47 Clinical Trials for Various Conditions
The proposed study is a randomized controlled trial that compares the effectiveness of an electronic personalized health screening app incorporating motivational feedback (i.e. "Check Yourself") to usual care among moderate to high risk alcohol users. The purpose of this study is to determine whether Check Yourself is more effective than usual care in reducing alcohol consumption and binge drinking and improving quality of care among adolescents receiving school-based health clinic services.
This project extends the investigators' previous research regarding the intersecting risks of alcohol, sexual risk behavior (SRB), and sexual aggression (SA) in male drinkers who have sex with women by examining the mediating and moderating roles of both intrapersonal and interpersonal emotional factors. While independent streams of research consistently document alcohol's role in SRB and SA, the investigators' work has demonstrated that these behaviors are related, and that alcohol exacerbates their likelihood both independently and synergistically. The researchers' investigations focus on a particular type of SRB: men's resistance to condom use with female partners who want to have protected sex. Condom use resistance (CUR) is common and normative among young male drinkers, with up to 80% of men reporting engaging in CUR. Of particular concern, research demonstrates that up to 42% of men report using coercive CUR tactics such as emotional manipulation, deception, condom sabotage, and force to obtain unprotected sex. Investigators will evaluate hypotheses that distal and proximal emotional and alcohol factors influence in-the-moment SRB/CUR intentions as well as daily alcohol use and SRB/CUR. The investigators will also examine whether the relationships among assessed variables are similar across experimental and naturalistic settings. That is, investigate the extent to which men's responses in the lab parallel their real-world drinking and SRB/CUR behaviors, particularly regarding self and partner emotions, empathy, and interpersonal stress.
The current study proposes to develop, refine, and conduct a preliminary randomized controlled trial (RCT) of an innovative prevention program that is the first to (a) simultaneously target heavy episodic drinking (HED), sexually aggressive behavior (SAB), and risky sexual behavior (RSB) among college men; (b) integrate personalized feedback and cognitive training strategies; and (c) target the five major modifiable risk factors for SAB: HED, impersonal sex, misperceptions of sexual interest, rape-supportive attitudes, and peer influence. The program will be computer-delivered as this approach is well received by college students.
Although correct, consistent condom use can greatly reduce sexually transmitted infections and unplanned pregnancies, resistance of condom use is common among young adults. Young men's alcohol intoxication and sexual aggression history are predictive of greater condom use resistance and other sexual risk behaviors (e.g., unprotected sex). Moreover, emotional factors may play a role in these associations, suggesting a promising avenue for continued research. This project builds upon our prior research through investigation of the emotional mechanisms involved in young men's alcohol-related sexual risk behavior. This research addresses a critical knowledge gap and advances the field through the use of multiple methods designed to evaluate distal and proximal emotional factors implicated in alcohol-related sexual risk. Male drinkers aged 21-30 who use condoms inconsistently (N = 420) will first complete a screening procedure followed by a baseline survey that will assess relevant constructs, including emotional traits, emotion dysregulation tendencies, and alcohol expectancies. They will then complete a 30-day daily diary assessment of their daily emotional states, daily coping motives pertaining to drinking and sex, and daily drinking and sexual risk behaviors to evaluate daily relationships among these factors. The same participants will complete an in-lab experiment assessing in-the-moment effects of alcohol intoxication and provocation on emotional states and sexual risk intentions. Statistical analyses will be used to examine the daily influence of emotional states and coping motives on alcohol consumption and sexual risk behaviors and the experimental effects of alcohol intoxication and provocation on emotional states and other mediators, as well as sexual risk intentions. Moderating effects of emotion dysregulation tendencies will also be examined, and the linkages between event-level and experimental relationships will be investigated. This research is both significant and innovative in that it will address the public health concern of men's sexual risk behaviors, including condom use resistance; will evaluate the role of emotional processes in men's alcohol-related sexual risk; and will use multiple methods to gather complementary types of data that will elucidate the mechanisms underlying alcohol-related sexual risk behaviors and provide an empirical evidence base from which to develop and inform prevention and intervention programs.
