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The Methamphetamine Use Continuum and Associated Risk Factors Among Cisgender Men and Transgender People With Male Sex Partners
The Methamphetamine Use Continuum and Associated Risk Factors Among Cisgender Men and Tran...
The Methamphetamine Use Continuum and Associated Risk Factors Among Cisgender Men and Transgender People With Male Sex Partners

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자료유형  
 학위논문 서양
최종처리일시  
20260202102934
ISBN  
9798288834967
DDC  
614.4
저자명  
Barry, Michael P.
서명/저자  
The Methamphetamine Use Continuum and Associated Risk Factors Among Cisgender Men and Transgender People With Male Sex Partners
발행사항  
[Sl] : University of Washington, 2025
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2025
형태사항  
91 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-01, Section: A.
주기사항  
Advisor: Golden, Matthew R.
학위논문주기  
Thesis (Ph.D.)--University of Washington, 2025.
초록/해제  
요약The methamphetamine (meth) epidemic in the United States (US) disproportionately impacts cisgender men and transgender people who have sex with males (CMTSM). This confers a disparate burden of meth-related sequelae, including cardiovascular, cognitive, and psychiatric conditions. Among CMTSM, meth is syndemic with HIV, posing a threat to the US initiative of Ending the HIV Epidemic. Behavioral and pharmaceutical interventions for stimulant use disorder (StUD) with meth have been developed, yet none have been brought to scale. Moreover, while period and lifetime prevalences of meth use among CMTSM have been described, little is known about how often individual CMTSM initiate meth use and how their use of meth changes over time. Understanding these meth use patterns may directly inform novel meth interventions.We leveraged Community-Based Participatory Research principles and a sequential, mixed-methods research design to characterize meth use patterns among CMTSM. We partnered with two community-based organizations, Peer Seattle and Seattle's LGBTQ Center, throughout the research. In our first study, we used a phenomenological approach to conduct a qualitative study of meth use patterns among CMTSM in the Seattle, WA, US Area. We analyzed qualitative data with team-based thematic analysis. In our second study, using qualitative findings and available validated instruments, we designed a cross-sectional instrument to identify meth use patterns among CMTSM. We used the Think Aloud cognitive interviewing method to refine this instrument. After surveying CMTSM from across the US with this instrument, we described (i) the proportion of CMTSM who initiated meth and, (ii) among those who initiated meth use, the proportion who developed StUD or meth-related adverse outcomes (MRAO). We then used time-to-event analyses to describe median (i) age at meth initiation and (ii) interval from meth initiation to the development of StUD/MRAO. We then used log regression models to identify demographic correlates of (i) initiating meth and (2) developing StUD/MRAO. In our third study, we used log regression models to identify health and socioeconomic correlates of (i) meth initiation and (ii) developing StUD/MRAO. We then used time-to-event analyses to describe the median intervals between onsets of each correlate and (i) meth initiation and (ii) first evidence of StUD/MRAO. We then examined whether the onset of correlates tended to precede, co-occur with, or follow both (i) meth initiation and (ii) the development of StUD/MRAO.  In the first study, we conducted qualitative interviews with 49 CMTSM. We identified three themes: (1) CMTSM are introduced to meth in a variety of settings and contexts; (2) frequency, volumes, and meth administration routes vary widely over time; and (3) patterns of meth use are influenced by the desire to cope with changing life circumstances and associated stressors. In the second study, fifteen CMTSM participated in cognitive interviews, allowing us to iteratively refine the study instrument. Including the original instrument, we produced nine preliminary versions of the instrument over twelve study visits, before the tenth version was evaluated with three participants and used for data collection. From June-October 2024, 1,720 CMTSM participated in the cross-sectional data collection effort. Among them, 428 (25%) initiated meth. Meth initiation was less prevalent among CMTSM assigned female sex at birth than those assigned male sex at birth (aPR: 0.41 [95% CI: 0.20, 0.71]). Meth initiation was also negatively associated with educational attainment. Among those who initiated meth and provided sufficient data to determine StUD/MRAO status (n=403), 67% met 1 criterion of StUD/MRAO, and these criteria were first met a median of 6 years after meth initiation. We did not identify demographic correlates of StUD/MRAO. In the third study, meth initiation was associated with HIV seropositivity, history of sex exchange, and housing instability. On average, meth initiation preceded HIV diagnosis, occurred the same year as first episode of sex exchange, and followed first episode of housing instability. Among those who initiated meth, the development of StUD/MRAO was associated with HIV seropositivity and a composite social vulnerability variable, which accounted for inability to afford basic needs, housing instability or homelessness, and sex exchange. All correlates of StUD/MRAO, on average, preceded the development of StUD/MRAO.Our findings reflect that the meth epidemic among CMTSM is heterogenous, but that most CMTSM who initiate meth are likely to develop StUD/MRAO. We observed clear socioeconomic disparities in terms of both initiating meth and, among those who initiate, developing StUD/MRAO. The HIV epidemic among CMTSM shares these disparities, suggesting that the ongoing syndemic of HIV and meth in this population is driven by social inequities - namely wealth disparities and economic deprivation among the most vulnerable. Public health interventions meant to prevent HIV among CMTSM should include meth-specific considerations. In turn, novel interventions for meth use that specifically aim to prevent the development of StUD/MRAO may be explored, as many CMTSM take years to develop these outcomes after first initiating meth. Such interventions may be offered alongside conventional HIV prevention and care services. However, addressing root causes of the HIV and meth syndemic appears to require systemic interventions, including the implementation of social programs and policies that support economic equity among CMTSM populations. 
