Arbeids- og kompetanseområde
Statistikk og Epidemiologi
- www.researchgate.net/profile/Roy_Nilsen
- scholar.google.com/citations?user=QqlZ2scAAAAJ&hl=no
Publikasjonar
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Effect of dietary interventions on nutritional status in patients with rheumatoid arthritis and spondyloarthritis - A systematic review and meta-analysis
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Age of onset for increased dose-adjusted serum concentrations of antidepressants and association with sex and genotype: An observational study of 34,777 individuals
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Unveiling sex bias and adverse neonatal outcomes in ultrasound estimation of gestational age: A population-based cohort study
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Nutritional risk, nutrition plan and risk of death in older health care service users with chronic diseases: A register-based cohort study
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Diabetes Distress and Associations With Demographic and Clinical Variables: A Nationwide Population-Based Registry Study of 10,186 Adults With Type 1 Diabetes in Norway
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Diabetes distress among 10,186 adults with type 1 diabetes in Norway – a nationwide register study
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Diabetes distress and general well being in adults with type 1 diabetes and impaired awareness of hypoglycaemia in Norway a population based registry study
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The impact of clinical and sociodemographic factors on sick leave after cardiac surgery
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The influence of socio-demographic and clinical factors on sick leave and return to work after open-heart surgery: a nationwide registry-based cohort study
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Risk of Subsequent Preeclampsia by Maternal Country of Birth: A Norwegian Population-Based Study
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Migration-related risk factors and perinatal outcomes A national population-based study of immigrant and non-immigrant women in Norway
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Adjusting for outcome risk factors in immigrant datasets: total or direct effects?
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Seasonal variation in gestational diabetes mellitus among women in Norway: a national population-based study
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Systemic Activation of the Kynurenine Pathway in Graves Disease With and Without Ophthalmopathy
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Women’s negative childbirth experiences and socioeconomic factors: Results from the Babies Born Better survey
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IDF2022-0141 Diabetes distress among 10,186 adults with type 1 diabetes in Norway – a nationwide register study
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Individualized nutrition plans and risk of death in older health care service users with chronic diseases
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Cohort profile: Outcomes & Multi-morbidity In Type 2 diabetes (OMIT) - a national registry-based observational cohort with focus on care and treatment of key high-risk groups in Norway
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Loneliness increases the risk of type 2 diabetes: a 20 year follow-up – results from the HUNT study
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Loneliness increases the risk of type 2 diabetes: a 20-year follow-up - results from the HUNT study
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Diabetes distress among adults with type 1 diabetes – a population-based register study
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Hearing threshold and physical performance in older people: a cross-sectional study from the HUNT4 cohort
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A randomized controlled trial on the effects of blue-blocking glasses compared to partial blue-blockers on sleep outcomes in the third trimester of pregnancy
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Rsik of Recurrent Preeclampsia by Maternal Region of Birth: A Nationwide Population-based Study
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Kliniske og sosiodemografiske faktorer som fører til lengre sykemelding etter hjertekirurgi.
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Maternal body mass index by country of birth and length of residence in immigrant women in Norway
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Seasonal variation in gestational diabetes mellitus
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Gestational diabetes and maternal country of birth
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Participation in diabetes educational programs in adults with type 2 diabetes in Norway: whom are we reaching?