The purpose of this study is to conduct a pilot study of Motivational Enhancement Therapy (MET), an empirically validated behavioral change strategy, with young adults who are HIV +. The aim is to determine if MET is effective in increasing general health promotion behaviors, adherence to HIV+ specific medical treatment over and above taking medication, and decreasing risky behaviors in young adults who are HIV positive. The longer-term objective is to identify and way to decrease HIV transmission rates, disease progression, illness episodes, and hospitalizations in this high-risk population. Hypotheses: 1)Youth receiving the motivational intervention plus referrals will report greater reductions in risky behaviors than youth in the control group receiving standard care plus referrals at 3-months post-baseline. This hypothesis will first be tested in the whole sample using an overall risk index. Then, the hypothesis will be tested with each behavior (reduced drug and alcohol use, condom use, taking medications,) within the subgroups reporting problem levels of that behavior; 2)Youth in the intervention group will demonstrate improved viral loads, will report greater improvement in perceived health status, depression, general psychological distress, disclosure to sexual partners, and will demonstrate greater attendance of medical and support service appointments than youth in the control group at 3 months post-baseline; 3)Youth in the intervention group will report greater reductions in temptation to engage in risky behaviors, increased self-efficacy, and improvements in readiness to change their behavior than youth in the control group at 3 months post-baseline; 4)The differences between the intervention and control group from pre- to post- intervention will be maintained at 6, 9, 12, and 15 months post-baseline (3, 6, 9, and 12 months after intervention completion).
The current study is the first empirical investigation that directly addresses the correspondence between responses regarding indicators of risky sexual behavior while under the influence of alcohol in the laboratory and the occurrence of sexually risky behavior while under the influence of alcohol in the natural environment, by use of Ecological Sampling Methodology (ESM). The study will allow us to compare and contrast implicit and explicit assessments of sexual risk in respect to future behavior in the natural environment. The data obtained will thus provide new information regarding the external validity of alcohol administration studies of sexual risk behavior and will provide information to optimize the selection of dependent measures. The current study also represents the first attempt to test a causal model linking alcohol intoxication and risky sexual behavior as a function of both automatic, reflexive, approach tendencies and effortful, deliberative, self-control (operationalized by executive working memory in this application). The ESM study will augment the findings of the experiment by providing a detailed assessment of contextual factors that affect sexual risk behavior as well as replicating and extending the findings of the experiment to sexual risk situations in the natural environment. Finally, to our knowledge there has been only one experimental study of alcohol and sexual risk in MSM (Maisto, Palfai, Vanable, Heath, \& Woolf-King, 2012), which is remarkable given that MSM have been identified as the population at highest risk to contract the HIV in the U.S. since the virus was identified in the early 1980s. Thus the proposed research is only the second attempt to add to an understanding of the connections among alcohol, cognitive processes, and sexual risk behaviors in MSM.
This randomized control trial study among Pre-exposure prophylactic users (PrEP) aims to learn and determine the efficacy of Screening, brief intervention, and referral to treatment (SBRIT) in reducing the risk of alcohol use. The main questions it aims to answer are: 1. How alcohol use impacts the PrEP continuum and to understand how early intervention and treatment approach affects alcohol use and PrEP adherence. 2. Investigate the effectiveness of the SBIRT intervention in preventing hazardous alcohol use and its impact on gut dysbiosis in PrEP users. 3. To determine alterations in the gut microbiome (dysbiosis), intestinal homeostasis, systemic inflammation, and markers of liver disease associated with hazardous alcohol use among PrEP users.
Ecological momentary interventions (EMI), which use phones to deliver messages to reduce alcohol use and related risk behaviors during or prior to drinking events, can help to address triggers in real-time. GPS tracking can determine when individuals visit places they have previously reported drinking or triggers to drink and then EMI messages can be delivered upon arrival to prevent risky alcohol use. A mobile app has been developed that uses GPS tracking to determine when individuals visit "risky" places and then delivers a survey asking what behaviors they engaged in while at the location. The goal of the proposed study is to use this app to enhance the Tracking and Reducing Alcohol Consumption (TRAC) intervention by delivering messages that encourage participants to employ strategies discussed during TRAC sessions when arriving at risky places. When they leave these places, they will complete a survey and breathalyzer reading in order to collect event-level self-report and biological data on alcohol use and HIV risk. If their breathalyzer result indicates alcohol use, they will receive harm reduction messaging. It is expected that combining TRAC with EMI ("TRAC-ER") will increase effectiveness by reinforcing topics discussed during these sessions, providing in-the-moment messaging to address triggers, and collecting real-time alcohol use data.
