| Not Yet Recruiting | Enabling Environments for Non-communicable Disease Risk Reduction in Ethiopia Non-communicable Diseases (NCD) | N/A | 2026-02-10 |
| Not Yet Recruiting | PERsonalized Mammographic Screening in Norway Breast Cancer, Mammographic Breast Density, Risk Stratification | — | 2026-01-01 |
| Enrolling By Invitation | Classroom Air Purifiers for Reducing School Absence Asenteeism | N/A | 2026-01-01 |
| Not Yet Recruiting | Targeting Lifestyle to Improve Colorectal Cancer Screening Lifestyle Alteration, Tobacco, Diet Modification | N/A | 2025-10-15 |
| Not Yet Recruiting | Effectiveness of SMS Nudging to Increase Coverage of Influenza Vaccination Among the Elderly Influenza | N/A | 2025-10-01 |
| Completed | The Effect on Attendance of an SMS Notification Prior to a Scheduled Screening Appointment in BreastScreen Nor Attendance, Breast Cancer Screening | N/A | 2025-01-10 |
| Recruiting | Artificial Intelligence in Mammography Screening in Norway Breast Cancer | N/A | 2024-11-25 |
| Completed | ImmigrantScreen Telephone Reminder Trial in Colorectal Cancer Screening Cancer Colorectal | N/A | 2024-05-15 |
| Unknown | Air Purifiers in Classrooms for Infection Control - a Pilot Study Feasibility, Acceptability | N/A | 2024-01-15 |
| Completed | Long-term Consequences of Cyclist Injuries Injuries, Cycling Accident | — | 2023-06-26 |
| Unknown | Evaluation of the National Tool for Observation of Infection Prevention Measures in the Healthcare (NOST) Infections, Respiratory, Healthcare Worker Patient Transmission | N/A | 2023-02-20 |
| Completed | The Protective Effect of Mask Wearing Against Respiratory Tract Infections COVID-19, Respiratory Tract Infections | N/A | 2023-02-10 |
| Completed | Diagnostic Survey of Mental and Substance Use Disorders Among Norwegian College and University Students Mental Disorders, Substance Use Disorders, Treatment | — | 2023-01-24 |
| Withdrawn | Trial of 2nd Booster Dose of COVID-19 Vaccine COVID-19 | N/A | 2022-10-01 |
| Unknown | The Effect of Working at Home to Reduce Risk of Respiratory Infection Respiratory Tract Infections, COVID-19 | N/A | 2022-03-14 |
| Completed | Conversation With Family Doctor to Increase COVID-19 Vaccine Uptake COVID-19 | N/A | 2021-12-03 |
| Active Not Recruiting | Guided Internet-based Interventions in Primary Care Effectiveness-implementation Randomized Controlled Trial Anxiety, Mild to Moderate Depression | N/A | 2021-10-20 |
| Completed | Evaluation of a Rapid Point-of-Care Serological Triage Test for Active TB Tuberculosis, Pulmonary | N/A | 2021-09-21 |
| Completed | COVID-19: The Effectiveness of Free Face Mask Distribution Covid19 | N/A | 2021-05-03 |
| Withdrawn | Antigen Rapid Test Screening to Prevent SARS-CoV-2 Transmission (COVID-19) at Mass Gathering Events. Covid19 | N/A | 2021-05-01 |
| Completed | Glasses Against Transmission of SARS-CoV-2 (COVID-19) in the Community COVID-19, Respiratory Tract Infections | N/A | 2021-02-02 |
| Recruiting | Coping After Breast Cancer - a Randomized Clinical Trial With Two Digital Interventions Breast Cancer Patients, Health, Subjective | N/A | 2021-01-15 |
| Unknown | Health Promoting Work Schedules: The Effect of Abolishing Quick Returns Sick Leave, Insomnia, Shift-Work Sleep Disorder | N/A | 2021-01-01 |
| Recruiting | Effects of the 5 Ways to Wellbeing Course Effects of the 5 Ways to Wellbeing Course Wellbeing, Quality of Life, Mental Health Wellness 1 | N/A | 2020-02-01 |
