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Biomedical subjects

David B Abrams

Publications and source records attributed to David B Abrams.

At least 19 recordsLinked to original sources
PubMed2006

Applying transdisciplinary research strategies to understanding and eliminating health disparities.

This overview for the special issue of Health Education & Behavior on "Health Disparities and Social Inequities" briefly outlines the transdisciplinary (TD) approach to research and examines the scope of TD science. The need to embrace basic science as well as several domains of applied research is discussed along the TD "pipeline" from discovery to development to delivery to policy. The overview concludes with selected examples of the emerging TD science of disparities. One central challenge for a TD approach is the need to strengthen what is being called "the science of dissemination" along with improving the "dissemination of evidence-based science."

Ethnicity↗
PubMed2005

Correlates of motivation to quit smoking among alcohol dependent patients in residential treatment.

Substance use and smoking co-occur at high rates and substance abusers smoke more and have greater difficulty quitting smoking compared to the general population. Methods of increasing smoking cessation among alcoholics are needed to improve their health. This study investigated predictors of motivation to quit smoking among patients early in residential treatment for substance abuse. The 198 alcohol dependent patients were participating is a larger smoking study at an inner-city residential substance abuse treatment program. Motivation was measured by the Contemplation Ladder. A hierarchical multiple regression was conducted to assess whether perceived barriers to smoking cessation and self-efficacy about quitting were associated with motivation to quit smoking independent of the influence of degree of tobacco involvement, substance use, and comorbid depressive symptoms. Motivation was higher with longer previous smoking abstinence, fewer barriers to quitting, and greater self-efficacy but was not influenced by smoking rate, dependence, or gender. While the combination of alcohol and drug use, alcohol and drug problem severity, and depressive symptoms predicted motivation, no one of these variables was significant. Since barriers to change and self-efficacy are potentially modifiable in treatment, these could be salient targets for intervention efforts. This could be integrated into treatment by assessing barriers and providing corrective information about consequences and methods of overcoming barriers and by providing coping skills to increase confidence in one's ability to quit smoking.

Adult↗
PubMed2005

Reducing the cancer burden of lifestyle factors: opportunities and challenges of the Internet.

This paper focuses on the Internet as a tool for enhancing behavior and lifestyle changes to reduce the burden of cancer at a population level. The premise of this paper is that the Internet can and should be leveraged to bridge the chasm between basic science, clinical trials, and public health. Our focus is specifically on the opportunity to disseminate effective behavioral science interventions via the Internet in order to decrease the prevalence of behavioral risk factors for cancer. The examples herein are primarily drawn from tobacco use to illustrate issues that can be applied more generally to other behavioral risk factors for cancer. Four areas will be addressed: (1) the scientific basis and rationale for delivering lifestyle behavior change interventions via the Internet; (2) the need to determine the quality of Internet interventions; (3) methodological considerations in conducting evaluations of Internet interventions; and (4) recommendations for a transdisciplinary approach to Internet intervention development and evaluation.

Attitude to Health↗
PubMed2005

Initial evaluation of a real-world Internet smoking cessation system.

To significantly reduce smoking prevalence, treatments must balance reach, efficacy, and cost. The Internet can reach millions of smokers cost-effectively. Many cessation Web sites exist, but few have been evaluated. As a result, the potential impact of the Internet on smoking prevalence remains unknown. The present study reports the results, challenges, and limitations of a preliminary, large-scale evaluation of a broadly disseminated smoking cessation Web site used worldwide (QuitNet). Consecutive registrants (N=1,501) were surveyed 3 months after they registered on the Web site to assess 7-day point prevalence abstinence. Results must be interpreted cautiously because this is an uncontrolled study with a 25.6% response rate. Approximately 30% of those surveyed indicated they had already quit smoking at registration. Excluding these participants, an intention-to-treat analysis yielded 7% point prevalence abstinence (for the responders only, abstinence was 30%). A range of plausible cessation outcomes (9.8%-13.1%) among various subgroups is presented to illustrate the strengths and limitations of conducting Web-based evaluations, and the tensions between clinical and dissemination research methods. Process-to-outcome analyses indicated that sustained use of QuitNet, especially the use of social support, was associated with more than three times greater point prevalence abstinence and more than four times greater continuous abstinence. Despite its limitations, the present study provides useful information about the potential efficacy, challenging design and methodological issues, process-to-outcome mechanisms of action, and potential public health impact of Internet-based behavior change programs for smoking cessation.