Randomized controlled pilot trial to test the feasibility and efficacy of a brief intervention with app-based messaging to reduce sexual risk behavior and heavy drinking among Black/African American and Hispanic/Latino MSM.
Background: People who binge drink are more likely to have risky sexual encounters, and alcohol changes brain activity associated with reward decisions related to those behaviors. Researchers want to better understand how alcohol s effects on risky sexual behavior that might lead people to contract sexually transmitted diseases (STDs) like HIV, the virus that causes AIDS. Objective: To study how alcohol impacts decisions about engaging in risky sex. Eligibility: Healthy adults ages 21-65 without alcohol use disorder Design: Participants will have 2 study visits, 1 month apart. They will arrive and depart via taxi. They will consume alcohol at 1 visit, chosen at random. At visit 1, participants will answer questions about HIV knowledge, HIV risk behaviors, and sexual interests. They will view pictures of clothed people and pick those they might have sex with. They will think about the person s risk of having an STD and whether they would use a condom during sex. At both visits, participants will sit in a bar-like room and have 2 drinks that may contain alcohol. Then they will have magnetic resonance imaging (MRI) brain scans. For this, they will lie on a table that slides in and out of a metal tube. The scanner makes loud noises; they will get earplugs. They will complete tasks that include looking at pictures and making choices about money. At the beginning of both visits the participants will be screened with urine drug test and pregnancy test. Duiring each visit the participants breath alcohol will be measured, and they will discuss whether they feel intoxicated. Participants will get snacks and stay at the clinic for up to 6 hours after the MRIs.
Open pilot trial to test the feasibility and efficacy of a brief intervention with text messaging to reduce sexual risk behavior and heavy drinking among MSM
The proposed project will provide data concerning dating and sexual interactions that occur on Fort Bragg, North Carolina, in addition to piloting a sexual assault prevention program through the use of social norms and bystander intervention concepts. The investigators will be able to use data and feedback gained from this research to help reduce rates of sexual assault in the military by providing a sexual assault prevention program tailored to at risk male Soldiers that can be disseminated across military posts.
The primary aims of this study are to test the hypotheses that among alcohol abusing and dependent jailed women returning to the community, adding an Alcoholic Anonymous (AA) linkage intervention will result in less alcohol use at follow-up, increased AA attendance once released, and decreased HIV/STI sexual risk behavior. Additionally, this study seeks to test the hypotheses that increased AA attendance will mediate the effect of the AA linkage intervention on alcohol use and that percent days abstinent will mediate the effect of the intervention on HIV/STI sexual risk-taking outcomes.
The purpose of this study was to determine whether a brief counseling intervention coupled with rapid HIV testing was feasible and effective at decreasing alcohol consumption and sexual risk behaviors among young, unhealthy drinkers presenting to the Emergency Department.
African American (AA) women are disproportionately affected by HIV/AIDs. The major risk factor for HIV acquisition among AA women is high-risk heterosexual sex, including unprotected vaginal and anal sex, and sex with a high-risk partner. Hazardous alcohol use has been associated with high risk sexual behaviors and prevalent gonorrhea among women attending an urban STI clinic, both of which increase a woman's vulnerability to HIV acquisition and transmission. This application proposes a randomized controlled trial (RCT) of a culturally tailored computer-directed brief alcohol intervention (CBI) enhanced with cell-phone booster calls using interactive voice response technology (IVR) and text messages among HIV-infected and at-risk AA women attending an urban STI Clinic. Hazardous drinking AA women (N=450) presenting with STI complaints will be randomized to one of three arms: 1) usual clinical care, 2) clinic-based, CBI, or 3) clinic-based, CBI + 3 booster calls using IVR and text messages. The CBI, an evidence-based based method for behavior change, will use principles of motivational interviewing, to counsel on: 1) alcohol use and 2) associated HIV/STI risk behaviors. Primary outcomes, measured at 3, 6, and 12 month intervals, include alcohol-related risk behaviors (number of binge drinking episodes, drinking days/week, and drinks per occasion), sexual risk behaviors (number of partners, episodes of unprotected vaginal/anal sex, episodes of sex while high), and occurrence of HIV/STI biomarkers. Prior to implementing the RCT, the CBI and IVR software messages will be revised to: 1) include the association between hazardous alcohol use and risky sexual behaviors, and 2) ensure their relevance and acceptability using quantitative/qualitative feedback from a sample of AA women attending a Baltimore City STI clinic. The proposed research focuses on a particularly vulnerable population of urban HIV at-risk and HIV-infected AA women seeking treatment in a public STI clinic and examines two novel BI intervention delivery strategies specifically tailored to be culturally/socially relevant to this minority population. If the intervention(s) prove to be effective, study findings will offer "real life" specialty care clinics a screening and intervention package that is practical, low cost, and easy to implement.
