Joseph Sexton

Senior Researcher | Statistician

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Education

Major at the Department of Mathematics, Department of Statistics, University of Oslo (1997)
Doctorate (PhD) at the Department of Basic Medical Sciences, Department of Biostatistics, University of Oslo (2008)

Position

Senior Researcher, Clinic for Rheumatology, Outpatient Clinic and Research, Diakonhjemmet Hospital

Field of interest

Clinical studies and design
Data analysis
Programming
Machine learning

Email

This email address is protected from spambots. You need JavaScript enabled to view it.

Email

+47 92081418

Visiting address

Diakonhjemmet Hospital
Superintendent's residence
Reidar Kobros vei 8
0370 Oslo

Postal address

Diakohjemmet Hospital
PO Box 23 Vinderen
0319 Oslo

Projects

WP1 - Optimized medical interventions

ARCTIC

Remission in patients with rheumatoid arthritis: a randomized controlled trial investigating the use of ultrasound in clinical follow-up

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WP1 - Optimized medical interventions

ARCTIC REWIND

Study on tapering treatment in rheumatoid arthritis without loss of disease control.

WP1 - Optimized medical interventions

ARCTIC REWIND extension study

Long-term follow-up of patients with well-controlled rheumatoid arthritis - the ARCTIC REWIND extension study

WP4 - Management of additional diseases

ExeHeart

Better cardiovascular health for patients with inflammatory joint disease

WP5 - Innovative approaches to remote care

NOR-Flare

Remote follow-up of patients with rheumatoid arthritis

WP2 - PPhenotyping for personalized medicine

Nor-vaC

Immunological response to COVID-19 vaccine in patients on immunosuppressive therapy

WP5 - Innovative approaches to remote care

ReMonit

Digital home monitoring of patients with spondyloarthritis

WP5 - Innovative approaches to remote care

ReMonit Gout

Gout management app

WP1 - Optimized medical interventions

SQUEEZE

Maximizing the effectiveness of prescription drugs for rheumatoid arthritis

WP2 - PPhenotyping for personalized medicine

START

Early diagnosis of newly occurring arthritis

Publications

Publications retrieved from the National Science Archives (NVA):

Study protocol for the PICASSO trial: A randomized placebo-controlled trial to investigate the efficacy and safety of intraarticular steroid injections and an occupational therapy intervention in painful inflammatory carpometacarpal-1 osteoarthritis

2025

Assessment of lipid-lowering therapies in high-risk patients with inflammatory joint diseases—Insights from a preventive cardio-rheumatism clinic

2025

Remission in gout is possible: 5-year follow-up in the NOR-Gout study

2025

Protocol for the MERINO study: A randomized placebo-controlled trial assessing the efficacy, safety, and cost-effectiveness of methotrexate in people with erosive hand osteoarthritis

2025

Impact of provider feedback on quality improvement in rehabilitation services: an interrupted time series analysis

2025

Longitudinal risk of serious infections in patients with inflammatory arthritis on immunomodulating therapy compared to controls

2025

Predictors of 1-year mortality in a clinical cohort of hip fracture patients

2025

Treatment with methotrexate plus oral prednisolone versus triple therapy (methotrexate/sulfasalazine/hydroxychloroquine) plus intra-articular glucocorticoids in early rheumatoid arthritis: a prespecified nonrandomised subgroup analysis of clinical and radiographic data at 48 weeks from the NORD-STAR trial's conventional treatment arm

2025

Remote monitoring or patient-initiated care in axial spondyloarthritis: a 3-armed randomized controlled noninferiority trial

2025

Recognition of Glycine Versus Nonglycine Citrulline Motifs Dictating the HLA Class II Association of Anticitrullinated Protein Antibodies: Insights From Autoantibody Profiling of 6,900 Scandinavian Patients With Rheumatoid Arthritis

2025

Occupational therapist-led versus rheumatologist-led care in people with hand osteoarthritis in Norway: an open-label, multicentre, randomized controlled, non-inferiority trial

