David W Wetter

Rice University, Houston, Texas, United States

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Publications (206)720.21 Total impact

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    Miguel Ángel Cano · David W. Wetter

    Full-text · Article · Jun 2014 · Texas Heart Institute journal / from the Texas Heart Institute of St. Luke's Episcopal Hospital, Texas Children's Hospital
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    ABSTRACT: Recent research suggests that mindfulness benefits emotion regulation and smoking cessation. However, the mechanisms by which mindfulness affects emotional and behavioral functioning are unclear. One potential mechanism, lower affective volatility, has not been empirically tested during smoking cessation. This study examined longitudinal associations among mindfulness and emotional responding over the course of smoking cessation treatment among predominantly low-socioeconomic status (SES) African American smokers, who are at high risk for relapse to smoking and tobacco-related health disparities. Participants (N = 399, 51% female, mean age = 42, 48% with annual income <$10,000) completed a baseline measure of trait mindfulness. Negative affect, positive affect, and depressive symptoms were assessed at five time points during smoking cessation treatment (up to 31 days postquit). Volatility indices were calculated to quantify within-person instability of emotional symptoms over time. Over and above demographic characteristics, nicotine dependence, and abstinence status, greater baseline trait mindfulness predicted lower volatility of negative affect and depressive symptoms surrounding the quit attempt and up to 1 month postquit, ps < 0.05. Although volatility did not mediate the association between greater mindfulness and smoking cessation, these results are the first to show that mindfulness is linked to lower affective volatility (or greater stability) of negative emotions during the course of smoking cessation. The present study suggests that mindfulness is linked to greater emotional stability and augments the study of mindfulness in diverse populations. Future studies should examine the effects of mindfulness-based interventions on volatility and whether lower volatility explains effects of mindfulness-based treatments on smoking cessation. (PsycINFO Database Record (c) 2014 APA, all rights reserved).
    No preview · Article · Jun 2014 · Psychology of Addictive Behaviors
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    ABSTRACT: It is not surprising that smoking abstinence rates are low given that smoking cessation is associated with increases in negative affect and stress that can persist for months. Mindfulness is one factor that has been broadly linked with enhanced emotional regulation. This study examined baseline associations of self-reported trait mindfulness with psychological stress, negative affect, positive affect, and depression among 158 smokers enrolled in a smoking cessation treatment trial. Several coping dimensions were evaluated as potential mediators of these associations. Results indicated that mindfulness was negatively associated with psychological stress, negative affect, and depression and positively associated with positive affect. Furthermore, the use of relaxation as a coping strategy independently mediated the association of mindfulness with psychological stress, positive affect, and depression. The robust and consistent pattern that emerged suggests that greater mindfulness may facilitate cessation and attenuate vulnerability to relapse among smokers preparing for cessation. Furthermore, relaxation appears to be a key mechanism underlying these associations. The ClinicalTrials.gov identifier is NCT00297479.
    No preview · Article · Jun 2014 · Mindfulness
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    ABSTRACT: Ecological momentary assessment was used to examine associations between negative affect, positive smoking outcome expectancies, and smoking urge during the first 7 days of a smoking quit attempt. Participants were 302 female smokers who enrolled in an individually tailored smoking cessation treatment study. Multilevel mediation analysis was used to examine the temporal relationship among the following: (a) the effects of negative affect and positive smoking outcome expectancies at 1 assessment point (e.g., time j) on smoking urge at the subsequent time point (e.g., time j + 1) in Model 1; and, (b) the effects of negative affect and smoking urge at time j on positive smoking outcome expectancies at time j + 1 in Model 2. The results from Model 1 showed a statistically significant effect of negative affect at time j on smoking urge at time j + 1, and this effect was mediated by positive smoking outcome expectancies at time j, both within- and between-participants. In Model 2, the within-participant indirect effect of negative affect at time j on positive smoking outcome expectancies at time j + 1 through smoking urge at time j was nonsignificant. However, a statistically significant indirect between-participants effect was found in Model 2. The findings support the hypothesis that urge and positive smoking outcome expectancies increase as a function of negative affect, and suggest a stronger effect of expectancies on urge as opposed to the effect of urge on expectancies. (PsycINFO Database Record (c) 2014 APA, all rights reserved).
    Full-text · Article · May 2014 · Experimental and Clinical Psychopharmacology