일반주제명  
Epidemiology
일반주제명  
Public health
일반주제명  
Pharmacology
일반주제명  
American studies
키워드  
Community-based participatory research
키워드  
Methamphetamine
키워드  
Transgender populations
키워드  
Stimulant use disorder
키워드  
CMTSM
기타저자  
University of Washington Epidemiology
기본자료저록  
Dissertations Abstracts International. 87-01A.
전자적 위치 및 접속  
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■1001  ▼aBarry,  Michael  P.
■24510▼aThe  Methamphetamine  Use  Continuum  and  Associated  Risk  Factors  Among  Cisgender  Men  and  Transgender  People  With  Male  Sex  Partners
■260    ▼a[Sl]▼bUniversity  of  Washington▼c2025
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■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-01,  Section:  A.
■500    ▼aAdvisor:  Golden,  Matthew  R.
■5021  ▼aThesis  (Ph.D.)--University  of  Washington,  2025.
■520    ▼aThe  methamphetamine  (meth)  epidemic  in  the  United  States  (US)  disproportionately  impacts  cisgender  men  and  transgender  people  who  have  sex  with  males  (CMTSM).  This  confers  a  disparate  burden  of  meth-related  sequelae,  including  cardiovascular,  cognitive,  and  psychiatric  conditions.  Among  CMTSM,  meth  is  syndemic  with  HIV,  posing  a  threat  to  the  US  initiative  of  Ending  the  HIV  Epidemic.  Behavioral  and  pharmaceutical  interventions  for  stimulant  use  disorder  (StUD)  with  meth  have  been  developed,  yet  none  have  been  brought  to  scale.  Moreover,  while  period  and  lifetime  prevalences  of  meth  use  among  CMTSM  have  been  described,  little  is  known  about  how  often  individual  CMTSM  initiate  meth  use  and  how  their  use  of  meth  changes  over  time.  Understanding  these  meth  use  patterns  may  directly  inform  novel  meth  interventions.We  leveraged  Community-Based  Participatory  Research  principles  and  a  sequential,  mixed-methods  research  design  to  characterize  meth  use  patterns  among  CMTSM.  We  partnered  with  two  community-based  organizations,  Peer  Seattle  and  Seattle's  LGBTQ  Center,  throughout  the  research.  In  our  first  study,  we  used  a  phenomenological  approach  to  conduct  a  qualitative  study  of  meth  use  patterns  among  CMTSM  in  the  Seattle,  WA,  US  Area.  We  analyzed  qualitative  data  with  team-based  thematic  analysis.  In  our  second  study,  using  qualitative  findings  and  available  validated  instruments,  we  designed  a  cross-sectional  instrument  to  identify  meth  use  patterns  among  CMTSM.  We  used  the  Think  Aloud  cognitive  interviewing  method  to  refine  this  instrument.  After  surveying  CMTSM  from  across  the  US  with  this  instrument,  we  described  (i)  the  proportion  of  CMTSM  who  initiated  meth  and,  (ii)  among  those  who  initiated  meth  use,  the  proportion  who  developed  StUD  or  meth-related  adverse  outcomes  (MRAO).  We  then  used  time-to-event  analyses  to  describe  median  (i)  age  at  meth  initiation  and  (ii)  interval  from  meth  initiation  to  the  development  of  StUD/MRAO.  We  then  used  log  regression  models  to  identify  demographic  correlates  of  (i)  initiating  meth  and  (2)  developing  StUD/MRAO.  In  our  third  study,  we  used  log  regression  models  to  identify  health  and  socioeconomic  correlates  of  (i)  meth  initiation  and  (ii)  developing  StUD/MRAO.  We  then  used  time-to-event  analyses  to  describe  the  median  intervals  between  onsets  of  each  correlate  and  (i)  meth  initiation  and  (ii)  first  evidence  of StUD/MRAO.  We  then  examined  whether  the  onset  of  correlates  tended  to  precede,  co-occur  with,  or  follow  both  (i)  meth  initiation  and  (ii)  the  development  of  StUD/MRAO.  In  the  first  study,  we  conducted  qualitative  interviews  with  49  CMTSM.  