2025

Three-Year Results of Tapering Tumor Necrosis Factor Inhibitor to Withdrawal Compared to Stable Tumor Necrosis Factor Inhibitor Among Patients With Rheumatoid Arthritis in Sustained Remission: A Multicenter Randomized Trial

2025

Development of machine learning models for predicting non-remission in early RA highlights the robust predictive importance of the RAID score-evidence from the ARCTIC study

2025

Health-related Quality of Life in DMARD-treated adults with Juvenile Idiopathic Arthritis Compared to Rheumatoid Arthritis and the General Population

2025

Effects of tapering conventional synthetic disease-modifying antirheumatic drugs to drug-free remission versus stable treatment in rheumatoid arthritis (ARCTIC REWIND): 3-year results from an open-label, randomized controlled, non-inferiority trial

2024

Clinical consequences of infliximab immunogenicity and the effect of proactive therapeutic drug monitoring: exploratory analyzes of the randomised, controlled NOR-DRUM trials

2024

Does follow-up really matter? A convergent mixed methods study exploring follow-up across levels of care in rehabilitation of patients with rheumatic and musculoskeletal diseases

2024

Effect of high-intensity interval training in physiotherapy primary care for patients with inflammatory arthritis: The ExeHeart randomized controlled trial

2024

Performance of the Rheumatoid Arthritis Impact of Disease (RAID) score in relation to flares in disease activity

2024

Developing and externally validating multinomial prediction models for methotrexate treatment outcomes in patients with rheumatoid arthritis: results from an international collaboration

2024

Incidence and outcome of COVID-19 following vaccine and hybrid immunity in patients on immunosuppressive therapy: identification of protective post-immunisation anti-RBD antibody levels in a prospective cohort study

2024

Use of direct-acting anticoagulants (DOACs) delays surgery and is associated with increased mortality in hip fracture patients

2024

Ultrasound evaluation contrasts clinical disease activity evaluation in rheumatoid arthritis patients with concomitant anxiety or depression

2024

Agreement between patient-reported flares and clinically significant flare status in patients with rheumatoid arthritis in sustained remission: data from the ARCTIC REWIND trials

2024

Interstitial lung disease in rheumatoid or psoriatic arthritis patients initiating biologics, and controls - data from five Nordic registries

2024

T cell responses to repeated SARS-CoV-2 vaccination and breakthrough infections in patients on TNF inhibitor treatment: a prospective cohort study

2024

Non-adherence to urate lowering therapy in gout after 5 years is related to poor outcomes - results from the NOR-Gout study

2024

Biological material for biomarker research in spondyloarthritis: mapping the availability in European rheumatology registries

2024

Therapeutic serum level for adalimumab in rheumatoid arthritis: exploratory analyzes of data from a randomized phase III trial

2024

Humoral and cellular responses to a fifth bivalent SARS-CoV-2 vaccine dose in patients with immune-mediated inflammatory diseases on tumor necrosis factor inhibitors: a prospective cohort study

2024

Follow-Up of Patients With Axial Spondyloarthritis in Specialist Health Care With Remote Monitoring and Self-Monitoring Compared With Regular Face-to-Face Follow-Up Visits (the ReMonit Study): Protocol for a Randomized, Controlled Open-Label Noninferiority Trial

2023

Lifestyle factors predict gout outcomes: Results from the NOR-Gout longitudinal 2-year treat-to-target study

2023

Adalimumab serum levels and anti-drug antibodies: associations to treatment response and drug survival in inflammatory joint diseases

2023

Criterion Validity and Responsiveness of Estimated Cardiorespiratory Fitness Models in Patients with Inflammatory Joint Disease

2023

Course and predictors of work productivity in gout - results from the NOR-Gout longitudinal 2-year treat-to-target study

2023

Remission, response, retention and persistence to treatment with disease-modifying agents in patients with rheumatoid arthritis: a study of harmonized Swedish, Danish and Norwegian cohorts