  • No preview · Article · May 2014 · Ethnicity & disease
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    ABSTRACT: To explore associations between financial strain and self-rated health among 1341 black adults. Associations were investigated using a covariate-adjusted linear regression model. Mediation (via stress and/or depressive symptoms) was explored in additional models using a nonparametric bootstrapping procedure. Higher financial strain was associated with poorer self-rated health (p < .001). Stress and depressive symptoms were each significant mediators of this relation in both single and multiple mediator models (p values < .05). Financial strain may contribute to poorer health among black adults, partially via greater stress and depressive symptoms. Potential theoretical, intervention, and policy implications are discussed. Future studies with longitudinal designs are needed to confirm these results.
    No preview · Article · May 2014 · American journal of health behavior
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    ABSTRACT: Negative affect, alcohol consumption, and presence of others smoking have consistently been implicated as risk factors in smoking lapse and relapse. What is not known, however, is how these factors work together to affect smoking outcomes. This paper uses ecological momentary assessment (EMA) collected during the first 7 days of a smoking cessation attempt to test the individual and combined effects of high-risk triggers on smoking urge and lapse. Participants were 300 female smokers who enrolled in a study that tested an individually tailored smoking cessation treatment. Participants completed EMA, which recorded negative affect, alcohol consumption, presence of others smoking, smoking urge, and smoking lapse, for 7 days starting on their quit date. Alcohol consumption, presence of others smoking, and negative affect were, independently and in combination, associated with increase in smoking urge and lapse. The results also found that the relationship between presence of others smoking and lapse and the relationship between negative affect and lapse were moderated by smoking urge. The current study found significant individual effect of alcohol consumption, presence of other smoking, and negative affect on smoking urge and lapse. Combing the triggers increased smoking urge and the risk of lapse to varying degrees and the presence of all 3 triggers resulted in the highest urge and lapse risk.
    Full-text · Article · May 2014 · Nicotine & Tobacco Research
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    ABSTRACT: Background: African Americans suffer disproportionately from the adverse consequences of behavioral risk factors for cancer relative to other ethnic groups. Recent studies have assessed how financial strain might uniquely contribute to engagement in modifiable behavioral risk factors for cancer, but not among African Americans. The current study examined associations between financial strain and modifiable cancer risk factors (smoking, at-risk alcohol use, overweight/obesity, insufficient physical activity, inadequate fruit and vegetable intake, and multiple risk factors) among 1278 African American adults (age=46.5+12.6, 77% female) and explored potential mediators (stress and depressive symptoms) of those associations. Methods: Logistic regression models were used to examine associations between financial strain and cancer risk factors. Analyses were adjusted for age, sex, partner status, income, educational level, and employment status. Analyses involving overweight/obesity status additionally controlled for fruit and vegetable intake and physical activity. Nonparametric bootstrapping procedures were used to assess mediation. Results: Greater financial strain was associated with greater odds of insufficient physical activity (p<.003) and smoking (p=.005) and was positively associated with the total number of cancer risk factors (p<.0001). There was a significant indirect effect of both stress and depressive symptoms on the relations of financial strain with physical inactivity and multiple risk factors, respectively. Conclusions: Future interventions aimed at reducing cancer disparities should focus on African Americans experiencing higher financial strain while addressing their stress and depressive symptoms. Impact: Longitudinal studies are needed to assess the temporal and causal relations between financial strain and modifiable behavioral cancer risk factors among African Americans.
    Preview · Article · Apr 2014 · Cancer Epidemiology Biomarkers & Prevention
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    ABSTRACT: Background Prominent theories of drug use underscore the importance of considering the inter-relationships (e.g., reciprocal relations, indirect effects) of determinants of drug use behavior. In the area of smoking, few studies have examined multiple determinants of cessation in this way, and in prospective analyses. The current study is an examination of the prospective cross-lagged relationships among five intrapersonal determinants of cessation Methods Data from a longitudinal cohort study on racial differences in the process of smoking cessation were used to examine reciprocal relations among abstinence motivation, abstinence self-efficacy, positive affect, negative affect, and craving. Each of these five measures assessed on the quit day were regressed onto the same measures assessed 1-2 weeks pre-quit. The relationships of these variables at quit day with 1-week post-quit abstinence from smoking were also examined. Results When the five variables were examined simultaneously in a cross-lagged path analysis, motivation and self-efficacy, and self-efficacy and positive affect showed cross-lagged relations. Only self-efficacy on the quit day uniquely predicted 1-week post quit abstinence. There were significant indirect effects of motivation and positive affect on cessation via self-efficacy. Conclusions The current study reaffirms the importance of motivation and self-efficacy in smoking cessation, and suggests that positive affect may play a role in smoking cessation.
    Full-text · Article · Apr 2014 · Drug and alcohol dependence

