Mark Williams

Summary

Affiliation: Texas Medical Center
Country: USA

Publications

  1. ncbi request reprint An investigation of concurrent sex partnering in two samples of drug users having large numbers of sex partners
    Mark L Williams
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin, Suite 2516, Houston, TX 77030, USA
    Int J STD AIDS 17:309-14. 2006
  2. ncbi request reprint HIV prevention and street-based male sex workers: an evaluation of brief interventions
    Mark L Williams
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, 77030, USA
    AIDS Educ Prev 18:204-15. 2006
  3. ncbi request reprint Differences in HIV risk behaviors by gender in a sample of Tanzanian injection drug users
    Mark L Williams
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin Street, Suite 2516, Houston, Texas, USA
    AIDS Behav 11:137-44. 2007
  4. pmc An investigation of a personal norm of condom-use responsibility among African American crack cocaine smokers
    M Williams
    School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin Street, Houston, TX 77030, USA
    AIDS Care 20:218-227. 2008
  5. pmc An evaluation of the experiences of rural MSM who accessed an online HIV/AIDS health promotion intervention
    Mark Williams
    University of Texas School of Public Health, Houston, Texas 77030, USA
    Health Promot Pract 11:474-82. 2010
  6. pmc HIV seroprevalence in a sample of Tanzanian intravenous drug users
    Mark L Williams
    School of Public Health, University of Texas Health Science Center at Houston, USA
    AIDS Educ Prev 21:474-83. 2009
  7. pmc The use of fry (embalming fluid and PCP-laced cigarettes or marijuana sticks) among crack cocaine smokers
    Ronald J Peters
    The University of Texas Health Science Center at Houston, TX 77030, USA
    J Drug Educ 38:285-95. 2008
  8. ncbi request reprint Codeine cough syrup use among African-American crack cocaine users
    Ronald J Peters
    University of Texas Health Science Center at Houston, School of Public Health, Houston, TX 77030, USA
    J Psychoactive Drugs 39:97-102. 2007
  9. pmc A psychosocial comparison of New Orleans and Houston crack smokers in the wake of Hurricane Katrina
    Sandra Timpson
    Center for Health Promotion and Prevention, School of Public Health, Houston, Texas 77030, USA
    Subst Use Misuse 44:1695-710. 2009
  10. pmc Accelerated hepatitis B vaccination schedule among drug users: a randomized controlled trial
    Lu Yu Hwang
    Center for Infectious Diseases, Division of Epidemiology and Disease Control, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas 77030, USA
    J Infect Dis 202:1500-9. 2010

Research Grants

  1. Tanzania Injection Drug Use/HIV Prevention Project
    Mark Williams; Fiscal Year: 2006
  2. A Test of Peer Delivered Self-Efficacy Intervention
    Mark Williams; Fiscal Year: 2005
  3. Social Network of a Highly Active HIV/STD Core Group
    Mark Williams; Fiscal Year: 2005
  4. Positive Choices Research Project
    Mark Williams; Fiscal Year: 2007

