School- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schools
Aim: Strong associations have been found between being exposed to self-harm in family and friends and own self-harm in adolescence. Therefore, self-harm and suicide behaviour might tend to cluster within school and school classes. The aim of this study was to describe the prevalence, frequency and t...
| Main Authors: | , , |
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| Format: | Journal article |
| Language: | English |
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SAGE Publications
2018
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| _version_ | 1826288497528406016 |
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| author | Pisinger, V Hawton, K Tolstrup, J |
| author_facet | Pisinger, V Hawton, K Tolstrup, J |
| author_sort | Pisinger, V |
| collection | OXFORD |
| description | Aim: Strong associations have been found between being exposed to self-harm in family and friends and own self-harm in adolescence. Therefore, self-harm and suicide behaviour might tend to cluster within school and school classes. The aim of this study was to describe the prevalence, frequency and type of self-harm, suicide ideation and suicide attempts within Danish high schools and to test whether self-harm and suicide behaviour cluster in schools and school classes. Methods: Data came from the Danish National Youth Study 2014, a national survey. The respective study included 66,284 high-school students nested in 117 schools and 3146 school classes. The prevalence and clustering of self-harm behaviour, ever and within the last year, type of self-harm (e.g. cutting, burning, scratching and hitting) and suicide ideation and suicide attempts were investigated. Multi-level logistic regression was applied to quantify clustering among participants within the same class and school. Results: In total, 12,960 (20%) reported self-harm ever and 5706 (8.6%) within the last year. Prevalence was higher among girls than boys. Among girls, cutting (15%) and scratching (13%) was the most common type of self-harm, whereas among boys, hitting (6.7%) was most prevalent. The degree of clustering of self-harm and suicide behaviour was low, with school-level intra-class correlation coefficients (ICC) ranging from 0.8–1.8% and school class level ICC’s from 4.3–6.8%. Conclusions: This study shows that self-harm was common, especially in girls. The degree of clustering of self-harm and suicide behaviour in school and school classes was low. |
| first_indexed | 2024-03-07T02:14:36Z |
| format | Journal article |
| id | oxford-uuid:a1cd209b-3fc4-475c-a506-6c6dbbee1bf7 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T02:14:36Z |
| publishDate | 2018 |
| publisher | SAGE Publications |
| record_format | dspace |
| spelling | oxford-uuid:a1cd209b-3fc4-475c-a506-6c6dbbee1bf72022-03-27T02:15:46ZSchool- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schoolsJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:a1cd209b-3fc4-475c-a506-6c6dbbee1bf7EnglishSymplectic Elements at OxfordSAGE Publications2018Pisinger, VHawton, KTolstrup, JAim: Strong associations have been found between being exposed to self-harm in family and friends and own self-harm in adolescence. Therefore, self-harm and suicide behaviour might tend to cluster within school and school classes. The aim of this study was to describe the prevalence, frequency and type of self-harm, suicide ideation and suicide attempts within Danish high schools and to test whether self-harm and suicide behaviour cluster in schools and school classes. Methods: Data came from the Danish National Youth Study 2014, a national survey. The respective study included 66,284 high-school students nested in 117 schools and 3146 school classes. The prevalence and clustering of self-harm behaviour, ever and within the last year, type of self-harm (e.g. cutting, burning, scratching and hitting) and suicide ideation and suicide attempts were investigated. Multi-level logistic regression was applied to quantify clustering among participants within the same class and school. Results: In total, 12,960 (20%) reported self-harm ever and 5706 (8.6%) within the last year. Prevalence was higher among girls than boys. Among girls, cutting (15%) and scratching (13%) was the most common type of self-harm, whereas among boys, hitting (6.7%) was most prevalent. The degree of clustering of self-harm and suicide behaviour was low, with school-level intra-class correlation coefficients (ICC) ranging from 0.8–1.8% and school class level ICC’s from 4.3–6.8%. Conclusions: This study shows that self-harm was common, especially in girls. The degree of clustering of self-harm and suicide behaviour in school and school classes was low. |
| spellingShingle | Pisinger, V Hawton, K Tolstrup, J School- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schools |
| title | School- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schools |
| title_full | School- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schools |
| title_fullStr | School- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schools |
| title_full_unstemmed | School- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schools |
| title_short | School- and class-level variation in self-harm, suicide ideation and suicide attempts in Danish high schools |
| title_sort | school and class level variation in self harm suicide ideation and suicide attempts in danish high schools |
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