Adolescent↗
PubMed2005

The efficacy of moderate-intensity exercise as an aid for smoking cessation in women: a randomized controlled trial.

Evidence suggests that vigorous-intensity exercise interventions may be effective for smoking cessation among women; however, few studies have examined the efficacy of a moderate-intensity exercise program. The present study examined the efficacy of moderate-intensity exercise for smoking cessation among female smokers. Healthy, sedentary female smokers (N = 217) were randomly assigned to an 8-week cognitive-behavioral smoking cessation program plus moderate-intensity exercise (CBT+EX) or to the same cessation program plus equal contact (CBT). A subsample received nicotine replacement therapy. Results indicated that the CBT+EX and CBT groups were equally likely to attain smoking cessation at the end of treatment, as measured by cotinine-verified 7-day point-prevalence abstinence (20.2% for CBT+EX vs. 18.5% for CBT). The CBT+EX group was more likely to report smoking cessation, as measured by 7-day point prevalence at the 3-month follow-up (11.9% vs. 4.6%, p<.05), compared with the CBT group. No group differences were found at 12 months by either 7-day point prevalence (7.3% for CBT+EX vs. 8.3% for CBT) or continuous abstinence (0.9% for CBT+EX vs. 0.9% for CBT). Additionally, among participants in the CBT+EX group, those with higher adherence to the exercise prescription were significantly more likely to achieve smoking cessation at the end of treatment than were participants reporting lower adherence to exercise. Our findings indicate that the empirical support for moderate-intensity exercise as an adjunctive treatment to CBT for smoking cessation may be limited. Perhaps future studies could compare moderate- vs. vigorous-intensity physical activity to test their relative efficacy.

Adult↗
PubMed2004

Thinking about craving: an experimental analysis of smokers' spontaneous self-reports of craving.

This study evaluated whether smokers generate spontaneous expressions of craving (i.e., expressions of an urge, craving, desire, want, or need) in response to cues designed to provoke a craving state. In a 2 (smoking deprivation: 1 and 12 h) x 2 (cue type: neutral, active) within-subjects design, smokers were asked to think aloud in an unstructured way (i.e., "describe everything you are thinking and feeling right now"). Results revealed a main effect for cue type on think-aloud craving responses: Smokers spontaneously generated a greater number of craving-related cognitions during active cue exposure compared with neutral cue exposure, both during both 1- and 12-h deprivation. This same pattern of effects was not found for a self-report assessment of craving, which was insensitive to cue-provoked changes in craving in the 1-h deprivation condition. These results suggest that smokers do spontaneously experience craving, independent of an explicit assessment of craving and that think-aloud methods may provide a novel assessment of craving that may be relatively more sensitive than self-report methods under some circumstances.

Adult↗
PubMed2004

Effects of tobacco deprivation on alcohol cue reactivity and drinking among young adults.

Nicotine and alcohol may have common neurobiological mechanisms of reinforcement. Therefore, withholding one substance might result in compensatory increases in self-administration of the other. This laboratory study investigated the effects of brief tobacco deprivation on alcohol cue-elicited urges to drink, corresponding psychophysiological reactions, and alcohol consumption. Young adults (N=78) who were moderate to heavy smokers and drinkers were stratified and randomized to a 2 x 2 design. Participants were either deprived of tobacco for 5 h or not deprived and then exposed to in vivo alcohol or control beverage cues. Subsequently, participants engaged in a taste-rating task as an unobtrusive measure of alcohol consumption. Tobacco deprivation resulted in increased urge to smoke and decreased cardiovascular responses but did not increase alcohol urges or alcohol consumption. Results indicate that brief tobacco deprivation does not result in compensatory increases in alcohol consumption among young moderate to heavy drinkers.

Adult↗
PubMed2004

Adolescents' responses to the gender valence of cigarette advertising imagery: the role of affect and the self-concept.