We  identified  three  themes:  (1)  CMTSM  are  introduced  to  meth  in  a  variety  of  settings  and  contexts;  (2)  frequency,  volumes,  and  meth  administration  routes  vary  widely  over  time;  and  (3)  patterns  of  meth  use  are  influenced  by  the  desire  to  cope  with  changing  life  circumstances  and  associated  stressors.  In  the  second  study,  fifteen  CMTSM  participated  in  cognitive  interviews,  allowing  us  to  iteratively  refine  the  study  instrument.  Including  the  original  instrument,  we  produced  nine  preliminary  versions  of  the  instrument  over  twelve  study  visits,  before  the  tenth  version  was  evaluated  with  three  participants  and  used  for  data  collection.  From  June-October  2024,  1,720  CMTSM  participated  in  the  cross-sectional  data  collection  effort.  Among  them,  428  (25%)  initiated  meth.  Meth  initiation  was  less  prevalent  among  CMTSM  assigned  female  sex  at  birth  than  those  assigned  male  sex  at  birth  (aPR:  0.41  [95%  CI:  0.20,  0.71]).  Meth  initiation  was  also  negatively  associated  with  educational  attainment.  Among  those  who  initiated  meth  and  provided  sufficient  data  to  determine  StUD/MRAO  status  (n=403),  67%  met  1  criterion  of  StUD/MRAO,  and  these  criteria  were  first  met  a  median  of  6  years  after  meth  initiation.  We  did  not  identify  demographic  correlates  of  StUD/MRAO.  In  the  third  study,  meth  initiation  was  associated  with  HIV  seropositivity,  history  of  sex  exchange,  and  housing  instability.  On  average,  meth  initiation  preceded  HIV  diagnosis,  occurred  the  same  year  as  first  episode  of  sex  exchange,  and  followed  first  episode  of  housing  instability.  Among  those  who  initiated  meth,  the  development  of  StUD/MRAO was  associated  with  HIV  seropositivity  and  a  composite  social  vulnerability  variable,  which  accounted  for  inability  to  afford  basic  needs,  housing  instability  or  homelessness,  and  sex  exchange.  All  correlates  of  StUD/MRAO,  on  average,  preceded  the  development  of  StUD/MRAO.Our  findings  reflect  that  the  meth  epidemic  among  CMTSM  is  heterogenous,  but  that  most  CMTSM  who  initiate  meth  are  likely  to  develop  StUD/MRAO.  We  observed  clear  socioeconomic  disparities  in  terms  of  both  initiating  meth  and,  among  those  who  initiate,  developing  StUD/MRAO.  The  HIV  epidemic  among  CMTSM  shares  these  disparities,  suggesting  that  the  ongoing  syndemic  of  HIV  and  meth  in  this  population  is  driven  by  social  inequities  -  namely  wealth  disparities  and  economic  deprivation  among  the  most  vulnerable.  Public  health  interventions  meant  to  prevent  HIV  among  CMTSM  should  include  meth-specific  considerations.  In  turn,  novel  interventions  for  meth  use  that  specifically  aim  to  prevent  the  development  of  StUD/MRAO  may  be  explored,  as  many  CMTSM  take  years  to  develop  these  outcomes  after  first  initiating  meth.  Such  interventions  may  be  offered  alongside  conventional  HIV  prevention  and  care  services.  However,  addressing  root  causes  of  the  HIV  and  meth  syndemic  appears  to  require  systemic  interventions,  including  the  implementation  of  social  programs  and  policies  that  support  economic  equity  among  CMTSM  populations. 
■590    ▼aSchool  code:  0250.
■650  4▼aEpidemiology
■650  4▼aPublic  health
■650  4▼aPharmacology
■650  4▼aAmerican  studies
■653    ▼aCommunity-based  participatory  research
■653    ▼aMethamphetamine
■653    ▼aTransgender  populations
■653    ▼aStimulant  use  disorder
■653    ▼aCMTSM
■690    ▼a0766
■690    ▼a0573
■690    ▼a0323
■690    ▼a0419
■71020▼aUniversity  of  Washington▼bEpidemiology.
■7730  ▼tDissertations  Abstracts  International▼g87-01A.
■790    ▼a0250
■791    ▼aPh.D.
■792    ▼a2025
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17356493▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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