  • No preview · Article · Mar 2014 · Cancer Epidemiology Biomarkers & Prevention
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    ABSTRACT: Although over 70% of homeless individuals smoke, few studies have examined the effectiveness of smoking cessation interventions in this vulnerable population. The purpose of this pilot study was to compare the effectiveness of shelter-based smoking cessation clinic usual care (UC) to an adjunctive contingency management (CM) treatment that offered UC plus small financial incentives for smoking abstinence. Sixty-eight homeless individuals in Dallas, Texas (recruited in 2012) were assigned to UC (n = 58) or UC plus financial incentives (CM; n = 10) groups and were followed for 5 consecutive weeks (1 week pre-quit through 4 weeks post-quit). A generalized linear mixed model regression analysis was conducted to compare biochemically-verified abstinence rates between groups. An additional model examined the interaction between time and treatment group. The participants were primarily male (61.8%) and African American (58.8%), and were 49 years of age on average. There was a significant effect of treatment group on abstinence overall, and effects varied over time. Follow-up logistic regression analyses indicated that CM participants were significantly more likely than UC participants to be abstinent on the quit date (50% vs. 19% abstinent) and at 4 weeks post-quit (30% vs. 1.7% abstinent). Offering small financial incentives for smoking abstinence may be an effective way to facilitate smoking cessation in homeless individuals.
    No preview · Article · Mar 2014 · Addictive behaviors
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    ABSTRACT: Social learning models of addiction hypothesize that situational factors interact with cognitive determinants to influence a person's motivation to use substances. Ecological momentary assessment was used to examine the association between alcohol consumption, smoking outcome expectancies, and smoking urge during the first 7 days of a smoking quit attempt. Participants were 113 female smokers who enrolled in a study that tested an individually tailored smoking cessation treatment. Participants carried a palm-top personal computer for 7 days and were instructed to complete 4 random assessments each day and to initiate an assessment when they were tempted to smoke. Multilevel mediational analyses were used to examine (a) the effects of alcohol consumption before time j and positive smoking outcome expectancies at time j on smoking urge at time j + 1 (Model 1) and (b) the effects of alcohol consumption before time j and smoking urge at time j on positive smoking outcome expectancies at time j + 1 (Model 2). Model 1 found a significant effect of alcohol consumption before time j on smoking urge at time j + 1 (p = .04), and this effect was significantly mediated by positive smoking outcome expectancies at time j (p < .0001). Model 2 failed to find a significant effect of alcohol consumption before time j on positive smoking outcome expectancies at time j + 1. The findings suggest that alcohol consumption is significantly associated with increased positive smoking outcome expectancies that, in turn, are associated with increased smoking urge in women seeking to quit smoking. (PsycINFO Database Record (c) 2014 APA, all rights reserved).
    Full-text · Article · Mar 2014 · Psychology of Addictive Behaviors
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    ABSTRACT: Nearly half of U.S. adults have health literacy (HL) difficulties, and lack the ability to effectively obtain, process, and understand health information. Poor HL is associated with depression, yet mechanisms of this relation are unclear. This study examined whether social support mediated the relation between HL and depressive symptoms in 200 low-socioeconomic status (SES), racially/ethnically diverse smokers enrolled in cessation treatment. Mediation analyses were conducted using bootstrapping and controlling for SES and nicotine dependence. In simple mediation models, social support [Interpersonal Support Evaluation List (ISEL) total, subscales (Appraisal, Belonging, Tangible)] mediated the effect of HL on depression, such that lower HL was associated with lower perceived support, which predicted higher depressive symptoms (ps < .05). A multiple mediation model, with ISEL subscales entered simultaneously as mediators, was significant (p < .05) but only the Belonging subscale demonstrating independent significance (p < .05). Thus, social support may be a critical factor underlying the HL-depression relationship in low-SES, racially/ethnically diverse smokers.
    No preview · Article · Mar 2014 · Journal of Behavioral Medicine
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    ABSTRACT: Background Although studies have shown a cross-sectional link between discrimination and smoking, the prospective influence of discrimination on smoking cessation has yet to be evaluated. Thus, the purpose of the current study was to determine the influence of everyday and major discrimination on smoking cessation among Latinos making a quit attempt. Methods Participants were 190 Spanish speaking smokers of Mexican Heritage recruited from the Houston, TX metropolitan area who participated in the study between 2009 and 2012. Logistic regression analyses were conducted to evaluate the associations of everyday and major discrimination with smoking abstinence at 26 weeks post-quit. Results Most participants reported at least some everyday discrimination (64.4%), and at least one major discrimination event (56%) in their lifetimes. Race/ethnicity/nationality was the most commonly perceived reason for both everyday and major discrimination. Everyday discrimination was not associated with post-quit smoking status. However, experiencing a greater number of major discrimination events was associated with a reduced likelihood of achieving 7-day point prevalence smoking abstinence, OR = .51, p = .004, and continuous smoking abstinence, OR = .29, p = .018, at 26 weeks post-quit. Conclusions Findings highlight the high frequency of exposure to discrimination among Latinos, and demonstrate the negative impact of major discrimination events on a smoking cessation attempt. Efforts are needed to attenuate the detrimental effects of major discrimination events on smoking cessation outcomes.
    No preview · Article · Mar 2014 · Drug and alcohol dependence
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    ABSTRACT: To explore the associations between shelter proximity and real-time affect during a specific smoking quit attempt among 22 homeless adults. Affect was measured via 485 smartphone-based Ecological Momentary Assessments randomly administered during the weeks immediately before and after the quit day, and proximity to the shelter was measured via GPS. Adjusted linear mixed model regressions examined associations between shelter proximity and affect. Closer proximity to the shelter was associated with greater negative affect only during the post-quit attempt week (p = .008). All participants relapsed to smoking by one week post-quit attempt. Among homeless smokers trying to quit, the shelter may be associated with unexpected negative affect/stress. Potential intervention applications are suggested.