The studies presented in this manuscript evaluated the role that affect and the self-concept play in adolescent never smokers' reactions to the gender valence of cigarette advertising imagery. Study 1 (n=29; 59% female) revealed that adolescent females have more positive affective reactions to female-valenced cigarette advertising imagery compared to male-valenced cigarette advertising imagery. Study 2 (n=101; 56% female) revealed that adolescent females viewed female-valenced cigarette advertising imagery as more relevant to their self-concepts compared to male-valenced cigarette advertising imagery. Across both studies, male adolescents did not respond differently as a function of the gender valence of cigarette advertising imagery. Thus, female-valenced cigarette advertising imagery may have specific effects on never smoking female adolescents by enhancing positive affect and suggesting that women who smoke hold the same characteristics as do the young women themselves.

Adolescent↗
PubMed2004

Who am I? The role of self-conflict in adolescents' responses to cigarette advertising.

Cigarette advertising may be partly responsible for adolescent smoking initiation, but few studies have investigated the advertising and individual difference factors that may be responsible. This study evaluated whether individual differences in the number of self-conflicts (i.e., conflicts between personality attributes experienced as part of self-concept development) interacts with stage of development (early versus middle adolescence) to predict responses to cigarette advertising imagery. One hundred and one never smoking adolescents judged the self-relevance of various cigarette advertisements. As predicted, self-conflict was related to judgments of self-relevance for early adolescents only; early adolescents who are having the most difficulty defining themselves are more likely to look to the powerful images displayed by cigarette advertisements for help. These results have implications for understanding the impact of cigarette advertising on smoking initiation for some adolescents.

Adolescent↗
PubMed2004

Motivational enhancement and coping skills training for cocaine abusers: effects on substance use outcomes.

AIMS: This clinical trial investigated effects of motivational enhancement treatment (MET) and group coping-skills training (CST) tailored for cocaine dependence. Effects of MET were hypothesized to be greater with CST and for less motivated patients. DESIGN AND INTERVENTIONS: A 2 x 2 design investigated two individual sessions of MET compared to meditation-relaxation (MRT), followed by four group sessions of CST versus drug education (ED), as daily adjuncts to intensive treatment. SETTING: The substance abuse program provided full-day treatment with a learning-theory and 12-Step orientation. PARTICIPANTS: Cocaine-dependent patients were recruited. MEASUREMENTS: Assessment included treatment retention; change in cocaine-related urge, self-efficacy, pros and cons, and motivation; substance use and problems during 12-month follow-up. Findings Of 165 patients, follow-up status is known for 90% (n = 149). Patients in MET with low initial motivation to change reported less cocaine and alcohol relapse and use days and fewer alcohol problems than MET patients with higher initial motivation. MET produced more employment improvement than MRT, with no other significant benefit for MET. Patients with higher motivation had more cocaine use and alcohol problems after MET than MRT. Group CST reduced cocaine and alcohol use during follow-up for women only and reduced alcohol relapse for men and women. CONCLUSIONS: MET is more beneficial for patients with lower initial motivation than for patients with high initial motivation. CST reduced cocaine and alcohol use for women only and reduced alcohol relapses, in contrast to results with lengthier individual CST.

Adaptation, Psychological↗
PubMed2003

Rationale, design, and baseline data for Commit to Quit II: an evaluation of the efficacy of moderate-intensity physical activity as an aid to smoking cessation in women.

BACKGROUND: Commit to Quit II is a 4-year randomized controlled trial comparing the efficacy of a cognitive-behavioral smoking cessation treatment plus moderate-intensity physical activity with the same cessation treatment plus contact control. METHODS: Sedentary women smokers (n = 217) were randomized to receive 8 weeks of treatment followed by 12 months of follow-up. This article outlines the study design, presents baseline data about the sample, and compares the sample to national samples and to our previous study examining vigorous-intensity exercise as an aid to smoking cessation. RESULTS: Married and white participants reported significantly higher levels of nicotine dependence than unmarried and minority participants. Higher levels of nicotine dependence were also significantly related to lower smoking cessation self-efficacy and higher levels of self-reported depression, anxiety, and perceived stress. Additionally, participants smoked significantly more cigarettes (mean 20.6) than a national sample of female smokers (mean 16.1). On average, participants were significantly older, weighed significantly more, and scored significantly higher on a measure of anxiety than participants in our previous trial. CONCLUSIONS: Our sample consisted of women who were heavier smokers than national samples seeking treatment. It remains to be determined how this will impact their ability to attain cessation in the present study.

