Developmental timing of first drug treatment and 10-year patterns of drug use

Evans, Elizabeth; Li, Libo; Grella, Christine E.; Brecht, Mary‐Lynn; Hser, Yih‐Ing

doi:10.1016/j.jsat.2012.07.012

Cited by 21 publications

(19 citation statements)

References 83 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A longitudinal study (Dennis, et al, 2005) of a large heterogeneous sample in a public treatment system found that age of first substance use, age of treatment entry and duration between the two were all independently associated with substance use and treatment careers. In the Evans et al study, a starting point for the current study, individuals first treated as young adults had higher drug use and incarceration rates over the 10-year follow-up compared with a matched sample of individuals first treated as older adults (Evans, et al, 2013). Although rates of continuing care were low among both age cohorts, receipt of more drug treatment was associated with lower levels of use among those first treated as young adults, but not among the older adults.…”

Section: Discussionmentioning

confidence: 82%

“…Evans and colleagues (Evans, Li, Grella, Brecht, & Hser, 2013) examined the developmental timing of first drug treatment and its association with longitudinal drug use patterns. Using pooled data from four longitudinal studies (N=1318), the authors created a sample of individuals first treated either during young adulthood (26%) or at an older age, matched on demographics, primary drug type, age at first use of primary drug and age at first arrest.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Does age at first treatment episode make a difference in outcomes over 11 years?

Felicia¹,

Weisner²,

Grella³

et al. 2014

Journal of Substance Abuse Treatment

Self Cite

View full text Add to dashboard Cite

This study examines the associations between age at first substance use treatment entry and trajectory of outcomes over 11 years. We found significant differences in individual and treatment characteristics between adult intakes first treated during young adulthood (25 years or younger) and those first treated at an older age. Compared to their first treated older age counterparts matched on demographics and dependence type, those who entered first treatment during young adulthood had on average an earlier onset for substance use but a shorter duration between first substance use and first treatment entry; they also had worse alcohol and other drug outcomes 11 years post treatment entry. While subsequent substance use treatment and 12-step meeting attendance are important for both age groups in maintaining positive outcomes, relationships varied by age group. Findings underline the importance of different continuing care management strategies for those entering first treatment at different developmental stages.

show abstract

Section: Discussionmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Does age at first treatment episode make a difference in outcomes over 11 years?

Felicia¹,

Weisner²,

Grella³

et al. 2014

Journal of Substance Abuse Treatment

Self Cite

View full text Add to dashboard Cite

show abstract

“…All studies were conducted in California. Following our prior work with this sample (Brecht et al, 2008; Evans et al, 2013; Hser et al, 2008a, 2008b), we selected from each study those subjects who reported a primary drug problem of heroin, cocaine, or methamphetamine use. Projects included: (1) 33-year heroin follow-up study (Hser et al, 2001); cocaine treatment evaluation (Hser et al, 2006), methamphetamine natural history study (Brecht et al, 2004), treatment process study (Hser et al, 2004), and treatment utilization and effectiveness study (Hser et al, 2003).…”

Section: Methodsmentioning

confidence: 99%

“…Informed by the literature on the cumulative effect of drug treatment on drug use patterns (Evans et al, 2013; Hser et al, 2006; Li et al, 2010; Scott et al, 2005), two additional covariates of interest were constructed. First, indicator variables for 1 st to ≥5 th episode attempts were derived following construction of the repeated-measures dataset.…”

Section: Methodsmentioning

confidence: 99%

Characterizing longitudinal health state transitions among heroin, cocaine, and methamphetamine users

Nosyk

Evans

et al. 2014

Drug and Alcohol Dependence

View full text Add to dashboard Cite

Aims Characterize longitudinal patterns of drug use careers and identify determinants of drug use frequency across cohorts of primary heroin, methamphetamine (MA) and cocaine users. Design Pooled analysis of prospective cohort studies. Settings Illicit drug users recruited from community, criminal justice and drug treatment settings in California, USA. Participants We used longitudinal data on from five observational cohort studies featuring primary users of heroin (N=629), cocaine (N=694) and methamphetamine (N=474). The mean duration of follow-up was 20.9 years. Measurements Monthly longitudinal data was arranged according to five health states (incarceration, drug treatment, abstinence, non-daily and daily use). We fitted proportional hazards (PH) frailty models to determine independent differences in successive episode durations. We then executed multi-state Markov (MSM) models to estimate probabilities of transitioning between health states, and the determinants of these transitions. Findings Across primary drug use types, PH frailty models demonstrated durations of daily use diminished in successive episodes over time. MSM models revealed primary stimulant users had more erratic longitudinal patterns of drug use, transitioning more rapidly between periods of treatment, abstinence, non-daily and daily use. MA users exhibited relatively longer durations of high-frequency use. Criminal engagement had a destabilizing effect on health state durations across drug types. Longer incarceration histories were associated with delayed transitions towards cessation. Conclusions PH frailty and MSM modeling techniques provided complementary information on longitudinal patterns of drug abuse. This information can inform clinical practice and policy, and otherwise be used in health economic simulation models, designed to inform resource allocation decisions.

show abstract

“…Although the question of access to substance abuse treatment is central, it is also important to look at the specific characteristics of the youngest users (Bukstein et al, 2005;Evans et al, 2013;Gulliver et al, 2010;Hoeppner et al, 2014;Parthasarathy & Weisner, 2005;Priester et al, 2016;SchumanOlivier et al, 2014;Smith et al, 2011;Sterling et al, 2010). While older individuals may have more experience with services, fruitful or not, young users are often still unfamiliar with these settings; they can then express specific needs which, if they are met, will influence their treatment access experiences.…”

Section: Discussionmentioning

confidence: 99%

Initiation of addiction treatment and access to services: Young adults' accounts of their help-seeking experiences

Wagner¹,

Bertrand²,

Flores-Aranda³

et al. 2018

Preprint

View full text Add to dashboard Cite

Substance addiction in young adults is particularly problematic. Yet, much remain at stake in understanding the specifics of this population's access to services. The objective of this study is to explore young adults' initiation of substance abuse treatment. Our study sample was composed of 35 individuals aged 18 to 30 with problematic psychoactive substance use who have been identified in criminal courts, hospital emergency departments and Health and Social Services Centers in Quebec (Canada). A thematic analysis was performed on the 62 semi-structured interviews conducted with participants. Three components emerged. First, personal elementsexpectations, individual motivations, perceptions of use and capacity to control itinfluence initiation of substance abuse treatment. Second, family and peers have noticeable influences. Finally, system characteristics and prior care experiences also shape the process. Consideration should be given to tailor interventions that can reach young adults and encourage them to initiate appropriate care.

show abstract

Developmental timing of first drug treatment and 10-year patterns of drug use

Cited by 21 publications

References 83 publications

Does age at first treatment episode make a difference in outcomes over 11 years?

Does age at first treatment episode make a difference in outcomes over 11 years?

Characterizing longitudinal health state transitions among heroin, cocaine, and methamphetamine users

Initiation of addiction treatment and access to services: Young adults' accounts of their help-seeking experiences

Contact Info

Product

Resources

About