Detail Information

Publications37

  1. ncbi request reprint An investigation of concurrent sex partnering in two samples of drug users having large numbers of sex partners
    Mark L Williams
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin, Suite 2516, Houston, TX 77030, USA
    Int J STD AIDS 17:309-14. 2006
    ..Efforts should be made in future studies to better capture the complexities of concurrent partnering and to examine the implications of these for disease spread and control...
  2. ncbi request reprint HIV prevention and street-based male sex workers: an evaluation of brief interventions
    Mark L Williams
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, 77030, USA
    AIDS Educ Prev 18:204-15. 2006
    ..Brief interventions to reduce the HIV risks are acceptable to MSWs and are efficacious for reducing unprotected anal sex during paid sexual encounters...
  3. ncbi request reprint Differences in HIV risk behaviors by gender in a sample of Tanzanian injection drug users
    Mark L Williams
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin Street, Suite 2516, Houston, Texas, USA
    AIDS Behav 11:137-44. 2007
    ..Despite differences in sociodemographic, drug use, and sexual behaviors by gender, both male and female injectors in Dar es Salaam exhibit elevated risk of HIV infection associated with drug use...
  4. pmc An investigation of a personal norm of condom-use responsibility among African American crack cocaine smokers
    M Williams
    School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin Street, Houston, TX 77030, USA
    AIDS Care 20:218-227. 2008
    ..Situational self-efficacy and outcome expectations had weaker, yet significant, effects on women's intentions. Given the strong effect of personal norms on men's intentions to use condoms, further research should be undertaken...
  5. pmc An evaluation of the experiences of rural MSM who accessed an online HIV/AIDS health promotion intervention
    Mark Williams
    University of Texas School of Public Health, Houston, Texas 77030, USA
    Health Promot Pract 11:474-82. 2010
    ..Interest in the module was greatest if it was encountered last. Results indicate that rural MSM are willing to enroll in and complete an Internet-delivered HIV/AIDS risk reduction intervention...
  6. pmc HIV seroprevalence in a sample of Tanzanian intravenous drug users
    Mark L Williams
    School of Public Health, University of Texas Health Science Center at Houston, USA
    AIDS Educ Prev 21:474-83. 2009
    ..The factors associated with increased risk of HIV infection suggest further research is needed on the needle use and sexual networks of IDUs...
  7. pmc The use of fry (embalming fluid and PCP-laced cigarettes or marijuana sticks) among crack cocaine smokers
    Ronald J Peters
    The University of Texas Health Science Center at Houston, TX 77030, USA
    J Drug Educ 38:285-95. 2008
    ..05), marijuana use (OR = 12.11, p < or = 0.05), and codeine (syrup) use (OR = 8.10, p < or = 0.05). These findings are important in determining the "cultural novelties" relative to crack and fry use among younger African Americans...
  8. ncbi request reprint Codeine cough syrup use among African-American crack cocaine users
    Ronald J Peters
    University of Texas Health Science Center at Houston, School of Public Health, Houston, TX 77030, USA
    J Psychoactive Drugs 39:97-102. 2007
    ..These findings are important in determining the "cultural novelties" relative to crack and codeine use among younger African Americans...
  9. pmc A psychosocial comparison of New Orleans and Houston crack smokers in the wake of Hurricane Katrina
    Sandra Timpson
    Center for Health Promotion and Prevention, School of Public Health, Houston, Texas 77030, USA
    Subst Use Misuse 44:1695-710. 2009
    ..There were no significant differences between the two groups on either depression or anxiety, but the New Orleans sample scored higher on the self-esteem scale and scored slightly lower on the risk-taking scale...
  10. pmc Accelerated hepatitis B vaccination schedule among drug users: a randomized controlled trial
    Lu Yu Hwang
    Center for Infectious Diseases, Division of Epidemiology and Disease Control, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas 77030, USA
    J Infect Dis 202:1500-9. 2010
    ..Hepatitis B vaccine provides a model for improving uptake and completion of multidose vaccinations in the drug-using community...
  11. ncbi request reprint Effects of exercise intensity on 24-h energy expenditure and substrate oxidation
    M S Treuth
    USDA ARS Children s Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
    Med Sci Sports Exerc 28:1138-43. 1996
    ..The HI exercise RQ was significantly higher than LI. These findings demonstrated higher 24-h EE in the HI than LI protocol, but similar 24-h substrate oxidation rates...
  12. ncbi request reprint Perceived compliance with AZT dosing among a sample of African-American drug users
    M Williams
    Center for Health Promotion Research and Development, School of Public Health, University of Texas Houston, 77225, USA
    Int J STD AIDS 11:57-63. 2000
    ....
  13. pmc An investigation of condom use by frequency of sex
    M Williams
    School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin, Houston, TX 77030, USA
    Sex Transm Infect 77:433-5. 2001
    ..To examine the association between condom use and frequency of sex across sexual partner types...
  14. ncbi request reprint Psychological correlates of trading sex for money among African American crack cocaine smokers
