| Title |
Marijuana use from adolescence to adulthood: developmental trajectories and their outcomes
|
|---|---|
| Published in |
Social Psychiatry and Psychiatric Epidemiology, May 2016
|
| DOI | 10.1007/s00127-016-1229-0 |
| Pubmed ID | |
| Authors |
Judith S. Brook, Chenshu Zhang, Carl G. Leukefeld, David W. Brook |
| Abstract |
The study assesses the degree to which individuals in different trajectories of marijuana use are similar or different in terms of unconventional behavior, sensation seeking, emotional dysregulation, nicotine dependence, alcohol dependence/abuse, children living at home, and spouse/partner marijuana use at age 43. This study used a longitudinal design. The sample participants (N = 548) were first studied at mean age 14 and last studied at mean age 43. Six trajectories of marijuana use were identified: chronic/heavy users (3.6 %), increasing users (5.1 %), chronic/occasional users (20 %), decreasers (14.3 %), quitters (22.5 %), and nonusers/experimenters (34.5 %). With three exceptions, as compared with being a nonuser/experimenter, a higher probability of belonging to the chronic/heavy, the increasing, or the chronic/occasional user trajectory group was significantly associated with a greater likelihood of unconventional behavior, sensation seeking, emotional dysregulation, nicotine dependence, alcohol dependence/abuse, not having children who lived at home, and having a spouse/partner who used marijuana at early midlife. In addition, compared with being a quitter, a higher probability of belonging to the chronic/heavy user trajectory group was significantly associated with a higher likelihood of unconventional behavior, sensation seeking, emotional dysregulation, alcohol dependence/abuse, and spouse/partner marijuana use. Implications for intervention are presented. Trajectories of marijuana use, especially chronic/heavy use, increasing use, and chronic/occasional use, are associated with unconventional behavior, sensation seeking, emotional dysregulation, nicotine dependence, alcohol dependence/abuse, having children who lived at home, and spouse/partner marijuana use at age 43. The importance of the findings for prevention and treatment programs are discussed. |
X Demographics
The data shown below were collected from the profiles of 6 X users who shared this research output. Click here to find out more about how the information was compiled.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United States | 3 | 50% |
| Canada | 1 | 17% |
| Unknown | 2 | 33% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 6 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 106 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Unknown | 106 | 100% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Researcher | 14 | 13% |
| Student > Master | 13 | 12% |
| Student > Bachelor | 10 | 9% |
| Student > Doctoral Student | 10 | 9% |
| Other | 7 | 7% |
| Other | 19 | 18% |
| Unknown | 33 | 31% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 26 | 25% |
| Social Sciences | 11 | 10% |
| Medicine and Dentistry | 9 | 8% |
| Nursing and Health Professions | 7 | 7% |
| Neuroscience | 4 | 4% |
| Other | 13 | 12% |
| Unknown | 36 | 34% |
Attention Score in Context
This research output has an Altmetric Attention Score of 3. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 25 October 2016.
All research outputs
#13,946,913
of 24,843,842 outputs
Outputs from Social Psychiatry and Psychiatric Epidemiology
#1,840
of 2,675 outputs
Outputs of similar age
#147,858
of 315,740 outputs
Outputs of similar age from Social Psychiatry and Psychiatric Epidemiology
#26
of 41 outputs
Altmetric has tracked 24,843,842 research outputs across all sources so far. This one is in the 43rd percentile – i.e., 43% of other outputs scored the same or lower than it.
So far Altmetric has tracked 2,675 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 14.6. This one is in the 30th percentile – i.e., 30% of its peers scored the same or lower than it.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 315,740 tracked outputs that were published within six weeks on either side of this one in any source. This one has gotten more attention than average, scoring higher than 52% of its contemporaries.
We're also able to compare this research output to 41 others from the same source and published within six weeks on either side of this one. This one is in the 36th percentile – i.e., 36% of its contemporaries scored the same or lower than it.