The Emergency Department (ED) setting is a unique point of access for reaching underage drinkers (age 14-20). With the aid of computer technology, this study will screen underage drinkers in the ED and fully test promising ED-based brief intervention and 3-month follow-up brief treatment approaches for alcohol misuse. Developing methods to efficiently and effectively optimize these approaches has powerful public health implications for improving outcomes for underage drinkers.
Adolescents are at great risk for sexually transmitted diseases (STDs) including the human immunodeficiency virus (HIV) (CDC, 2000a; DiLorenzo \& Whaley, 1999). Though the CDC (2000b) reports that overall AIDS incidence is on the decline, there has been no comparable decline in the number of newly diagnosed HIV cases among young people aged 13-19, and young people of color are particularly at risk. Compared to the general adolescent population, adolescents involved with the criminal justice system are younger at first intercourse, have a greater number of sex partners, and lower rates of condom use, resulting in higher rates of unintended pregnancy and STDs (e.g., St. Lawrence et al., 1999). Alcohol use is commonly cited as a reason for lack of condom use among high-risk adolescents such as those involved in the criminal justice system (e.g., Morris et al., 1998) and recent data from our research suggests that it is heavy alcohol use in concert with sexual activity that is most strongly related to lack of condom use (Bryan, Rocheleau, \& Robbins, 2002a). The goal of this research is to design, implement, evaluation, and disseminate a successful HIV/STD risk reduction intervention that is theory-based, empirically targeted to adolescents, and articulated to a criminal justice setting. The study compares a sexual risk reduction intervention with a group motivational interviewing alcohol component to a standard sexual risk reduction intervention and a no treatment control condition. The investigators hope to show that: 1) A three-hour one-time intervention has the capacity to reduce sexual risk behavior up to one year post-release among high risk adolescents in detention, 2) A combined sexual and alcohol risk reduction intervention will result in larger decreases in sexual risk behavior than a sexual risk reduction alone, 3) The interventions will exert their effects through changes in mediators derived from a theoretically-based model of condom use intentions and behaviors, and 4) A sexual risk reduction intervention including an alcohol component will be especially effective for those adolescents with higher levels of existing alcohol problems. Finally, given proven efficacy, the intervention curricula and materials will be disseminated for use in adolescent detention facilities throughout the state.
This study will determine the effectiveness of a health education intervention in reducing health risk behavior and improving health in adolescents with depression.
The goal of this project is to adapt a computerized Screening and Brief Advice (SBA) protocol that has demonstrated efficacy in reducing underage drinking among adolescent primary care patients and then to test it in a multi-site randomized controlled trial (RCT).
This application is a competing continuation of a grant in which we developed and pilot tested a computerized Therapeutic Workplace designed to train and employ adults as data entry operators. A randomized trial is planned over 5 years to investigate the Therapeutic Workplace business as a maintenance intervention to sustain long-term abstinence and employment. Welfare recipients in methadone treatment, actively using cocaine, and at risk for contracting or spreading HIV infection will participate in an initial Therapeutic Workplace training phase. Participants who become abstinent and skilled will be randomly assigned to an Abstinence \& Employment, or an Employment Only group. Participants in the Abstinence \& Employment group will be employed for one year in a Therapeutic Workplace business and will have to provide drug-free urine samples to work and earn salary. Employment Only participants will be offered employment for one year, but these participants will not have to provide drug-free urine samples to work. This study will provide a rigorous evaluation of the efficacy of the Therapeutic Workplace business as a long-term treatment of cocaine addiction and unemployment; determine the benefits of requiring daily evidence of abstinence to work; and provide information on the extent to which a Therapeutic Workplace business can become self-sustaining. This research could provide firm scientific foundation for the dissemination of Therapeutic Workplace businesses in the long-term treatment of cocaine addiction and unemployment. The main hypothesis being tested is that cocaine abstinence will be reliably maintained during the yearlong intervention evaluation period only in the group exposed to the explicit abstinence maintenance intervention. We expect that cocaine abstinence in the Abstinence and Employment group will be significantly greater than cocaine abstinence in the Employment Only group.