Administration, Cutaneous↗
PubMed2003

The Smoking Effects Questionnaire for adult populations. Development and psychometric properties.

Outcome expectancies are central to a social learning model of smoking and of smoking cessation. The Smoking Effects Questionnaire (SEQ) was developed for use in general adult populations. Items were administered to 257 smokers and ex-smokers including worksite employees, hospital visitors, and clients entering smoking cessation treatment. Principal components analysis (PCA) found seven components with good reliability that were reduced into scales of four or five items each with internal consistencies above alpha=.80. The final measure has 33 items. The scales were divided by secondary factor analysis into three negative effect and four positive effect scales. The SEQ showed good construct and concurrent validity in comparison with measures of similar constructs and with other smoking variables. Women expected fewer negative physical effects and attributed more importance to positive stimulating effects from smoking but otherwise were comparable to men in expected effects of smoking. More dependent smokers ascribed more importance to negative physical effects and positive stimulating effects than did less dependent smokers but did not differ significantly on other expectancy domains. Both true/false scoring and importance ratings of effects produced mostly comparable results so that either scoring method could be used. Treatment implications were discussed. This brief scale is likely to be useful in a variety of research and clinical settings.

Adult↗
PubMed2003

Naltrexone treatment for alcoholics: effect on cigarette smoking rates.

Naltrexone (NTX), by its pharmacological action in the mesolimbic pathways, should decrease reinforcement from nicotine as well as from alcohol. By means of this mechanism, NTX could result in temporary increases in smoking followed by decreased smoking rates among alcoholics not motivated to quit smoking. The change from pretreatment in smoking rates of 73 recently abstinent alcoholics in a 12-week clinical trial of NTX vs. placebo during alcoholism treatment was compared during 8 of the 12 weeks. Only smokers compliant with NTX were included in the analyses. NTX was associated with decreased smoking at every time point, but the effect was significant at only one time point. When alcohol relapsers were excluded, NTX patients showed decreased smoking at every time point, but the effect was significant at only two time points, a reduction of about five cigarettes per day. When smoking stage of change was included in the analyses, NTX showed no significant main or interaction effects on smoking rate. Precontemplators showed significantly less change in smoking rate than all other patients at the first and last four time points. Therefore, NTX alone currently does not show promise for promoting smoking reduction among recently abstinent alcoholics who have not sought or been given smoking cessation treatment. Further research is needed on possible effects with smokers motivated to quit smoking and on other methods of promoting smoking cessation among alcoholics.

Adult↗
PubMed2003

Facilitating transdisciplinary research: the experience of the transdisciplinary tobacco use research centers.

Cigarette smoking is the largest preventable cause of death and morbidity in the United States. Heightened recognition of this public health concern has led researchers from multiple and varied disciplines to address this complex and multidimensional behavior. The need for an alternative research paradigm, focusing on a transdisciplinary approach that integrates work across disciplines in order to advance the field most quickly, has been identified. This recognized need led to the development of the Transdisciplinary Tobacco Use Research Centers (TTURC) initiative, funded jointly by the National Cancer Institute, the National Institute on Drug Abuse, and The Robert Wood Johnson Foundation. This paper discusses the formation and early implementation stages of the initiative, including meetings that led to the development of the TTURCs, funders' and research centers' perspectives on implementation, and early observations about the products of the initiative.

Humans↗
PubMed2003

The evolution of cancer control research: an international perspective from Canada and the United States.

Four phases in the evolution of cancer control frameworks are reviewed, highlighting how national Canadian and United States planning and implementation activities have built on each other's work to define and guide cancer control research. Hallmarks have come to be: (a) coordination of the cycle that applies research to practice and policy decisions; (b) synthesis of knowledge at each phase of cancer control framework; (c) a focus on populations and public health with feedback loops between fundamental and applied research; and (d) interdisciplinary integration of the biological, behavioral, social, and other population sciences. Current research priorities and initiatives based on the research framework now common to both Canada and the United States are described. We conclude by calling for an international forum for the systematic advancement of cancer control research, and closer ties between the cancer control communities in North America.

Canada↗