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Associations of immigrant background and diabetes start course participation in adults with type 2 diabetes in Norway - a study from the OMIT-cohort
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Lower education and immigrant background are associated with lower participation in a diabetes education program - Insights from adult patients in the Outcomes & Multi-morbidity In Type 2 diabetes cohort (OMIT)
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Antibiotic use in children before, during and after hospitalisation
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Are infants exposed to antimicrobials during the first 3 months of life at increased risk of recurrent use? An explorative data-linkage study
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Maternal Folic Acid-Containing Supplement Use in Relation to Offspring Motor Function. A Prospective Study of 503 Mother-Child Dyads
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The ability of the Ages and Stages Questionnaire (ASQ) to indicate motor difficulties in infants in primary care
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Svangerskaps- og fødselskomplikasjoner i forhold til mors fødeland
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Epidural analgesia for labour pain in primiparous women in Norway – the impact of country of birth and migration related factors
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Epidural analgesia for labour pain in primiparous women in Norway – the impact of country of birth and migration related factors
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Use of patient-reported outcome measures (PROMs) in clinical diabetes consultations: the DiaPROM randomised controlled pilot trial
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Dizziness and physical health are associated with pain in dizzy patients—A cross-sectional study
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Sexual dysfunction in women with type 1 diabetes in Norway: A cross-sectional study on the prevalence and associations with physical and psychosocial complications
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Associations of overweight, obesity and osteoporosis with ankle fractures
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Correction: Early diagnosis of sepsis in emergency departments, time to treatment, and association with mortality: An observational study
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Lifelong exposure to air pollution and greenness in relation to asthma, rhinitis and lung function in adulthood
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A randomized controlled trial on the effect of blue-blocking glasses compared to partial blue-blockers on melatonin profile among nulliparous women in third trimester of the pregnancy
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Sleep, evening light exposure and perceived stress in healthy nulliparous women in the third trimester of pregnancy
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Obstetric outcomes in immigrant women in Norway
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Complications during pregnancy and childbirth in immigrant women giving birth in Norway
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Placental Abruption by Maternal Country of Birth: a nationwide population-based study
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Pregnancy Outcomes in Immigrant Women in Norway
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Preconception Folic Acid Supplement Use in Immigrant Women (1999-2016)
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Preconception Folic Acid Supplement Use in Immigrant women (1999-2016)
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Prevalence of patients “at risk of malnutrition” and nutritional routines among surgical and non-surgical patients at a large university hospital during the years 2008–2018
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Associations between seasonality and gestational diabetes mellitus
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Gestational diabetes mellitus by maternal country of birth and length of residence in immigrant women
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Gestational diabetes mellitus by maternal country of birth and length of residence in immigrant women in Norway
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Adverse neonatal outcomes in parous women who migrate to a new country after the first birth: a population-based study in Norway
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Adverse neonatal outcomes in parous women who migrate to a new country after the first birth: a population-based study in Norway
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Epidural analgesia for labour pain in nulliparous women in Norway in relation to maternal country of birth and migration related factors
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Norwegian Psychomotor Physiotherapy versus Cognitive Patient Education and active physiotherapy—A randomized controlled trial
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Voice and Exercise Related Respiratory Symptoms in Extremely Preterm Born Children After Neonatal Patent Ductus Arteriosus
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No association between osteoporosis and AO classification of distal radius fractures: an observational study of 289 patients
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Early diagnosis of sepsis in emergency departments, time to treatment, and association with mortality: An observational study
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Effects of external inspections on sepsis detection and treatment: a stepped-wedge study with cluster-level randomisation
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The relationship between perceived social support and PTSD symptoms after exposure to physical assault: An 8 years longitudinal study
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Correction: The effect of low dose marine protein hydrolysates on short-term recovery after high intensity performance cycling: A double-blinded crossover study
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Placental abruption in immigrant women in Norway: a population-based study
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Nutritional treatment is associated with longer survival in patients with pancreatic disease and concomitant risk of malnutrition
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Gestational diabetes mellitus by maternal country of birth and length of residence in immigrant women in Norway
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Use of Antidepressants in Older People during a 10-Year Period: An Observational Study on Prescribed Doses and Serum Levels
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Paternal country of origin and adverse neonatal outcomes in births to foreign-born women in Norway: A population-based cohort study
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Country of first birth and neonatal outcomes in migrant and Norwegian-born parous women in Norway: a population-based study
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Identifying targets for antibiotic stewardship interventions through analysis of the antibiotic prescribing process in hospitals - a multicentre observational cohort study
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One Year Change in 6-Minute Walk Test Outcomes is Associated with COPD Prognosis
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Epidural analgesia in first time mothers in relation to country of birth and migration to Norway
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No association between subnormal serum vitamin B12 and anemia in older nursing home patients
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Bias from self selection and loss to follow-up in prospective cohort studies
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Discharge care quality in hospitalised elderly patients: Extended validation of the Discharge Care Experiences Survey
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Measuring discharge quality based on elderly patients’ experiences with discharge conversation: a cross-sectional study
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Respiratory- and voice symptoms among extremely preterm born children with prolonged ventilator dependency. A Norwegian national cohort study.
