Browsing ODA Open Digital Archive by Author "Zwart, John-Anker"
Now showing items 1-20 of 20
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The association between insomnia, c-reactive protein, and chronic low back pain: Cross-sectional analysis of the HUNT study, Norway
Ho, Kevin Kwan Ngai; Simic, Milena; Småstuen, Milada Cvancarova; de Barros Pinheiro, Marina; Ferreira, Paulo Herrique; Johnsen, Marianne Bakke; Heuch, Ingrid; Grotle, Margreth; Zwart, John-Anker; Nilsen, Kristian Bernhard (Scandinavian Journal of Pain;Volume 19: Issue 4, Journal article; Peer reviewed, 2019-07-09)Background and aims: Chronic low back pain (chronic LBP) is the number one cause for years lived with disability among 301 diseases and injuries analyzed by The Global Burden of Disease study 2013. Insomnia is highly ... -
Association of Modic change types and their short tau inversion recovery signals with clinical characteristics : a cross sectional study of chronic low back pain patients in the AIM-study
Bråten, Lars Christian Haugli; Schistad, Ellina Iordanova; Espeland, Ansgar; Kristoffersen, Per M; Haugen, Anne Julsrud; Marchand, Gunn Hege; Vetti, Nils; Pripp, Are Hugo; Kadar, Thomas; Skouen, Jan Sture; Grotle, Margreth; Grøvle, Lars; Zwart, John-Anker; Brox, Jens Ivar; Storheim, Kjersti (BMC Musculoskeletal Disorders;21, Article number: 368 (2020), Journal article; Peer reviewed, 2020-06-10)Background: Modic Changes (MCs, magnetic resonance imaging (MRI) signal changes in the vertebral bone marrow extending from the vertebral endplate) may represent a subgroup of nonspecific chronic low back pain that could ... -
Associations between the number of children, age at childbirths and prevalence of chronic low back pain: the Nord-Trøndelag Health Study
Heuch, Ingrid; Heuch, Ivar; Hagen, Knut; Storheim, Kjersti; Zwart, John-Anker (BMC Public Health;20, Article number: 1556 (2020), Journal article; Peer reviewed, 2020-10-15)Background: Associations between childbirths and subsequent risk of low back pain (LBP) have not been clarified. Changes in sex hormone levels or lumbar posture during pregnancy may have an impact on LBP later in life. The ... -
Clinical effect modifiers of antibiotic treatment in patients with chronic low back pain and Modic changes - Secondary analyses of a randomised, placebo-controlled trial (the AIM study)
Bråten, Lars Christian Haugli; Grøvle, Lars; Espeland, Ansgar; Pripp, Are Hugo; Grotle, Margreth; Hellum, Christian; Haugen, Anne Julsrud; Froholdt, Anne; Rolfsen, Mads Peder; Nygaard, Øystein Petter; Lutro, Olav; Kristoffersen, Per Martin; Anke, Audny; Schistad, Ellina Iordanova; Skouen, Jan Sture; Brox, Jens Ivar; Zwart, John-Anker; Storheim, Kjersti (BMC Musculoskeletal Disorders;21, Article number: 458 (2020), Journal article; Peer reviewed, 2020-07-13)Background: Randomised trials on antibiotic treatment for patients with chronic low back pain and vertebral endplate changes visible on MRI (Modic changes) have shown mixed results. A possible explanation might be a real ... -
Complications, reoperations, readmissions, and length of hospital stay in 34 639 surgical cases of lumbar disc herniation
Fjeld, Olaf Randall; Grøvle, Lars; Helgeland, Jon; Småstuen, Milada Cvancarova; Solberg, Tore; Zwart, John-Anker; Grotle, Margreth (The Bone & Joint Journal;Volume 101-B, Issue 4 / April 2019, Journal article; Peer reviewed, 2019-03-31)Aims The aims of this study were to determine the rates of surgical complications, reoperations, and readmissions following herniated lumbar disc surgery, and to investigate the impact of sociodemographic factors and ... -
Cost–utility analysis of antibiotic treatment in patients with chronic low back pain and Modic changes: results from a randomised, placebo-controlled trial in Norway (the AIM study)