    No preview · Article · Mar 2014 · American journal of health behavior
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    ABSTRACT: Biobanking is the collection of human biospecimens (tissues, blood, and body fluids) and their associated clinical and outcome data. Hispanics are less likely to provide biologic specimens for biobanking. The purpose of this study was to investigate the association of acculturation, nativity status, and years living in the United States with participation in biobanking among individuals of Mexican descent. Participants were 19,212 adults of Mexican descent enrolled in an ongoing population-based cohort in Houston, TX. Participants were offered the opportunity to provide a blood, urine, or saliva sample for biobanking. Acculturation was assessed with the bidimensional acculturation scale for Hispanics and scores were categorized into "low acculturation," "bicultural," and "high-acculturation." After multivariable adjustment, we found an increased likelihood of participation in biobanking among individuals classified as "bicultural" as compared with "highly acculturated" individuals [OR, 1.58; 95% confidence intervals (CI), 1.10-2.26]. The associations of nativity status and years living in the United States with biobanking were not statistically significant. After stratifying by gender, the associations of acculturation, nativity status, and years living in the United States with biobanking were not statistically significant. Although individuals of Mexican descent who were "bicultural" were more likely to participate in biobanking than individuals who were "highly acculturated," the difference in rates of participation among acculturation categories was small. The high participation rate in biospecimen collection is likely due to extensive community-engaged research efforts. Future studies are warranted to understand individuals' participation in biobanking. Community-engaged research efforts may increase Hispanics' participation in biobanking. Cancer Epidemiol Biomarkers Prev; 23(3); 402-8. ©2014 AACR.
    Preview · Article · Mar 2014 · Cancer Epidemiology Biomarkers & Prevention
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    ABSTRACT: The prevalence of diabetes is alarmingly high among Mexican American adults residing near the U.S.-Mexico border. Depression is also common among Mexican Americans with diabetes, and may have a negative influence on diabetes management. Thus, the purpose of the current study was to evaluate the associations of depression and anxiety with the behavioral management of diabetes and glycemic control among Mexican American adults living near the border. The characteristics of Mexican Americans with diabetes living in Brownsville, TX (N = 492) were compared by depression/anxiety status. Linear regression models were conducted to evaluate the associations of depression and anxiety with BMI, waist circumference, physical activity, fasting glucose, and glycated hemoglobin (HbA1c). Participants with clinically significant depression and/or anxiety were of greater age, predominantly female, less educated, more likely to have been diagnosed with diabetes, and more likely to be taking diabetes medications than those without depression or anxiety. In addition, anxious participants were more likely than those without anxiety to have been born in Mexico and to prefer study assessments in Spanish rather than English. Greater depression and anxiety were associated with poorer behavioral management of diabetes (i.e., greater BMI and waist circumference; engaging in less physical activity) and poorer glycemic control (i.e., higher fasting glucose, HbA1c). Overall, depression and anxiety appear to be linked with poorer behavioral management of diabetes and glycemic control. Findings highlight the need for comprehensive interventions along the border which target depression and anxiety in conjunction with diabetes management.
    Full-text · Article · Feb 2014 · BMC Public Health
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    ABSTRACT: • To create a sustainable, community-based partnership (the Outreach Pilot Program [OPP]) to promote tobacco control and decrease tobacco use in Puerto Rico through community-based participatory research. • The public health burden of smoking in Puerto Rico is substantial as the fifth leading causes of death in Puerto Rico are associated with smoking (heart disease, malignant neoplasm, stroke, hypertension, and chronic pulmonary disease). • Despite the clear need for tobacco control interventions, the availability of treatment in Puerto Rico is low. • The OPP carried out activities which fell under the following broad categories: 1) Network development, 2) research activities, 3) training and education, and 4) community awareness. Eighty organizations participated in the OPP. • The OPP contributed to the creation of one of the most rigorous smoke-free laws in the United States. • OPP activities increased the number of callers to the Puerto Rico Quitline and created a shift in the source of callers away from costly mass media promotion toward a higher proportion of callers referred through health care providers and via low-cost print materials promoted by the network outreach activities. Physicians’ referrals to the Puerto Rico Quitline increased from 2.6% to 7.2% and brochure referrals from 1.4% to 4.6%. The number of annual smokers receiving cessation services increased from 703 in 2005 to 1,086 in 2008. • Utilizing a community-based participatory approach, outreach programs can empower community organizations to take action via networking, education, research, and the provision of tangible solutions for service provision. These efforts can bring organizations together under a common goal, influence public policy, provide critical training in tobacco control, and increase the utilization of treatment programs in a manner that is culturally sensitive and relevant for the local community. • Health professionals. • Policymakers. • Community-based organizations and community health centers. • Educators responsible for training health professionals. • The description of the development and implementation of the OPP provides an example of how community networking is feasible, sustainable, and can contribute to tobacco control. • Challenges will occur and therefore should be expected and addressed. Challenges identified by OPP network members include: Tobacco control was not always perceived as a priority by their managers, time constraints and limited funding to implement outreach activities, and perceived lack of professional competence in tobacco-related topics. • Network participants suggested the following: Continue providing information regarding tobacco-related research and other accomplishments by collaborators, integrate tobacco awareness within other chronic diseases campaigns throughout the year, and continue trainings on evidence-based practices for tobacco control. • Network members noted that an outreach program’s sustainability relies on building of capacity of its members, and this should be a key component of network activities. • Community networks such as the OPP should continue to be analyzed in terms of their governance, accountability, operations, risks, and benefits.
    No preview · Article · Jan 2014 · Progress in Community Health Partnerships Research Education and Action