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Efficacy of cognitive functional therapy (CFT) versus cognitive patient education and active physiotherapy (COPE+PT) in patients with non-specific low back pain – A randomized controlled trial
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Use of patient-reported outcome measures (PROMs) in clinical diabetes consultations: study protocol for the DiaPROM randomised controlled trial pilot study
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Loneliness as a risk factor for metabolic syndrome: results from the HUNT study
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Electronic capturing of patient-reported outcome measures on a touchscreen computer in clinical diabetes practice (the DiaPROM trial): a feasibility study
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DiaPROM og rutinemessig kartlegging av pasientrapporterte målinger i klinisk praksis
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Routine assessment of Patient-Reported Outcome Measures (PROMs) in the DiaPROM trial
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Being overweight in childhood, puberty, or early adulthood: Changing asthma risk in the next generation?
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Examining boys’ and girls’ health-related quality of life from the first to the third year in upper secondary school: a prospective longitudinal study.
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Health-related quality of life as predictor for mortality in patients treated with long-term mechanical ventilation
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The effect of low dose marine protein hydrolysates on short-term recovery after high intensity performance cycling: A double-blinded crossover study
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Preconception folic acid supplement use in immigrant women (1999-2016)
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Use of microbiology tests in the era of increasing AMR rates- a multicentre hospital cohort study
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Hyaluronic acid is superior to autologous fat for treatment of temporal hollowing after lateral orbital wall decompression: A prospective interventional trail
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Stillbirth in relation to maternal country of birth and other migration related factors: a population-based study in Norway
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Stillbirth in relation to maternal country of birth and other migration related factors: a population-based study in Norway
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The association between adherence to national antibiotic guidelines and mortality, readmission and length of stay in hospital inpatients: results from a Norwegian multicentre, observational cohort study
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Laryngoscopy Can Be a Valuable Tool for Unexpected Therapeutic Response in Noninvasive Respiratory Interventions.
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Laryngeal responses to mechanically assisted cough in progressing amyotrophic lateral sclerosis
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Elderly patients’ (≥65 years) experiences associated with discharge; Development, validity and reliability of the Discharge Care Experiences Survey
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Critical age windows in the impact of lifetime smoking exposure on respiratory symptoms and disease among ever smokers
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The feasibility and acceptability of electronic capturing of Patient-Reported Outcome Measures in clinical diabetes practice. The DiaPROM study.
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PROMS in diabetes practice. Electronically captured PROMs for assessing diabetes-related distress and psychological well-being in adults with type 1 diabetes. The DiaPROM Feasibility study.
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Positive IgA against transglutaminase 2 in patients with distal radius and ankle fractures compared to community-based controls
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Correction: HbA1c versus oral glucose tolerance test as a method to diagnose diabetes mellitus in vascular surgery patients
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Associations of fathers and their offsprings weight gain With non-allergic asthma
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Paternal characteristics associated with maternal periconceptional use of folic acid supplementation
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Preeclampsia by maternal reasons for immigration: A population-based study
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A positive association between nutritional risk and the incidence of surgical site infections: A hospital-based register study
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The effect of antibiotic stewardship interventions with stakeholder involvement in hospital settings: A multicentre, cluster randomized controlled intervention study
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In-hospital telemetry monitoring in patients with acute coronary syndrome – arrhythmias and long-term survival.
