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Scholarly Works (16 results)

  • Thesis
  • Peer Reviewed
UC San Diego Electronic Theses and Dissertations (2024)

Background: Nationally, there is a sharp increase in older adults using opioids and seeking treatment for opioid use disorder (OUD). Increasing knowledge of harm reduction principles and access to harm reduction supplies and services are effective ways to reduce opioid-related harms such as overdose. However, older adults are often overlooked in harm reduction efforts in part due to stigmatizing beliefs that older adults do not use drugs. The increasing prevalence of OUD among older adults presents unique challenges in providing age-appropriate tailored harm reduction services. This dissertation aimed to assess knowledge, utilization, and ownership of harm reduction supplies and services among patients aged 55 and older in opioid treatment programs (OTPs) and explore the acceptability, feasibility, and implementation considerations of integrating tailored harm reduction interventions for this population.Methods: We conducted a sequential mixed methods approach within two OTPs across three studies. Study 1 utilized cross-sectional surveys from 75 OTP patients to assess opioid overdose knowledge, naloxone ownership, and utilization of harm reduction services. Multivariable logistic regression examined correlates of naloxone ownership. Study 2 conducted qualitative interviews with 25 OTP patients to explore acceptability and perceived barriers to accessing harm reduction services. Study 3 interviewed 15 OTP providers to evaluate the acceptability, feasibility, and appropriateness of delivering age-tailored harm reduction services. Results: In Study 1, 65% of participants owned naloxone at the time of study. However, only 9% carried naloxone and 17% had ever received overdose education. Correlates of naloxone ownership in the adjusted model included age in years and familiarity with naloxone distribution programs; opioid overdose knowledge was not significantly associated with naloxone ownership. Study 2 revealed high acceptability of harm reduction services among older adult patients, but identified barriers including intersectional stigma, logistical challenges, and lack of tailored and age-appropriate services. Study 3 found that OTP providers viewed integrating age-tailored harm reduction services as necessary and important but noted significant implementation challenges such as resource limitations, patient complexity, and sustainability. Conclusions: While naloxone ownership was moderate among older adults in OTPs, there were significant gaps in having received overdose education and naloxone carriage. Patients and providers reported high acceptability and perceived need of integrating age-appropriate harm reduction interventions but identified significant multi-level barriers to care. Our findings highlight the critical need for targeted interventions, policy changes, and implementation strategies to increase access and sustainability of age-appropriate and tailored harm reduction services for older adults in OTPs.

    • Article
    • Peer Reviewed
    UC San Francisco Previously Published Works (2021)

    Background

    Adults age ≥ 50 are among the fastest growing populations in correctional supervision and are medically underserved while experiencing unique health disparities. Community-living older adults, referred to as "justice-involved," are people who have been recently arrested, or are on probation or parole. Although medical complexity is common among incarcerated older adults, the occurrence of medical morbidity, substance use disorder (SUD), and mental illness among justice-involved older adults living in US communities is poorly understood.

    Objective

    To estimate the prevalence of medical multimorbidity (≥ 2 chronic medical diseases), SUDs, and mental illness among justice-involved adults age ≥ 50, and the co-occurrence of these conditions.

    Design

    Cross-sectional analysis.

    Participants

    A total of 34,898 adults age ≥ 50 from the 2015 to 2018 administrations of the US National Survey on Drug Use and Health.

    Main measures

    Demographic characteristics of justice-involved adults age ≥ 50 were compared with those not justice-involved. We estimated prevalence of mental illness, chronic medical diseases, and SUD among adults age ≥ 50 reporting past-year criminal justice system involvement. Logistic regression was used to estimate the odds of these conditions and co-occurrence of conditions, comparing justice-involved to non-justice-involved adults.

    Key results

    An estimated 1.2% (95% confidence interval [CI] = 1.1-1.3) of adults age > 50 experienced criminal justice involvement in the past year. Compared with non-justice-involved adults, justice-involved adults were at increased odds for mental illness (adjusted odds ratio [aOR] = 3.04, 95% CI = 2.09-4.41) and SUD (aOR = 8.10, 95% CI = 6.12-10.73), but not medical multimorbidity (aOR = 1.15, 95% CI = 0.85-1.56). Justice-involved adults were also at increased odds for all combinations of the three outcomes, including having all three simultaneously (aOR = 8.56, 95% CI = 4.10-17.86).

