CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profile
Purpose CANN2021 is a nationwide cohort of Norwegian high school students created with the aim of addressing emerging issues in epidemiology of cannabis use through the initial surveillance and examination of its correlates, causes and consequences.Participants Between 25 February 2021 and 10 April...
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| Language: | English |
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BMJ Publishing Group
2025-07-01
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| Series: | BMJ Open |
| Online Access: | https://bmjopen.bmj.com/content/15/7/e092475.full |
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| author | Jasmina Burdzovic Andreas Anne Line Bretteville-Jensen |
| author_facet | Jasmina Burdzovic Andreas Anne Line Bretteville-Jensen |
| author_sort | Jasmina Burdzovic Andreas |
| collection | DOAJ |
| description | Purpose CANN2021 is a nationwide cohort of Norwegian high school students created with the aim of addressing emerging issues in epidemiology of cannabis use through the initial surveillance and examination of its correlates, causes and consequences.Participants Between 25 February 2021 and 10 April 2021, a core baseline sample of 3490 students (48% boys; 11th grade 35.5%, 12th grade 31.2%, 13th grade 33.3%) from 34 high schools in Norway anonymously completed comprehensive e-surveys assessing their cannabis-related involvement and experiences. A total of 1510 (43.3%) participants (45.8% boys; 11th grade 28.9%, 12th grade 31.1%, 13th grade 40.0%) provided identifying information and consented to administrative contact entailing individual-level linkages of their survey responses to their health and census data as recorded in various national registries since 2010, thus establishing the CANN2021 registry-linkages cohort.Findings to date The core baseline sample (N=3490) was largely representative of the Norwegian high school youth between the ages of 17 and 19 years, and as such of relevance to national surveillance needs. One in five (20.3%) reported having used cannabis at least once during their lifetime; of these, 40.9% consented to registry linkages.Future plans E-survey data from the registry cohort will be linked at the individual level to health and administrative registries such as the Norwegian Patient Registry, Education, Crime, Income and Population Registry in 2025, 2029 and 2031. The retrospective and prospective linkages of baseline e-surveys with registry data can thus be used to address a range of epidemiological and public health questions, including examination of temporal associations between various types of early cannabis involvement and putative risk and protective factors, and subsequent health and social outcomes. |
| format | Article |
| id | doaj-art-02967e1710304182b75e2d56bfbd0416 |
| institution | DOAJ |
| issn | 2044-6055 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | BMJ Publishing Group |
| record_format | Article |
| series | BMJ Open |
| spelling | doaj-art-02967e1710304182b75e2d56bfbd04162025-08-20T02:50:19ZengBMJ Publishing GroupBMJ Open2044-60552025-07-0115710.1136/bmjopen-2024-092475CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profileJasmina Burdzovic Andreas0Anne Line Bretteville-Jensen1Department of Alcohol, Tobacco, and Drugs, Norwegian Institute of Public Health, Oslo, NorwayDepartment of Alcohol, Tobacco, and Drugs, Norwegian Institute of Public Health, Oslo, NorwayPurpose CANN2021 is a nationwide cohort of Norwegian high school students created with the aim of addressing emerging issues in epidemiology of cannabis use through the initial surveillance and examination of its correlates, causes and consequences.Participants Between 25 February 2021 and 10 April 2021, a core baseline sample of 3490 students (48% boys; 11th grade 35.5%, 12th grade 31.2%, 13th grade 33.3%) from 34 high schools in Norway anonymously completed comprehensive e-surveys assessing their cannabis-related involvement and experiences. A total of 1510 (43.3%) participants (45.8% boys; 11th grade 28.9%, 12th grade 31.1%, 13th grade 40.0%) provided identifying information and consented to administrative contact entailing individual-level linkages of their survey responses to their health and census data as recorded in various national registries since 2010, thus establishing the CANN2021 registry-linkages cohort.Findings to date The core baseline sample (N=3490) was largely representative of the Norwegian high school youth between the ages of 17 and 19 years, and as such of relevance to national surveillance needs. One in five (20.3%) reported having used cannabis at least once during their lifetime; of these, 40.9% consented to registry linkages.Future plans E-survey data from the registry cohort will be linked at the individual level to health and administrative registries such as the Norwegian Patient Registry, Education, Crime, Income and Population Registry in 2025, 2029 and 2031. The retrospective and prospective linkages of baseline e-surveys with registry data can thus be used to address a range of epidemiological and public health questions, including examination of temporal associations between various types of early cannabis involvement and putative risk and protective factors, and subsequent health and social outcomes.https://bmjopen.bmj.com/content/15/7/e092475.full |
| spellingShingle | Jasmina Burdzovic Andreas Anne Line Bretteville-Jensen CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profile BMJ Open |
| title | CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profile |
| title_full | CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profile |
| title_fullStr | CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profile |
| title_full_unstemmed | CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profile |
| title_short | CANN2021 survey and registry-linkages cohort on cannabis involvement among Norwegian high school students: design, measures and sample characteristics – cohort profile |
| title_sort | cann2021 survey and registry linkages cohort on cannabis involvement among norwegian high school students design measures and sample characteristics cohort profile |
| url | https://bmjopen.bmj.com/content/15/7/e092475.full |
| work_keys_str_mv | AT jasminaburdzovicandreas cann2021surveyandregistrylinkagescohortoncannabisinvolvementamongnorwegianhighschoolstudentsdesignmeasuresandsamplecharacteristicscohortprofile AT annelinebrettevillejensen cann2021surveyandregistrylinkagescohortoncannabisinvolvementamongnorwegianhighschoolstudentsdesignmeasuresandsamplecharacteristicscohortprofile |