Marja Leonhardt
- Researcher; PhD
Research interests:
Leonhardts research interests include intervention studies and mixed-methods research related to persons with concurrent substance use and mental health disorders. She is currently doing qualitative work on heroin-assisted treatment.
Projects
Heroinassistert behandling - Oslo universitetssykehus HF (oslo-universitetssykehus.no)
Publications
Marja LEONHARDT | Doctor of medical science (Dr. rer. medic.) | Innlandet Hospital Trust, Brumunddal | Research profile (researchgate.net)
Person #795697 - Marja Leonhardt - Cristin (cristin.no)
Publications 2024
Health assessments of refugee minors arriving in Norway - a modified Delphi study among health professionals in primary care settings
BMC Public Health, 24 (1), 2487
DOI 10.1186/s12889-024-19871-2, PubMed 39267001
Frequency and patterns of substance-induced psychosis in persons with concurrent mental health and substance use disorders during the COVID-19 pandemic: A Norwegian register-based cohort study
Eur Psychiatry, 67 (1), e82
DOI 10.1192/j.eurpsy.2024.1797, PubMed 39676544
Correction: Time trends in self-reported depressive symptoms, prescription of antidepressants, sedatives and hypnotics and the emergence of social media among Norwegian adolescents
PLoS One, 19 (7), e0306972
DOI 10.1371/journal.pone.0306972, PubMed 38968263
Use of contraception during first sexual intercourse among Norwegian adolescents: a national cross-sectional study
BMC Public Health, 24 (1), 1521
DOI 10.1186/s12889-024-19009-4, PubMed 38844901
Are social pressure, bullying and low social support associated with depressive symptoms, self-harm and self-directed violence among adolescents? A cross-sectional study using a structural equation modeling approach
BMC Psychiatry, 24 (1), 239
DOI 10.1186/s12888-024-05696-1, PubMed 38553669
Publications 2023
Negative social media-related experiences and lower general self-efficacy are associated with depressive symptoms in adolescents
Front Public Health, 10, 1037375
DOI 10.3389/fpubh.2022.1037375, PubMed 36684882
Education and Training in Addiction Medicine and Psychology across Europe: A EUFAS Survey
Eur Addict Res, 30 (3), 127-137
DOI 10.1159/000531502, PubMed 37557089
Incidence of SARS-CoV-2 and all-cause mortality in persons with co-occurring substance use disorder and mental illness during the pandemic: a Norwegian cohort study
Soc Psychiatry Psychiatr Epidemiol, 59 (8), 1379-1387
DOI 10.1007/s00127-023-02599-6, PubMed 38015236
Time trends in self-reported depressive symptoms, prescription of antidepressants, sedatives and hypnotics and the emergence of social media among Norwegian adolescents
PLoS One, 18 (12), e0295384
DOI 10.1371/journal.pone.0295384, PubMed 38150420
Promoting Social Participation and Recovery Using Virtual Reality-Based Interventions Among People With Mental Health and Substance Use Disorders: Qualitative Study
JMIR Form Res, 7, e46136
DOI 10.2196/46136, PubMed 37104000
Publications 2022
Sleep and energy drink consumption among Norwegian adolescents - a cross-sectional study
BMC Public Health, 22 (1), 534
DOI 10.1186/s12889-022-12972-w, PubMed 35303832
How did the first COVID-19 lockdown affect persons with concurrent mental health and substance use disorders in Norway? A qualitative study
BMC Psychiatry, 22 (1), 179
DOI 10.1186/s12888-022-03812-7, PubMed 35287637
Associations between Mental Health, Lifestyle Factors and Worries about Climate Change in Norwegian Adolescents
Int J Environ Res Public Health, 19 (19)
DOI 10.3390/ijerph191912826, PubMed 36232127
Physical comorbidity among patients attending mental health services at Windhoek Central Hospital, Namibia
Pan Afr Med J, 41, 270
DOI 10.11604/pamj.2022.41.270.27134, PubMed 35734337
Risk factors for cardiovascular disease among people with mental illness in Namibia
Ghana Med J, 56 (4), 285-294
DOI 10.4314/gmj.v56i4.7, PubMed 37575634
Association between cannabis use and physical health problems in Norwegian adolescents: a cross-sectional study from the youth survey Ungdata
BMC Public Health, 22 (1), 661
DOI 10.1186/s12889-022-13136-6, PubMed 35382834
Therapists and the Topic of Meaning in Life in Their Encounters With Adolescents With Developmental Trauma: A Qualitative Study
Front Psychiatry, 13, 835491
DOI 10.3389/fpsyt.2022.835491, PubMed 35250675
Is There an Association between Intra-Operative Detection of Pathogens in Subcutaneous Tissue and Surgical Site Infections? Results from a Prospective Study
Surg Infect (Larchmt), 23 (4), 372-379
DOI 10.1089/sur.2021.154, PubMed 35263172
Publications 2021
The relationship between religiosity/spirituality and quality of life among female Eritrean refugees living in Norwegian asylum centres
Int J Soc Psychiatry, 68 (4), 881-890
DOI 10.1177/00207640211010207, PubMed 33876654
Are There Differences in Video Gaming and Use of Social Media among Boys and Girls?-A Mixed Methods Approach
Int J Environ Res Public Health, 18 (11)
DOI 10.3390/ijerph18116085, PubMed 34200039
The impact of surgical site infection-a cost analysis
Langenbecks Arch Surg, 407 (2), 819-828
DOI 10.1007/s00423-021-02346-y, PubMed 34651239
Publications 2020
Comparison of European Clinical Guidelines on the Management of Alcohol Use Disorders
Eur Addict Res, 27 (3), 227-236
DOI 10.1159/000512112, PubMed 33291106
Validation of the German Classification of Diverticular Disease (VADIS)-a prospective bicentric observational study
Int J Colorectal Dis, 36 (1), 103-115
DOI 10.1007/s00384-020-03721-9, PubMed 32886196
Reduction of Postoperative Wound Infections by Antiseptica (RECIPE)?: A Randomized Controlled Trial
Ann Surg, 272 (1), 55-64
DOI 10.1097/SLA.0000000000003645, PubMed 31599810
Publications 2019
Sources of Support and Information During Disease: An Exploratory Study, Comparing Migrant and Nonmigrant Colorectal Cancer Patients in Germany
J Transcult Nurs, 31 (4), 387-396
DOI 10.1177/1043659619875197, PubMed 31516067
Does migrant background predict to what extent colorectal cancer patients want to be informed about their life expectancy? - a cross-sectional analysis
Int J Equity Health, 18 (1), 192
DOI 10.1186/s12939-019-1105-0, PubMed 31805943
Publications 2018
Exploring the characteristics and potential disparities of non-migrant and migrant colorectal cancer patients regarding their satisfaction and subjective perception of care - a cross-sectional study
BMC Health Serv Res, 18 (1), 423
DOI 10.1186/s12913-018-3232-5, PubMed 29879958
Publications 2014
Cross-cultural adaptation of the delphi definitions of low back pain prevalence (German DOLBaPP)
BMC Musculoskelet Disord, 15, 397
DOI 10.1186/1471-2474-15-397, PubMed 25425047