2023

Effect of tapered versus stable treatment with tumor necrosis factor inhibitors on disease flares in patients with rheumatoid arthritis in remission: a randomised, open label, non-inferiority trial

2023

Associations between pain sensitization and measures of physical function in people with hand osteoarthritis: Results from the Nor-Hand study

2023

Calprotectin, a sensitive marker of inflammation, is robustly assessed in plasma from patients with early or established rheumatoid arthritis by use of different laboratory methods

2023

Discontinuation rate of sulfasalazine, leflunomide and methotrexate due to adverse events in a real-life setting (NOR-DMARD)

2023

Beliefs about medicines in gout patients: results from the NOR-Gout 2-year study

2023

Discontinuation of Conventional Synthetic Disease-Modifying Antirheumatic Drugs in Patients with Rheumatoid Arthritis and Excellent Disease Control

2023

Associations between cardiovascular risk factors, disease activity and cardiorespiratory fitness in patients with inflammatory joint disease: a cross-sectional analysis

2023

Bridging gaps across levels of care in rehabilitation of patients with rheumatic and musculoskeletal diseases: Results from a stepped-wedge cluster randomized controlled trial

2023

HLA-DQ2 is associated with anti-drug antibody formation to infliximab in patients with immune-mediated inflammatory diseases

2023

Patient Experienced Symptom State in rheumatoid arthritis: sensitivity to change in disease activity and impact

2023

Treatment Response to Tumor Necrosis Factor Inhibitors and Methotrexate Monotherapy in Adults With Juvenile Idiopathic Arthritis: Data From NOR-DMARD

2022

Haematological malignancies in patients with psoriatic arthritis overall and treated with TNF inhibitors: a Nordic cohort study

2022

Identification of SNPs associated with methotrexate treatment outcomes in patients with early rheumatoid arthritis

2022

Four SARS-CoV-2 vaccine doses or hybrid immunity in patients on immunosuppressive therapies: a Norwegian cohort study

2022

All-cause and cause-specific mortality in rheumatoid arthritis, psoriatic arthritis and axial spondyloarthritis: a nationwide registry study

2022

Interventions for osteoarthritis pain: A systematic review with network meta-analysis of existing Cochrane reviews

2022

Immunogenicity and safety of a three-dose SARS-CoV-2 vaccination strategy in patients with immune-mediated inflammatory diseases on immunosuppressive therapy

2022

Fluctuation and change of serum urate levels and flares in gout: results from the NOR-Gout study

2022

The persistence of anti-Spike antibodies following two SARS-CoV-2 vaccine doses in patients on immunosuppressive therapy compared to healthy controls—a prospective cohort study

2022

A Clinical Audit of Cardiovascular Risk Factors and Disease in Patients with Rheumatoid Arthritis - SURF-RA

2022

Risk factors for anti-drug antibody formation to infliximab: Secondary analyzes of a randomized controlled trial

2022

Immunogenicity and Safety of Standard and Third-Dose SARS-CoV-2 Vaccination in Patients Receiving Immunosuppressive Therapy

2022

Oral anticoagulant treatment in rheumatoid arthritis patients with atrial fibrillation results of an international audit

2022

An international audit of the management of dyslipidaemia and hypertension in patients with rheumatoid arthritis: results from 19 countries

2022

Using observational study data as an external control group for a clinical trial: an empirical comparison of methods to account for longitudinal missing data

2022

Psoriatic arthritis, axial spondyloarthritis and rheumatoid arthritis in Norway: nationwide prevalence and use of biologic agents

2022

One- and 2-year flare rates after treat-to-target and tight-control therapy of gout: results from the NOR-Gout study

2022

Associations between quality of health care and clinical outcomes in patients with rheumatic and musculoskeletal diseases: a rehabilitation cohort study

2022

Inflammation and biologic therapy in patients with rheumatoid arthritis achieving versus not achieving ACR/EULAR Boolean remission in a treat-to-target study