    Conclusions

    Community-based middle-aged and older adults involved in the criminal justice system are at high risk for experiencing co-occurring medical multimorbidity, mental illness, and SUD. Interventions that address all three social and medical risk factors are needed for this population.
      Cover page: Medical Multimorbidity, Mental Illness, and Substance Use Disorder among Middle-Aged and Older Justice-Involved Adults in the USA, 2015–2018
      • Article
      • Peer Reviewed
      UC San Diego Previously Published Works (2023)
      BACKGROUND: The use of cannabis among older adults is increasing in the United States. While cannabis use has been suggested to help alleviate chronic symptoms experienced by older adults, its potential adverse effects may lead to unintended consequences, including increased acute healthcare utilization related to its use. The objective of this study was to examine trends in cannabis-related emergency department (ED) visits in California. METHODS: Using data from the Department of Healthcare Access and Information, we conducted a trend analysis of cannabis-related ED visits from all acute care hospitals in California from 2005 to 2019. For each calendar year, we determined the cannabis-related ED visit rate per 100,000 ED visits for adults aged ≥65 utilizing primary or secondary diagnosis codes. We estimated the absolute and relative changes in overall cannabis-related visit rates during the study period and by subgroup, including age (65-74, 75-84, ≥85), race/ethnicity, sex, payer/insurance, Charlson comorbidity index score, and cannabis-related diagnosis code. RESULTS: The cannabis-related ED visit rate increased significantly for adults aged ≥65 and all subgroups (p < 0.001). The overall rate increased from 20.7 per 100,000 visits in 2005 to 395.0 per 100,000 ED visits in 2019, a 1804% relative increase. By race/ethnicity, older Black adults had the highest ED visit rate in 2019 and the largest absolute increase while older males had a higher ED visit rate in 2019 and a greater absolute increase than older women. Older adults with a higher Charlson score had a higher ED visit rate in 2019 and a larger absolute increase during the study period. CONCLUSION: Cannabis-related ED visits are increasing among older adults in California and are an adverse effect of cannabis use. Asking about cannabis use and providing education about its use should be a part of routine medical care for older adults.
        Cover page: Trends in emergency department visits associated with cannabis use among older adults in California, 2005-2019.
        • Article
        • Peer Reviewed
        UCLA Previously Published Works (2022)

        Background

        Nationally, there is a sharp increase in older adults with opioid use disorder (OUD). However, we know little of the acute healthcare utilization patterns and medical comorbidities among this population.

        Objective

        This study describes the prevalence of chronic conditions, patterns of inpatient utilization, and correlates of high inpatient utilization among older adults with OUD in New York City (NYC).

        Design

        Retrospective longitudinal cohort study.

        Participants

        Patients aged ≥55 with OUD hospitalized in NYC in 2012 identified using data from New York State's Statewide Planning and Research Cooperative System (SPARCS).

        Main measures

        The prevalence of comorbid substance use diagnoses, chronic medical disease, and mental illness was measured using admission diagnoses from the index hospitalization. We calculated the ICD-Coded Multimorbidity-Weighted Index (MWI-ICD) for each patient to measure multimorbidity. We followed the cohort through September 30, 2015 and the outcome was the number of rehospitalizations for inpatient services in NYC. We compared patient-level factors between patients with the highest use of inpatient services (≥7 rehospitalizations) during the study period to low utilizers. We used multiple logistic regression to examine possible correlates of high inpatient utilization.

        Key results

        Of 3669 adults aged ≥55 with OUD with a hospitalization in 2012, 76.4% (n=2803) had a subsequent hospitalization and accounted for a total of 22,801 rehospitalizations during the study period. A total of 24.7% of the cohort (n=906) were considered high utilizers and had a higher prevalence of alcohol and cocaine-related diagnoses, congestive heart failure, diabetes, schizophrenia, and chronic obstructive pulmonary disease. Multivariable predictors of high utilization included being a Medicaid beneficiary (adjusted odds ratio [aOR]=1.70, 95% confidence interval [CI]=1.37-2.11), alcohol-related diagnoses (aOR=1.43, 95% CI: 1.21-1.69), and increasing comorbidity measured by MWI-ICD (highest MWI-ICD quartile: aOR=1.98, 95% CI=1.59-2.48).

        Conclusions

        Among older adults with OUD admitted to the hospital, multimorbidity is strongly associated with high inpatient utilization.
          Cover page: Multimorbidity and Inpatient Utilization Among Older Adults with Opioid Use Disorder in New York City
          • Article
          • Peer Reviewed
          UC San Diego Previously Published Works (2024)
          Racism is a pervasive threat to health with differential impact based on race and ethnicity. Considering the continued perpetration and visibility of racism online and in the news, vicarious racism, or secondhand racism when hearing about or witnessing racism being committed against members of ones ethnic or racial group, is a particularly urgent threat in the context of such disparities and their subsequent health consequences. The current study examines if frequency of exposure to vicarious racism and the emotional impact of those experiences are linked to psychoactive substance use, and explores the role of ethnic identity in moderating these relationships. In a cross-sectional survey, 504 adult participants aged 18-78 (M age = 30.15, SD = 11.52, 52.6% female) identifying as Black/African American or Latine reported on their experiences with vicarious racism and alcohol, marijuana, and tobacco use over the past 30 days. Logistic regression was utilized to test hypotheses. Primary findings indicate that greater emotional impact of vicarious racism was associated with a 50% increase in odds of alcohol consumption and that ethnic identity moderated the association between vicarious racism and marijuana use. Greater emotional impact of vicarious racism was related to more marijuana use for those lower on ethnic identity, whereas there was no association for those higher on ethnic identity. Vicarious racism was not related to tobacco use. Results suggest that ethnic identity might be protective in the association of vicarious racism on substance use. Further research on this topic is needed as vicarious racism becomes an increasingly common experience among marginalized populations.
            Cover page: Associations between vicarious racism and psychoactive substance use depend on strength of ethnic identity.
            • Article
            • Peer Reviewed
            UC San Diego Previously Published Works (2017)