    Jan M H Risser
    Division of Epidemiology, Center for Infectious Diseases, University of Texas School of Public Health, Houston Health Science Center, Houston, Texas, USA
    Am J Drug Alcohol Abuse 32:645-53. 2006
    ..These differences suggest that interventions should address self-esteem, risk-taking practices, depression and anxiety as well as other psychosocial factors...
  15. ncbi request reprint Characteristics, drug use, and sex partners of a sample of male sex workers
    Sandra C Timpson
    Center for Health Promotion and Prevention, School of Public Health, Houston, Texas 77030, USA
    Am J Drug Alcohol Abuse 33:63-9. 2007
    ..In the past 30 days they reported an average of 56 male partners and 5 female partners. Of the 179 men, 152 had been tested for HIV and knew their status. Twenty-six percent of those tested had tested positive...
  16. ncbi request reprint HIV risk among a sample of drug using male sex workers
    Mark L Williams
    School of Public Health, University of Texas Health Science Center, Houston, USA
    AIDS 17:1402-4. 2003
  17. ncbi request reprint Three types of adherence to HIV antiretroviral therapy and their association with AIDS diagnosis, medication side-effects, beliefs about antiretroviral therapy, and beliefs about HIV disease
    Lena Nilsson Schönnesson
    Infectious Disease Clinic Gay Men s Health Clinic, Karolinska University Hospital, Stockholm, Sweden
    Int J STD AIDS 18:369-73. 2007
    ..Data suggest that health beliefs may vary across type of adherence and that adherence behaviours may be a coping strategy to adjust antiretroviral therapy to one's daily living...
  18. pmc Perceptions of financial payment for research participation among African-American drug users in HIV studies
    Jacquelyn Slomka
    Division of Health Promotion and Behavioral Sciences, School of Public Health, University of Texas Health Science Center at Houston, 7000 Fannin, Houston, TX 77030, USA
    J Gen Intern Med 22:1403-9. 2007
    ..Little is known about these participants' own views regarding payment for research participation...
  19. ncbi request reprint Concordance between sexual behavior and sexual identity in street outreach samples of four racial/ethnic groups
    Michael W Ross
    WHO Center for Health Promotion and Prevention Research, School of Public Health, University of Texas, Houston, Texas 77225, USA
    Sex Transm Dis 30:110-3. 2003
    ..There is a discrepancy between self-reported sexual identity and sexual behavior. The magnitude of this discrepancy is unclear, as is its variation across race/ethnicity and gender...
  20. ncbi request reprint Drug use careers and blood-borne pathogen risk behavior in male and female Tanzanian heroin injectors
    Michael W Ross
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas, Houston Texas 77225, USA
    Am J Trop Med Hyg 79:338-43. 2008
    ..These data confirm that heroin injecting is well established in large cities in east Africa, and that HIV prevention in the region must now include drug injectors and other drug users...
  21. ncbi request reprint Effective targeted and community HIV/STD prevention programs
    Michael W Ross
    WHO Center for Health Promotion and Prevention Research, School of Public Health, University of Texas, PO Box 20036, Houston TX 77225, USA
    J Sex Res 39:58-62. 2002
    ....
  22. ncbi request reprint Sexual risk behaviours and STIs in drug abuse treatment populations whose drug of choice is crack cocaine
    Michael W Ross
    WHO Center for Health Promotion and Prevention Research, University of Texas, PO Box 20186, Houston TX 77225, USA
    Int J STD AIDS 13:769-74. 2002
    ..These data suggest that drug users generally, and crack-using populations in particular, in drug treatment programmes should be routinely screened for STIs as an integral part of drug treatment...
  23. ncbi request reprint The impact of a situationally focused individual human immunodeficiency virus/sexually transmitted disease risk-reduction intervention on risk behavior in a 1-year cohort of Nigerian military personnel
    Michael W Ross
    WHO Center for Health Promotion and Prevention Research, School of Public Health, University of Texas, P O Box 20036, Houston, TX 77225, USA
    Mil Med 171:970-5. 2006
    ..These data suggest that relatively brief situationally focused individual interventions are effective in military and West African contexts in reducing HIV/STD risk behaviors...
  24. ncbi request reprint Drug injection and sexual mixing patterns of drug-using male sex workers
    Mark L Williams
    Center for Health Promotion and Prevention Research, School of Public Health, University of Texas Health Science Center at Houston, Houston, Texas 77030, USA
    Sex Transm Dis 30:571-4. 2003
    ..Drug-using male sex workers (DUMSWs) are known to have large numbers of drug injection and sex partners...
  25. ncbi request reprint Formative evaluation of an intervention to increase compliance to HIV therapies: the ALP project
    Andrew M Fourney
    Public Health Institute, Sacramento, CA, USA
    Health Promot Pract 4:165-70. 2003
    ..This type of evaluation is a cost-effective method that can be used to develop effective interventions and obtain community buy-in...
  26. pmc A randomized control trial of Internet-delivered HIV prevention targeting rural MSM
    Anne M Bowen
    Department of Psychology, University of Wyoming, Department 3415, 1000 E University, Laramie, WY 82071, USA
    Health Educ Res 22:120-7. 2007