| Completed | Long-term Effects of Breast Cancer Treatment Breast Cancer | — | 2019-11-23 |
| Completed | Diagnostic Survey of Mental and Substance Use Disorders in HUNT (PsykHUNT) Mental Disorders, Substance Use Disorders, Treatment | — | 2018-11-02 |
| Completed | Mind Power - A CBT Based Program for Adolescents Mental Depression, Mental Stress, Mental Health Wellness 1 | N/A | 2018-09-01 |
| Completed | Under- and Overdiagnosis in BreastScreen Norway Breast Cancer | — | 2018-07-01 |
| Completed | The Tomosynthesis Trial in Bergen - Part 2 Breast Neoplasms | N/A | 2018-01-01 |
| Completed | Effectiveness Trial to Evaluate Protection of Pregnant Women by Hepatitis E Vaccine in Bangladesh. Hepatitis E Infection | Phase 4 | 2017-10-02 |
| Unknown | Smoking Cessation in Cancer Treatment Smoking Cessation, Motivation | N/A | 2017-09-15 |
| Completed | Promoting Asylum-seeking and Refugee Children's Coping With Trauma Mental Health Disorder, Post-Traumatic Stress Disorder in Adolescence, Depression | N/A | 2017-06-20 |
| Completed | "Get up" - The Sleep Study in Oppegard Sleep Initiation and Maintenance Disorders | N/A | 2017-04-24 |
| Unknown | Quality of Life and Shared Decision Making in Prostate Cancer Prostate Cancer | — | 2017-01-01 |
| Completed | Effect Evaluation of The International Child Development Programme (ICDP) Parenting, Parent-Child Relations, Child Development | N/A | 2016-02-10 |
| Unknown | Overcoming Insomnia: Impact on Sleep, Health and Work of Online CBT-I Insomnia | N/A | 2016-02-01 |
| Completed | The Digital Breast Tomosynthesis Trial in Bergen Breast Neoplasms | N/A | 2016-01-01 |
| Completed | Training General Practitioners in Bulgaria to Reduce Suicide Rate Suicide | N/A | 2016-01-01 |
| Completed | Trial of Prompt Mental Health Care Anxiety, Mild to Moderate Depression | N/A | 2015-11-09 |
| Completed | Internet-based Treatment for Insomnia Psychophysiologic Insomnia | N/A | 2013-11-01 |
| Unknown | A Naturalistic Controlled Trial of Individual Placement and Control in Bodø Severe Mental Disorder | N/A | 2013-01-01 |
| Active Not Recruiting | Pilot Study of a National Screening Programme for Bowel Cancer in Norway Colorectal Cancer, Colorectal Adenomas | N/A | 2012-03-01 |
| Unknown | Does the New Fall- and Fracture Prevention Initiative in Oslo Have Effect? Fall Injury, Hip Fractures | — | 2012-01-01 |
| Completed | Effects of Fetal Movement Counting in Third Trimester of Pregnancy Decreased Fetal Movements, Unspecified Trimester, Other Fetus, Worries, Pregnancy | N/A | 2007-08-01 |
| Completed | Immunogenicity and Safety Study of a Booster Dose (5th) of Diphteria-Tetanus-Pertussis-Polio Vaccine Diphtheria, Tetanus, Pertussis | Phase 4 | 2007-04-01 |
| Completed | Home Sampling Versus Conventional Sampling for Screening of Urogenital Chlamydia Trachomatis in Young Men and Chlamydia Trachomatis, Mass Screening | N/A | 2006-02-01 |
| Completed | Prevention of Hip Fractures With Soft and Hard Hip Protectors Hip Fractures, Prevention | N/A | 2005-05-01 |
| Completed | RCT of Psychoeducational Program of Depression Unipolar Depression | Phase 2 | 2001-03-01 |
| Completed | Vitamin A and D Intake in Pregnancy, Infant Supplementation and Asthma Development Asthma in Children | — | 1999-01-01 |
| Active Not Recruiting | NORCCAP: Norwegian Colorectal Cancer Prevention Trial Colorectal Cancer, Adenoma | N/A | 1999-01-01 |