            Background

            Alcohol use is common among older adults, and this population has unique risks with alcohol consumption in even lower amounts than younger persons. No recent studies have estimated trends in alcohol use including binge alcohol use and alcohol use disorders (AUD) among older adults.

            Methods

            We examined alcohol use among adults age ≥50 in the National Survey on Drug Use and Health (NSDUH) from 2005 to 2014. Trends of self-reported past-month binge alcohol use and AUD were estimated. Logistic regression models were used to examine correlates of binge alcohol use and AUD.

            Results

            The prevalence of both past-month binge alcohol use and AUD increased significantly among adults age ≥50 from 2005/2006 to 2013/2014, with a relative increase of 19.2% for binge drinking (linear trend p<0.001) and a 23.3% relative increase for AUD (linear trend p=0.035). While males had a higher prevalence of binge alcohol use and AUD compared to females, there were significant increases in both among females. In adjusted models of aggregated data, being Hispanic, male, and a smoker or illicit drug user were associated with binge alcohol use, while being male, a smoker, an illicit drug user, or reporting past-year depression or mental health treatment were associated with AUD.

            Conclusions

            Alcohol use among older adults is increasing in the US, including past-month binge alcohol use and AUD with increasing trends among females. Providers and policymakers need to be aware of these changes to address the increase of older adults with unhealthy drinking.
              • Article
              • Peer Reviewed
              UC San Diego Previously Published Works (2021)

              Background/objectives

              Cannabis use among older adults is increasing sharply in the United States. While the risks and benefits of cannabis use remain unclear, it is important to monitor risk factors for use, including low perception of harm. The objective of this study was to estimate recent national trends in perceived risk associated with cannabis use among older adults.

              Design

              Trend analysis.

              Setting/participants

              A total of 18,794 adults aged 65 and older participating in the 2015-2019 National Survey on Drug Use and Health, a cross-sectional nationally representative survey of non-institutionalized individuals in the United States.

              Measurements

              We estimated the prevalence of older adults who believe that people who smoke cannabis once or twice a week are at great risk of harming themselves physically and in other ways. This was examined across cohort years and stratified by demographic characteristics, diagnosis of chronic disease, past-month tobacco and binge alcohol use, and all-cause emergency department use.

              Results

              Between 2015 and 2019, perceived risk associated with regular use decreased from 52.6% to 42.7%, an 18.8% relative decrease (p < 0.001). Decreases in perceived risk were detected in particular among those never married (a 32.6% relative decrease), those who binge drink (a 31.3% relative decrease), use tobacco (a 26.8% relative decrease), have kidney disease (a 32.1% relative decrease), asthma (a 31.7% relative decrease), heart disease (a 16.5% relative decrease), chronic obstructive pulmonary disease (a 21.5% relative decrease), two or more chronic conditions (a 20.2% relative decrease), and among those reporting past-year emergency department use (a 21.0% relative decrease) (ps < 0.05).

              Conclusions

              The perceived risk of regular cannabis use is decreasing among older adults. We detected sharp decreases in risk perception among those with chronic disease and high-risk behaviors, including tobacco and binge alcohol use. As the number of older adults who use cannabis increases, efforts are needed to raise awareness of the possible adverse effects with special emphasis on vulnerable groups.
                Cover page: Decreasing perceived risk associated with regular cannabis use among older adults in the United States from 2015 to 2019.
                • Article
                • Peer Reviewed
                UC San Diego Previously Published Works (2022)

                Background

                Recent literature suggests that the gap in prevalence of binge drinking between men and women is closing, but little is known about sex-specific differences in trends and correlates of binge drinking among older Americans.

                Methods

                A total of 18,794 adults, aged 65 years and older were surveyed in the 2015-2019 National Survey on Drug Use and Health. We estimated trends in prevalence of past-month binge drinking (≥5 drinks on the same occasion for men and ≥4 drinks for women), stratified by sex. Correlates of binge drinking were estimated for men and women separately, focusing on demographic characteristics, chronic diseases, past-month tobacco and cannabis use, depression, and emergency department use. Multivariable generalized linear models using Poisson and log link were used to examine associations stratified by sex.