    ..Participants said they would participate again. This RCT provides support for the acceptability and efficacy of the Internet for delivering HIV prevention messages to rural MSM...
  27. ncbi request reprint Situational correlates of condom use in a sample of African-American drug users who are primarily crack cocaine users
    Michael W Ross
    WHO Center for Health Promotion and Prevention Research, School of Public Health, University of Texas, Houston Health Sciences Center, Houston TX 77225, USA
    AIDS Behav 7:55-60. 2003
    ..The Sitpres methodology was successfully used by these crack users and data indicated that it was sexual variables, rather than drug-associated variables, that were significantly associated with condom use...
  28. ncbi request reprint HIV/AIDS and injection drug use in the neighborhoods of Dar es Salaam, Tanzania
    Sheryl A McCurdy
    University of Texas Health Science Center at Houston, School of Public Health, WHO Center for Health Promotion and Prevention Research, Houston, TX 77030, USA
    Drug Alcohol Depend 82:S23-7. 2006
    ..Geographic distance is an indicator of recent adoption of IDU in neighborhoods and correlates strongly with the distribution of syringes containing HIV-positive blood residue...
  29. ncbi request reprint Condom use behaviors in HIV-infected African American crack cocaine users
    Sandra C Timpson
    Center for Health Promotion and Prevention, School of Public Health, University of Texas Houston, Houston, Texas 77030, USA
    Subst Abus 24:211-20. 2003
    ..The inconsistent condom use by these HIV+ individuals threatens the progress that has been made to stem the epidemic...
  30. pmc The social/sexual environment of gay men residing in a rural frontier state: implications for the development of HIV prevention programs
    Mark L Williams
    Center for Health Promotion and Prevention Research, University of Texas School of Public Health, Houston, TX 77030, USA
    J Rural Health 21:48-55. 2005
    ..The incidence and prevalence of HIV/AIDS is increasing among rural men who have sex with men (MSM). Yet little is known about the social/ sexual environment of rural frontier areas...
  31. pmc Spatial bridging in a network of drug-using male sex workers
    Mark L Williams
    University of Texas School of Public Health at Houston, San Antonio Regional Campus, 7703 Floyd Curl Drive, MC 7976, San Antonio, TX 78284 7976, USA
    J Urban Health 82:i35-42. 2005
    ..Despite the small sample size, this study found that many drug-using MSWs spatially bridge sexual networks in cities where they trade sex for money...
  32. pmc Reported condom use and condom use difficulties in street outreach samples of men of four racial and ethnic backgrounds
    E James Essien
    The HIV Prevention Research Group, College of Pharmacy, University of Houston, 1441 Moursund Street, Houston, TX 77030, USA
    Int J STD AIDS 16:739-43. 2005
    ..These data suggest that racial/ethnic targeting of condom use is likely to be most efficacious in increasing condom use in men...
  33. pmc A theme issue by, for, and about Africa: new injecting practice increases HIV risk among drug users in Tanzania
    Sheryl A McCurdy
    BMJ 331:778. 2005
  34. ncbi request reprint A history of drug use and childhood sexual abuse among incarcerated males in a county jail
    Regina J Johnson
    The University of Texas at Austin, School of Nursing, Austin, Texas 78701 1499, USA
    Subst Use Misuse 40:211-29. 2005
    ....
  35. ncbi request reprint Prevalence of childhood sexual abuse among incarcerated males in county jail
    Regina J Johnson
    The University of Texas at Austin School of Nursing, TX, USA
    Child Abuse Negl 30:75-86. 2006
    ..The current study examined the prevalence and characteristics of childhood sexual abuse in a jailed-based population...
  36. ncbi request reprint Virtual and physical venues as contexts for HIV risk among rural men who have sex with men
    Keith J Horvath
    Department of Psychology, University of Wyoming, WY, USA
    Health Psychol 25:237-42. 2006
    ..Highest rates of risk behaviors were associated with Internet dating and venues in which immediate sexual encounters typically occur, suggesting that prevention in rural areas should target multiple-risk environments...
  37. ncbi request reprint Factors associated with suboptimal antiretroviral therapy adherence to dose, schedule, and dietary instructions
    Lena Nilsson Schönnesson
    Infectious Disease Clinic, Gay Men s Health Center, Department SOS Karolinska Institute, Karolinska University Hospital, Sodersjukhuset, SE 118 83 Stockholm, Sweden
    AIDS Behav 11:175-83. 2007
    ..To improve adherence to dose and schedule instructions, clinicians caring for patients with HIV should assess and treat anxiety and be alert to HIV-related PTSD symptoms...

Research Grants16

  1. Tanzania Injection Drug Use/HIV Prevention Project
    Mark Williams; Fiscal Year: 2006
    ....
  2. A Test of Peer Delivered Self-Efficacy Intervention
    Mark Williams; Fiscal Year: 2005
    ..Outcomes of interest will be condom use, condom use self-efficacy beliefs, and the motivational and normative factors that have an impact on self-efficacy beliefs. ..
  3. Social Network of a Highly Active HIV/STD Core Group
    Mark Williams; Fiscal Year: 2005
    ..abstract_text> ..
  4. Positive Choices Research Project
    Mark Williams; Fiscal Year: 2007
    ..About one-third of newly infected African Americans are women. The disease in the African American community is directly and indirectly linked to the crack cocaine epidemic. ..