  • No preview · Article · Jan 2014 · American journal of health behavior
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    ABSTRACT: To examine whether stress or depressive symptoms mediated associations between perceived discrimination and multiple modifiable behavioral risk factors for cancer among 1363 African American adults. Nonparametric bootstrapping procedures, adjusted for sociodemographics, were used to assess mediation. Stress and depressive symptoms each mediated associations between discrimination and current smoking, and discrimination and the total number of behavioral risk factors for cancer. Depressive symptoms also mediated the association between discrimination and overweight/obesity (p values < .05). Discrimination may influence certain behavioral risk factors for cancer through heightened levels of stress and depressive symptoms. Interventions to reduce cancer risk may need to address experiences of discrimination, as well as the stress and depression they engender.
    No preview · Article · Jan 2014 · American journal of health behavior

Publication Stats

5k Citations
720.21 Total Impact Points

Institutions

  • 2014-2015
    • Rice University
      • Department of Psychology
      Houston, Texas, United States
  • 1996-2015
    • University of Texas MD Anderson Cancer Center
      • • Health Disparities Research
      • • Department of Behavioral Science
      Houston, Texas, United States
  • 2006
    • Harvard University
      Cambridge, Massachusetts, United States
  • 2005-2006
    • University of Houston
      • Department of Educational Psychology
      Houston, Texas, United States
  • 1998-2006
    • Duke University
      Durham, North Carolina, United States
  • 1992-2004
    • University of Wisconsin–Madison
      • • Department of Psychology
      • • Center for Tobacco Research and Intervention
      Madison, Wisconsin, United States
  • 2002
    • Xavier University
      • Department of Psychology
      Cincinnati, OH, United States
    • Baylor College of Medicine
      • Department of Pediatrics
      Houston, Texas, United States
  • 2000
    • Group Health Cooperative
      Seattle, Washington, United States
  • 1999
    • University of Washington Seattle
      Seattle, Washington, United States