Grotle, Margreth; Bråten, Lars Christian Haugli; Brox, Jens Ivar; Espeland, Ansgar; Zolic-Karlsson, Zinajda; Killingmo, Rikke Munk; Tingulstad, Alexander; Grøvle, Lars; Johanessen, Anne Froholdt; Kristoffersen, Per Martin; Wigemyr, Monica; van Tulder, Maurits W.; Storheim, Kjersti; Zwart, John-Anker (BMJ Open;Volume 10, Issue 6, Journal article; Peer reviewed, 2020-06-15)Objective: To evaluate the cost–utility of 100 days of antibiotics in patients with chronic low back pain (LBP) and type I or II Modic changes included in the Antibiotic treatment In patients with chronic low back pain and ... -
Criteria for success after surgery for cervical radiculopathy—estimates for a substantial amount of improvement in core outcome measures
Mjåset, Christer; Zwart, John-Anker; Goedmakers, Caroline M.W.; Smith, Timothy R.; Solberg, Tore; Grotle, Margreth (The Spine Journal;Volume 20, Issue 9, September 2020, Journal article; Peer reviewed, 2020-06-02)Background context: Defining clinically meaningful success criteria from patient-reported outcome measures (PROMs) is crucial for clinical audits, research and decision-making. Purpose: We aimed to define criteria for a ... -
The effect of infliximab in patients with chronic low back pain and Modic changes (the BackToBasic study): study protocol of a randomized, double blind, placebo-controlled, multicenter trial
Gjefsen, Elisabeth; Bråten, Lars Christian Haugli; Goll, Guro Løvik; Wigemyr, Monica; Bolstad, Nils; Valberg, Morten; Schistad, Ellina Iordanova; Marchand, Gunn Hege; Granviken, Fredrik; Selmer, Kaja Kristine; Johanessen, Anne Froholdt; Haugen, Anne Julsrud; Dagestad, Magnhild Hammersland; Vetti, Nils; Bakland, Gunnstein; Lie, Benedicte Alexandra; Haavardsholm, Espen A.; Nilsen, Aksel Thuv; Holmgard, Thor Einar; Kadar, Thomas; Kvien, Tore Kristian; Skouen, Jan Sture; Grøvle, Lars; Brox, Jens Ivar; Espeland, Ansgar; Storheim, Kjersti; Zwart, John-Anker (BMC Musculoskeletal Disorders;21, Article number: 698 (2020), Journal article; Peer reviewed, 2020-10-21)Background: Low back pain is common and a significant number of patients experience chronic low back pain. Current treatment options offer small to moderate effects. Patients with vertebral bone marrow lesions visualized ... -
Efficacy of antibiotic treatment in patients with chronic low back pain and Modic changes (the AIM study): double blind, randomised, placebo controlled, multicentre trial
Bråten, Lars Christian Haugli; Rolfsen, Mads Peder; Espeland, Ansgar; Wigemyr, Monica; Assmus, Jörg; Froholdt, Anne; Haugen, Anne Julsrud; Marchand, Gunn Hege; Kristoffersen, Per M; Lutro, Olav; Randen, Sigrun; Wilhelmsen, Maja; Winsvold, Bendik K S; Kadar, Thomas; Holmgard, Thor Einar; Vigeland, Maria Dehli; Vetti, Nils; Nygaard, Øystein Petter; Lie, Benedicte Alexandra; Hellum, Christian; Anke, Audny; Grotle, Margreth; Schistad, Ellina Iordanova; Skouen, Jan Sture; Grøvle, Lars; Brox, Jens Ivar; Zwart, John-Anker; Storheim, Kjersti (BMJ; 2019;367:l5654, Journal article; Peer reviewed, 2019-08-29)Objective: To assess the efficacy of three months of antibiotic treatment compared with placebo in patients with chronic low back pain, previous disc herniation, and vertebral endplate changes (Modic changes). Design: ... -
Impact of technical variations on the ring-finger test for carpal tunnel syndrome
Schulze, Daniel Gregor; Nordby, Karl-Christian; Småstuen, Milada Cvancarova; Clemm, Thomas; Grotle, Margreth; Zwart, John-Anker; Nilsen, Kristian Bernhard (Clinical Neurophysiology Practice;Volume 5, 2020, Journal article; Peer reviewed, 2019-11-23) -
Lumbar spine surgery across 15 years: Trends, complications and reoperations in a longitudinal observational study from Norway
Grotle, Margreth; Småstuen, Milada Cvancarova; Fjeld, Olaf Randall; Grøvle, Lars; Helgeland, Jon; Storheim, Kjersti; Solberg, Tore; Zwart, John-Anker (BMJ Open;Volume 9, Issue 8, Journal article; Journal article; Peer reviewed, 2019-06-25)Background: Studies from different Western countries have reported a rapid increase in spinal surgery rates, an increase that exceeds by far the growing incidence rates of spinal disorders in the general population. There ... -
The mediating effect of body mass index on the relationship between smoking and hip or knee replacement due to primary osteoarthritis. A population-based cohort study (the HUNT study).