The goal of this clinical trial is to establish whether brief interventions for alcohol use can be delivered in schools for both indicated prevention and selected prevention, determine if an expanded workforce is an effective model for screening, brief intervention, and referral to treatment (SBIRT) delivery in schools, and explore whether brief intervention effectiveness is comparable in minoritized versus non-minoritized adolescents. Participants will be students at high schools across Massachusetts. High schools will be randomized to one of four intervention groups. Participants will complete a baseline survey prior to their school-wide screening for SBIRT, and then will complete four follow-up surveys over two years.
The opioid epidemic has become one of America's deadliest crises, surpassing car crashes, firearms, and HIV/AIDS as a leading cause of death for Americans under fifty years of age. People trying to recover from opioid-use disorder face many obstacles. Obstacles such as minor legal problems (e.g., arrest warrants for failure to pay a fine, failure to appear in court, or late child support payments) can undermine the stability needed to overcome opioid dependence. Outstanding legal obligations make it difficult to find jobs and to secure housing. They can result in removal from treatment programs as well as incarceration. Resolving these legal problems requires coordination, organization, preparation, travel, and time-expectations that may be problematic for many people in the early stages of recovery. Technology has the potential to make resolving these legal problems much easier. Online platform technology is now available that can guide people in recovery through the resolution of many legal problems at no cost and without an attorney, potentially doing so quickly, remotely, and at any time of day. This study of individuals in treatment in Michigan tests whether resolving outstanding legal issues improves drug treatment outcomes. The research also examines whether and to what extent resolving legal issues supports family reunification, reduces future criminal behavior, and improves access to jobs and housing for clients in treatment for opioid use disorder. A randomized controlled trial (RCT) is used to determine the effects of resolving legal issues on these outcomes. For identification, the investigators leverage the random assignment of legal services to treatment center clients, along with the random assignment of clients to treatment centers by birth month. We assemble a novel longitudinal dataset of hundreds of clients in treatment for substance use disorder and link these clients to several administrative datasets and qualitative data, which allows for measurement of: (1) substance use behaviors and (2) justice-system involvement, including civil and criminal legal system encounters. This study also uses linked client and administrative data to research the population in opioid treatment centers, follow-up behaviors, and whether the consequences of providing no-cost legal services differ by client background. Findings from this research will improve America's understanding of the acute socio-legal needs faced by those experiencing opioid use disorder and provide recommendations to help target resources toward the areas that best support long-term abstinence from opioids and other drugs.
The study aims to develop tobacco modules to be included in an innovative mobile-health (mHealth) intervention (hereon referred to as S4E) and to determine the feasibility and preliminary efficacy of the updated version of S4E in an urban youth-centered community health clinic in Southeast Michigan.
Social networks are thought to hold the potential for shaping behavior on the grounds that social and situational factors more strongly influence behavior than do personality variables. This is a behavioral intervention study that will test a 6-session, small-group, peer-network intervention among adolescent males and females and their friends. The intervention primarily focuses on reducing risky sexual behavior and increasing condom use among adolescent males and females, aged 16-19. The concurrent use of alcohol and marijuana during sex is also a focus as these two substances are widely used among adolescents and fuel risky sexual behavior.