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Epidural analgesia in first time mothers in relation to country of birth and migration to Norway
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Pregnancy outcomes in relation to country of birth
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Acute hepatic porphyria and cancer risk: a nationwide cohort study
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Erratum to: Maternal intake of seafood and supplementary long chain n-3 poly-unsaturated fatty acids and preterm delivery
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Maternal intake of seafood and supplementary long chain n-3 poly-unsaturated fatty acids and preterm delivery
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Celiac disease and positive IgA tissue transglutaminase in patients with distal radius and ankle fracture: a case-control study
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Effects of external inspection on sepsis detection and treatment: a study protocol for a quasiexperimental study with a stepped-wedge design
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Late Breaking Abstract- Mothers' preconception overweight and offspring asthma
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Factors associated with change in health-related quality of life among individuals treated with long-term mechanical ventilation, a 6-year follow-up study
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Health related quality of life in patients treated with long-term mechanical ventilation
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Antimicrobial peptide levels are linked to airway inflammation, bacterial colonisation and exacerbations in chronic obstructive pulmonary disease
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Stillbirth in relation to mother’s country of birth and migration related factors: a population-based registry study
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Readmission and mortality one year after acute hospitalization in older patients with explained and unexplained anemia - A prospective observational cohort study
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Maternal use of folic acid supplements and infant risk of neural tube defects in Norway 1999-2013
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Abdominal aortic aneurysms - glycaemic status and mortality
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DNA Methylation in Newborns and Maternal Smoking in Pregnancy: Genome-wide Consortium Meta-analysis
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Maternal plasma folate impacts differential DNA methylation in an epigenome-wide meta-analysis of newborns
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Maternal plasma total neopterin and kynurenine/tryptophan levels during pregnancy in relation to asthma development in the offspring
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Impact of Pre-Pregnancy BMI on B Vitamin and Inflammatory Status in Early Pregnancy: An Observational Cohort Study
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Prevalence and determinants of preconception folic acid use: An Italian multicenter survey
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DNA methylation score as a biomarker in newborns for sustained maternal smoking during pregnancy
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Maternal smoking impacts key biological pathways in newborns through epigenetic modification in Utero
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Less thrombolysis in posterior circulation infarction—a necessary evil?
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Diffusion capacity and CT measures of emphysema and airway wall thickness – relation to arterial oxygen tension in COPD patients.
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Effect of a pre-exercise hydrocortisone dose on short-term physical performance in female patients with primary adrenal failure
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Females report higher postoperative pain scores than males after ankle surgery
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Three different outcomes in older community-dwelling patients receiving intermediate care in nursing home after acute hospitalization
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Circadian hormone profiles and insulin sensitivity in patients with Addison's disease: a comparison of continuous subcutaneous hydrocortisone infusion with conventional glucocorticoid replacement therapy
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Folic acid supplements and risk of oral clefts in the newborn: A population-based study.
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Subjective health complaints are not associated with tick bites or antibodies to Borrelia burgdorferi sensu lato in blood donors in western Norway: a cross-sectional study
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Need for more targeted measures - Only less severe hospital-associated infections declined after introduction of an infection control program
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Mortality related to hospital-associated infections in a tertiary hospital; repeated cross-sectional studies between 2004-2011
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Periconceptional folic acid supplementation and infant risk of congenital heart defects in Norway 1999-2009
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The Norwegian version of the Severe Respiratory Insufficiency Questionnaire
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Modified-release hydrocortisone decreases BMI and HbA1c in patients with primary and secondary adrenal insufficiency
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Nutritional risk profile in a university hospital population
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Predictors for return to own home and being alive at 6 months after nursing home intermediate care following acute hospitalization
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Predictors of weight loss are different in men and women after sleeve gastrectomy
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Diet matters, particularly in pregnancy – Results from MoBa studies of maternal diet and pregnancy outcomes
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Neonatal genome-wide methylation patterns in relation to birth weight in the Norwegian mother and child cohort
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Seroprevalence of antibodies to Borrelia burgdorferi sensu lato in healthy adults from western Norway: risk factors and methodological aspects
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Longterm follow-up in European respiratory health studies - patterns and implications
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Maternal smoking and DNA methylation in newborns: In utero effect or epigenetic inheritance?
