, the primary outcome was 7-day point prevalence abstinence at EOT, and abstinence was defined as no self-reported smoking (even a puff) for at least 7 days, with in-person verification by carbon monoxide breath levels (CO <8ppm). Following standard convention, participants who withdrew or were lost to follow-up were considered smokers. | End of treatment (Week 12) | |
Secondary | Point-prevalence Abstinence at 6-month Follow-up | Daily smoking from the Target Quit Date to 6 month follow-up was assessed by a validated timeline follow-back measure. Based on guidelines for smoking cessation trials, the secondary outcome was 7-day point prevalence abstinence at the 6 month follow-up, and abstinence was defined as no self-reported smoking (even a puff) for at least 7 days, with in-person verification by carbon monoxide breath levels (CO <8ppm). Following standard convention, participants who withdrew or were lost to follow-up were considered smokers. | 6 month follow-up | |
Secondary | Cognitive Performance (Working Memory) | Change in performance on the Digit Span Forward task (working memory) between Baseline and End of Treatment (Week 12). In this task, participants are presented with a series of digits on the computer screen at one second intervals. Participants are then required to enter the digits in order. The number of digits in each series ranges from 3 to 7, and the maximum recall span is the length of the largest series entered correctly. The outcome measure is the change score (calculated by subtracting the Baseline score from the end of treatment score). Change scores can range from -4 to 4. Negative numbers indicate worse performance at EOT; positive numbers indicate better performance at EOT; and 0 indicates no change. | Baseline and Week 12 (EOT) | |
Secondary | Cognitive Performance (Response Inhibition) | Change in performance on the Go/No-Go Task (response inhibition) between Baseline and End of Treatment (Week 12). In this task, participants are presented with a series of stimuli (the word "PRESS" in either green or red). Participants are instructed to respond by pressing the spacebar when the stimulus is green, and to withhold a response when the stimulus is red. The outcome is the change in number of commission errors (failure to withhold a response to a red stimulus) from EOT minus baseline. The potential range for the change score is -42 to 42. Negative numbers indicate a decrease in the number of commission errors (improved performance) from baseline to EOT; positive numbers indicate an increase in commission errors (worse performance); 0 indicates no change. | Baseline and Week 12 (EOT) | |
Secondary | Cognitive Performance (Attention) | Change in performance on the Continuous Performance Task (attention) between Baseline and End of Treatment (Week 12). In this task, participants are presented with a series of letters at 2.5s intervals and are instructed to respond by pressing the space bar if the same letter appears twice in a row. The outcome is the change in the number of commission errors (the number of times the participant responded to a non-target at EOT minus baseline). There are a total of 125 trials, with 20 target trials (response required) and 85 non-target trials (no response required); therefore the possible range for the change score is -85 to 85. Negative numbers indicate a decrease in commission errors (better performance at EOT compared to baseline); positive numbers indicate an increase in commission errors (worse performance at EOT compared to baseline); and 0 indicates no change. | Baseline and Week 12 (EOT) |
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