2022

Identifying long-term and imminent suicide predictors in a general population and a clinical sample with machine learning

2022

Effect of high-intensity exercise on cardiorespiratory fitness, cardiovascular disease risk and disease activity in patients with inflammatory joint disease: Protocol for the ExeHeart randomized controlled trial

2022

Associations of Body Mass Index With Pain and the Mediating Role of Inflammatory Biomarkers in People With Hand Osteoarthritis

2022

Humoral and cellular immune responses to two and three doses of SARS-CoV-2 vaccines in rituximab-treated patients with rheumatoid arthritis: a prospective, cohort study

2021

Two-year reduction of dual-energy CT urate deposits during a treat-to-target strategy in gout in the NOR-Gout longitudinal study.

2021

Serum etanercept concentrations in relation to disease activity and treatment response assessed by ultrasound, biomarkers and clinical disease activity scores: results from a prospective observational study of patients with rheumatoid arthritis.

2021

Effect of Therapeutic Drug Monitoring vs Standard Therapy During Maintenance Infliximab Therapy on Disease Control in Patients With Immune-Mediated Inflammatory Diseases: A Randomized Clinical Trial

2021

Development and validation of a patient-reported outcome measure for systemic sclerosis: the EULAR Systemic Sclerosis Impact of Disease (ScleroID) questionnaire.

2021

Incidence, sociodemographic factors and treatment penetration of rheumatoid arthritis and psoriatic arthritis in Norway.

2021

Diabetes mellitus and cardiovascular risk management in patients with rheumatoid arthritis: an international audit.

2021

Fatigue in patients with early rheumatoid arthritis undergoing treat-to-target therapy: predictors and response to treatment

2021

Comparison of 2 Postoperative Therapy Regimens After Trapeziectomy due to Osteoarthritis: A Randomized, Controlled Trial

2021

Serum golimumab concentration and anti-drug antibodies are associated with treatment response and drug survival in patients with inflammatory joint diseases: data from the NOR-DMARD study

2021

Serious infections in patients with rheumatoid arthritis and psoriatic arthritis treated with tumor necrosis factor inhibitors: data from register linkage of the NOR-DMARD study

2021

Risk of solid cancers overall and by subtypes in patients with psoriatic arthritis treated with TNF inhibitors - a Nordic cohort study

2021

Trajectories of change in symptom severity in patients with fibromyalgia: exploratory analyzes of a randomized controlled trial

2021

12-month results from the real-life observational treat-to-target and tight-control therapy NOR-Gout study: Achievements of the urate target levels and predictors of obtaining this target

2021

Degree of arterial stiffness is comparable across inflammatory joint disease entities

2021

Effect of Half-Dose vs Stable-Dose Conventional Synthetic Disease-Modifying Antirheumatic Drugs on Disease Flares in Patients with Rheumatoid Arthritis in Remission: The ARCTIC REWIND Randomized Clinical Trial

2021

Value of MRI and ultrasound for prediction of therapeutic response and erosive progression in patients with early rheumatoid arthritis managed by an aggressive treat-to-target strategy

2021

Effect of Therapeutic Drug Monitoring vs Standard Therapy During Infliximab Induction on Disease Remission in Patients With Chronic Immune-Mediated Inflammatory Diseases: A Randomized Clinical Trial

2021

Prediction of cardiovascular events in rheumatoid arthritis using risk age calculations: evaluation of concordance across risk age models

2020

Drug retention, inactive disease and response rates in 1860 patients with axial spondyloarthritis initiating secukinumab treatment: routine care data from 13 registries in the EuroSpA collaboration

2020

Therapeutic drug monitoring of infliximab compared to standard clinical treatment with infliximab: study protocol for a randomised, controlled, open, parallel-group, phase IV study (The NOR-DRUM study)

2020

Trajectories of fatigue in actively treated patients with established rheumatoid arthritis starting biologic DMARD therapy

2020

Does Older Age have an Impact on Rituximab Efficacy and Safety? Results from the NOR-DMARD Register