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Folic acid supplementation and interpregnancy interval
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Predictors for PaO2 and hypoxemic respiratory failure in COPD-A three-year follow-up
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Folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study
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Retraction: " folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: A prospective observational cohort study"
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The nutritional strategy: four questions predict morbidity, mortality and health care costs
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Clinical outcomes in a cohort of anti-hepatitis C virus-positive patients with significant barriers to treatment referred to a Norwegian outpatient clinic
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Continuous subcutaneous hydrocortisone infusion versus oral hydrocortisone replacement for treatment of Addison's disease: A randomized clinical trial
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North-south gradients in plasma concentrations of B-vitamins and other components of one-carbon metabolism in Western Europe: results from the European Prospective Investigation into Cancer and Nutrition (EPIC) Study
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Working disability in Norwegian patients with vestibular schwannoma: vertigo predicts future dependence
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Conservative management or gamma knife radiosurgery for vestibular schwannoma: tumor growth, symptoms, and quality of life
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Study on the role of artificially sweetened beverages in preterm delivery has limitations Reply
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Interpregnancy Interval and Risk of Autistic Disorder
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HbA(1c) versus oral glucose tolerance test as a method to diagnose diabetes mellitus in vascular surgery patients
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Tick bites in healthy adults from western Norway: Occurrence, risk factors, and outcomes
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Comparison of 2011 and 2007 global initiative for chronic obstructive lung disease guidelines for predicting mortality and hospitalization
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Mortality by level of emphysema and airway wall thickness
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Maternal B vitamin status in pregnancy week 18 according to reported use of folic acid supplements
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Analysis of self-selection bias in a population-based cohort study of autism spectrum disorders
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Urinary excretion of kynurenine and tryptophan, cardiovascular events, and mortality after elective coronary angiography
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Use of folic acid supplements in early pregnancy in relation to maternal plasma levels in week 18 of pregnancy
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Folic acid supplementation, dietary folate intake during pregnancy and risk for spontaneous preterm delivery: a prospective observational cohort study
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Evaluating iron status and the risk of anemia in young infants using erythrocyte parameters
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Predictors for remission of major components of the metabolic syndrome after biliopancreatic diversion with duodenal switch (BPDDS)
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Factors influencing the development of evidence-based practice among nurses: a self-report survey
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Association between intake of artificially sweetened and sugar-sweetened beverages and preterm delivery: a large prospective cohort study
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Prevalence of Postpartum Depression in Parents. An Analysis of Possible Risk- and Protective Factors. Preliminary Results
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450K epigenome-wide scan identifies differential DNA methylation in newborns related to maternal smoking during pregnancy
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Assessing the impact of nicotine dependence genes on the risk of facial clefts: An example of the use of national registry and biobank data
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Self-reported smoking status and plasma cotinine concentrations among pregnant women in the Norwegian Mother and Child Cohort Study
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Pathways leading to health and quality of life in burn injured adults - A structural equation approach
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Pathways leading to self-perceived general health and overall quality of life in burned adults
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Maternal tryptophan and kynurenine pathway metabolites and risk of preeclampsia
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Factors Influencing the Development of Evidence-Based Practice
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Faktorer som influerer på utvikling av kunnskapsbasert praksis
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Influencing the Development of Evidence-Based Practice
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Prevalence of Postpartum Depression in Parents. An Analysis of Possible Risk- and Protective Factors. Preliminary Results
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Maternal folate levels in pregnancy and asthma in children at age 3 years
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Effect of dietary factors in pregnancy on risk of pregnancy complications: results from the Norwegian Mother and Child Cohort Study
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Low plasma vitamin B-6 status affects metabolism through the kynurenine pathway in cardiovascular patients with systemic inflammation
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Dietary and supplementary folate intake before and during pregnancy and the risk for spontaneous preterm delivery
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Infant birth size is not associated with maternal intake and status of folate during the second trimester in norwegian pregnant women
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Folate and reproductive health - An epidemiologic study of folic acid supplement use and its relation to birth outcomes in Norwegian pregnant women
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Association between use of hand hygiene products and rates of health care-associated infections in a large university hospital in Norway
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Self-selection and bias in a large prospective pregnancy cohort in Norway
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Neural tube defects and use of folate supplements in Norway
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Genetic variants in IRF6 and the risk of facial clefts: Single-marker and haplotype-based analyses in a population-based case-control study of facial clefts in Norway
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Folic acid and multivitamin supplement use and risk of placental abruption: A population-based registry study
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Healthcare-associated infection among residents of long-term care facilities: a cohort and nested case-control study
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Patterns and predictors of folic acid supplement use among pregnant women: the Norwegian Mother and Child Cohort Study
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Folate supplementation and twin pregnancies