                Results

                Binge drinking among older men increased from 12.8% in 2015 to 15.7% in 2019 (p = 0.02) but remained stable among older women (7.6% to 7.3%, p = 0.97). In adjusted models, having a college degree was associated with higher risk of binge drinking among women (adjusted prevalence ratio [aPR] = 1.68, 95% CI: 1.13-2.50), but lower risk among men (aPR = 0.69, 95% CI: 0.56-0.85). Men who are separated or divorced were also at higher risk (aPR = 1.25, 95% CI: 1.05-1.50), but women were not. Both men and women reporting past-month use of tobacco (men aPR = 1.87, 95% CI: 1.61-2.17, women aPR = 2.11, 95% CI: 1.71-2.60) and cannabis (men aPR = 2.05, 95% CI: 1.63-2.58, women aPR = 2.77, 95% CI 2.00-3.85) were at higher risk of binge drinking.

                Conclusions

                Binge drinking has increased among older men whereas it has remained stable among older women in the United States. Interventions should consider that although tobacco and cannabis use is associated with an increased risk of binge drinking among both older men and women, demographic correlates tend to differ by sex.
                  Cover page: Trends in binge drinking prevalence among older U.S. men and women, 2015 to 2019
                  • Article
                  • Peer Reviewed
                  UC San Diego Previously Published Works (2023)
                  The aging United States population, which includes the large Baby Boomer generation, is leading to an increasing number of middle-aged and older adults who engage in psychoactive substance use. Due to the size of this cohort, and their changing attitudes around psychoactive substance use, there has been a sharp increase in prevalence of past-month cannabis use among adults aged ≥50; however, little is understood about recent trends in the use of both cannabis and excess alcohol use, such as binge drinking, in this population. The current use of both alcohol and cannabis has important health implications for older adults, given their higher prevalence of chronic diseases and prescribed medications. This study aimed to 1) estimate national trends among older adults who report both past-month binge drinking and cannabis use, and 2) examine correlates of reporting both. We examined aggregated data from a nationally representative sample of noninstitutionalized adults aged ≥50 from the 2015 to 2019 National Survey on Drug Use and Health. During the study period, there was an estimated 2.5% increase (a 64.1% relative increase) in past-month cannabis use (linear trend p < 0.001), a non-significant decrease in past-month binge drinking, and a 0.5% estimated increase in both past-month cannabis use and binge drinking (a 26.3% relative increase) (p = 0.03). The sharpest increase in both past-month cannabis use and binge drinking was among adults aged ≥65, with the estimated prevalence increasing from 0.2% in 2015 to 1.1% in 2019 (a 450% relative increase, p < 0.001). Those engaging in past-month binge drinking and cannabis use were more likely to be younger, male, non-Hispanic Black, use tobacco, and report past-year mental health treatment. Results suggest that the prevalence of both past-month cannabis use and binge drinking among middle-aged and older adults increased between 2015 and 2019, especially among adults aged ≥65, which indicates an increased need to screen for both excess alcohol and cannabis use to minimize potential harm.
                    Cover page: Past-month binge drinking and cannabis use among middle-aged and older adults in the United States, 2015–2019
                    • Article
                    • Peer Reviewed
                    UC San Diego Previously Published Works (2018)
                    Adults with medical multimorbidity (≥2 chronic conditions) present challenges for health care systems to provide coordinated care. Substance use can complicate the management of chronic medical conditions, but little research has focused on the intersection of medical multimorbidity and substance use. This study uses cross-sectional analysis of 115,335 adult respondents of the 2012-2014 administrations of the National Survey on Drug Use and Health to estimate the prevalence and correlates of past-year drug use among adults with multimorbidity. The prevalence of past-year drug use was compared between individuals reporting 0, 1, and ≥2 chronic medical conditions. We used multivariable logistic regression to determine correlates of past-year drug use among adults with ≥2 chronic medical conditions. 53.1% reported no chronic conditions, 29.5% reported one chronic condition, and 17.4% reported ≥2 chronic conditions. Past-year drug use was reported by 18.3% of those with no chronic conditions, 14.8% with 1 chronic condition, and 11.6% with ≥2 chronic conditions. Cannabis and opioid analgesics (nonmedical use) were the most common drugs used across all three groups. In the adjusted model, among adults with medical multimorbidity, adults with past-year drug use were more likely to be younger, male, have lower income, and report current tobacco use, alcohol dependence, past-year depression, and having received mental health treatment in the past year. In this national cohort, fewer adults with multimorbidity reported substance use compared to adults with no or one chronic condition, however, this population with high multimorbidity may be particularly vulnerable to the negative effects of drug use.
                      Cover page: Medical multimorbidity and drug use among adults in the United States.
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