The goal of this 2-arm randomized control trial is to determine the impact of a community health worker delivered coaching intervention, GRIT, on preventing the early initiation of regular use of alcohol and cannabis among adversity-impacted adolescents ages 11-14 who do not regularly use alcohol or cannabis at baseline. The specific aims include: * Aim 1. Examine the effect of GRIT on preventing the early initiation of regular alcohol and cannabis use over time. * Aim 2. Examine the role of youth and caregiver self-regulation in mediating the effect of GRIT on adolescent rates of alcohol and cannabis use. Researchers will compare participants who are randomized to the GRIT intervention to an active control group, receiving a Digital Citizenship Curriculum, to see if those who participate in GRIT experience greater improvements in self-regulation and lower cardiometabolic risks. Participants will: * Be randomized to either receive the GRIT intervention (experimental group) or the Digital Citizenship Curriculum (active control group) * Complete 3 in-person visits at baseline, post-intervention, and 12-month post intervention * Complete HRV assessments using emWave Pro Plus and survey assessments on REDCap during in-person visits. * Participate in six 60-minute sessions conducted over 8 weeks via Zoom with an assigned community-health worker * Be invited to complete a booster session at 6-months post-intervention * Complete online measures at baseline, post-intervention, 6-month, and 12-month post-intervention
Alcohol abuse is the leading cause of death and serious injury among college students, and students also experience significant harms from other types of substance misuse and risk behaviors. The proposed project is a randomized controlled trials that will test the protective effects of Letting Go and Staying Connected, a handbook for parents of students who are transitioning for the first time from home to college, the time when students are at greatest risk. The handbook encourages parent skill development and good management of their student's new independence, providing a clear framework to guide them in parenting at this stage. Targeted outcomes include reduction of substance use and risk behaviors. The primary hypothesis is that students who are in one of the two handbook conditions with their parents will report lower substance use and risk behaviors in the two years after college entry.
The aim of the study is to develop and pilot test a cognitive-behavioral (CBT) intervention for young adults, ages 18-24 with bipolar disorder. The 14-week intervention focuses on improving management of bipolar disorder, reducing involvement in high-risk behaviors, and enhancing psychosocial functioning. The intervention also focuses on issues specific to transition-age youth. The study includes two phases: In phase 1, the intervention will be developed, refined, and openly piloted with several participants. In phase 2,the investigators will conduct a randomized clinical trial, in which 40 participants will be randomized either to receive the intervention right away, or to a 14-week waitlist condition. Participants will be evaluated at baseline, week 5, week 10, and week 14 of the study period, as well as at 3- and 6-month follow up, using measures of mood symptoms, high-risk behaviors, drug and alcohol use, and psychosocial functioning.
The goal of the project is to develop and test an internet/intranet-based Screening, Brief Intervention, and Referral to Treatment (iSBIRT) system for adolescents that targets a broad range of serious health-risks and problem behaviors.
The primary purpose of the study is to determine if the central feature of the Therapeutic Workplace, the abstinence reinforcement contingency, is critical to initiate cocaine abstinence in injection drug using methadone patients who use cocaine consistently during methadone treatment. All subjects initially will be invited to attend the Therapeutic Workplace for an initial period, but abstinence will not be required to work during that time. During this initial period, vouchers will be contingent only on workplace attendance and performance on the training programs. Subjects (n=70) who attend the workplace consistently during the first 4 weeks of treatment, but who continue to use cocaine will be randomly assigned to a Work Only or an Abstinence Plus Work group. Subjects in the Work Only group will continue to be able to work independent of their urinalysis results. However, subjects in the Abstinence Plus Work group will be required to provide urine samples that show evidence of recent cocaine abstinence. Subjects in both groups will be invited to stay in the workplace for 6 months. We expect the subjects in the Abstinence and Work group will achieve higher rates of abstinence than the subjects in the Work Only group. This result would show that the abstinence reinforcement contingency (i.e., the requirement to provide cocaine-free urine samples to work and earn vouchers) is important in the initiation of abstinence in the study population.
Background: - People respond differently to life events and how those events make them feel. They also respond differently to information about the how their actions affect their lives and health. Researchers want to learn more about these differences. In this study, researchers will look at how people respond to an event in their life. Researchers will also look at how people respond to information about how their actions can affect their health. Objective: - To see how people respond differently to life events and information about alcohol and breast cancer. Eligibility: - Women 18 and older who have never been diagnosed with cancer and who drank 5 or more alcoholic drinks in the past week. Design: * This study will take place online. * Participants will be randomly assigned to 1 of 10 groups. * Researchers will ask participants to take part in 2 small studies, 1 about Life Events and 1 about Alcohol and Breast Cancer. * In the Life Events study, participants will write briefly about a time they felt very happy, fearful, angry, or surprised, or they will write about a room in their house. Then they will answer questions about that event. They also will write about a value that is or is not important to them. * In the Alcohol and Breast Cancer study, participants will read a health message about the link between alcohol and breast cancer. Then they will answer questions about what they read and give their thoughts about alcohol and breast cancer. * Both studies should take about 30 minutes.