Johnsen, Marianne Bakke; Hellevik, Alf Inge; Småstuen, Milada C; Langhammer, Arnulf; Furnes, Ove; Flugsrud, Gunnar B; Nordsletten, Lars; Zwart, John-Anker; Storheim, Kjersti (PLoS ONE;12 (12), Journal article; Peer reviewed, 2017-12-28)To investigate the total effect of smoking on total hip or knee replacement (THR/TKR) due to primary osteoarthritis (OA) and to quantify the indirect effect of smoking through body mass index (BMI). Participants from the ... -
Obesity in young adulthood: The role of physical activity level, musculoskeletal pain, and psychological distress in adolescence (the hunt-study)
Guddal, Maren Hjelle; Stensland, Synne; Småstuen, Milada Cvancarova; Johnsen, Marianne Bakke; Heuch, Ingrid; Zwart, John-Anker; Storheim, Kjersti (International Journal of Environmental Research and Public Health;Volume 17, Issue 12, Journal article; Peer reviewed, 2020-06-26)The global obesity epidemic raises long-term health concerns which underline the importance of preventive efforts. We aimed to investigate individual and combined effects of common health problems in adolescence on the ... -
Oedema on STIR modified the effect of amoxicillin as treatment for chronic low back pain with Modic changes-subgroup analysis of a randomized trial
Kristoffersen, Per M; Bråten, Lars Christian Haugli; Vetti, Nils; Grøvle, Lars; Hellum, Christian; Storheim, Kjersti; Zwart, John-Anker; Assmus, Jörg; Espeland, Ansgar (European Radiology;, Journal article; Peer reviewed, 2020-11-27)Objective To evaluate potential MRI-defined effect modifiers of amoxicillin treatment in patients with chronic low back pain and type 1 or 2 Modic changes (MCs) at the level of a previous lumbar disc herniation (index ... -
Physical activity and sport participation among adolescents: Associations with mental health in different age groups. Results from the Young-HUNT study: A cross-sectional survey
Guddal, Maren Hjelle; Stensland, Synne; Småstuen, Milada Cvancarova; Johnsen, Marianne Bakke; Zwart, John-Anker; Storheim, Kjersti (BMJ Open;Volume 9, Issue 9, Journal article; Peer reviewed, 2019-06-26)Objectives: Knowledge of how physical activity (PA) and sport participation are related to mental health throughout adolescence is scarce. Our objective was to describe PA levels and sport participation in a population-based ... -
Physical activity level and sport participation in relation to musculoskeletal pain in a population-based study of adolescents: The Young-HUNT Study
Guddal, Maren Hjelle; Stensland, Synne; Småstuen, Milada C; Johnsen, Marianne Bakke; Zwart, John-Anker; Storheim, Kjersti (Journal article; Peer reviewed, 2017)Background: Prevalence of musculoskeletal pain among adolescents is high, and pain in adolescence increases the risk of chronic pain in adulthood. Studies have shown conflicting evidence regarding associations between ... -
Psychophysical or spinal reflex measures when assessing conditioned pain modulation?
Lie, Marie; Petriu, Elena; Matre, Dagfinn; Hansson, Per; Andersen, Ole Kæseler; Zwart, John-Anker; Nilsen, Kristian Bernhard (European Journal of Pain;Volume 23, Issue 10, November 2019, Journal article; Peer reviewed, 2019-07-29)Background: Assessing conditioning pain modulation (CPM) with spinal reflex measures may produce more objective and stable CPM effects than using psychophysical measures. The aim of the study was to compare the CPM effect ... -
Public and private health service in Norway: a comparison of patient characteristics and surgery criteria for patients with nerve root affections due to discus herniation
Grotle, Margreth; Solberg, Tore; Storheim, Kjersti; Lærum, Even; Zwart, John-Anker (Peer reviewed; Journal article; Journal article, 2014)Purpose To compare sociodemographic, life style and clinical characteristics in patients operated for lumbar disc herniation in public and private clinics in Norway, and evaluate whether selection for surgery and surgical ... -
The rates of lumbar spinal stenosis surgery in Norwegian public hospitals: a threefold increase from 1999 to 2013
Grøvle, Lars; Fjeld, Olaf Randall; Haugen, Anne Julsrud; Helgeland, Jon; Småstuen, Milada Cvancarova; Solberg, Tore; Zwart, John-Anker; Grotle, Margreth (Spine;, Journal article; Peer reviewed, 2018-09-01)Study Design: Retrospective administrative database study. Objective: To assess temporal and regional trends, and length of hospital stay, in lumbar spinal stenosis (LSS) surgery in Norwegian public hospitals from 1999 ... -
A tonic heat test stimulus yields a larger and more reliable conditioned pain modulation effect compared to a phasic heat test stimulus
Lie, Marie; Matre, Dagfinn; Hansson, Per; Stubhaug, Audun; Zwart, John-Anker; Nilsen, Kristian Bernhard (Pain Reports;Volume 2 - Issue 6, Journal article; Peer reviewed, 2017-11)Introduction: The interest in conditioned pain modulation (CPM) as a clinical tool for measuring endogenously induced analgesia is increasing. There is, however, large variation in the CPM methodology, hindering comparison ...