2020

Fatigue is cross-sectionally not associated with objective assessments of inflammation, but changes in fatigue are associated with changes of disease activity assessments during biologic treatment of patients with established rheumatoid arthritis

2020

Efficacy and safety of CT-P13 in inflammatory bowel disease after switching from originator infliximab: Exploratory analyzes from the NOR-SWITCH main and extension trials

2020

Achievement of Remission in Two Early Rheumatoid Arthritis Cohorts Implementing Different Treat-to-Target Strategies

2020

Trends in All-Cause and Cardiovascular Mortality in Patients With Incident Rheumatoid Arthritis: A 20-year Follow-Up Matched Case-Cohort Study

2019

Effects of long-term statin treatment on coronary atherosclerosis in patients with inflammatory joint diseases

2019

Associations between certolizumab pegol serum levels, anti-drug antibodies and treatment response in patients with inflammatory joint diseases: data from the NOR-DMARD study

2019

Peptidylarginine deiminase 4 (PAD4) activity in early rheumatoid arthritis

2019

Four-year follow-up of inflammatory arthropathy patients treated with golimumab: Data from the observational multicentre NOR-DMARD study

2019

Assessing synovitis in the hands in patients with rheumatoid arthritis by ultrasound: an agreement study exploring the most inflammatory active side from two Norwegian trials

2019

Swollen, but not tender joints, are independently associated with ultrasound synovitis: Results from a longitudinal observational study of patients with established rheumatoid arthritis

2019

Long‐term efficacy and safety of biosimilar infliximab (CT‐P13) after switching from originator infliximab: Open‐label extension of the NOR‐SWITCH trial

2019

Comparing the disease course of patients with seronegative and seropositive rheumatoid arthritis fulfilling the 2010 ACR/EULAR classification criteria in a treat-to-target setting: 2-year data from the ARCTIC trial

2018

Can disease activity in patients with psoriatic arthritis be adequately assessed by a modified Disease Activity index for PSoriatic Arthritis (DAPSA) based on 28 joints?

2018

Tender joint count may not reflect inflammatory activity in established rheumatoid arthritis patients: results from a longitudinal study

2018

DAPSA and ultrasound show different perspectives of psoriatic arthritis disease activity: results from a 12-month longitudinal observational study in patients starting treatment with biological disease-modifying antirheumatic drugs

2018

Comparative analyzes of responsiveness between the Rheumatoid Arthritis Impact of Disease score, other patient-reported outcomes and disease activity measures: secondary analyzes from the ARCTICstudy

2018

Predicting achievement of the treatment targets at 6 months from 3-month response levels in rheumatoid arthritis: data from real-life follow-up in the NOR-DMARD study

2018

A Key Characteristic of Sex Differences in the Developing Brain: Greater Variability in Brain Structure of Boys than Girls

2018

Is synovial hypertrophy without Doppler activity sensitive to change? Post-hoc analysis from a rheumatoid arthritis ultrasound study

2018

The impact of ultrasound on the use and efficacy of intraarticular glucocorticoid injections in early rheumatoid arthritis: Secondary analyzes from a randomized trial examining the benefit of ultrasound in a clinical tight control regimen

2018

The role of anti-citrullinated protein antibody reactivities in an inception cohort of patients with rheumatoid arthritis receiving treat-to-target therapy

2018

Health-related quality of life in patients with psoriatic and rheumatoid arthritis: Data from the prospective multicentre NOR-DMARD study compared with Norwegian general population controls

2018

Do depression and anxiety reduce the likelihood of remission in rheumatoid arthritis and psoriatic arthritis? Data from the prospective multicentre NOR-DMARD study

2017

The effect of training in mindfulness and affect consciousness on the therapeutic environment for patients with psychoses: An exploratory intervention study

2016

Significance of doctors' age for prescribed amount of benzodiazepines

2015

Dietary patterns among Norwegian 2-year-olds in 1999 and in 2007 and associations with child and parent characteristics

2013