Jan Nielsen

PhD, Master of Science

  • Denmark

20092019
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Research Output 2009 2019

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Journal article
2019
Inflammatory Bowel Diseases
Crohn Disease
Ulcerative Colitis
Odds Ratio
Denmark
Ulcerative Colitis
Inflammatory Bowel Diseases
Crohn Disease
Psoriatic Arthritis
Psoriasis
2018
74 Downloads (Pure)

Children Born by Women With Rheumatoid Arthritis and Increased Susceptibility for Chronic Diseases: a nationwide cohort study

Jølving, L. R., Nielsen, J., Kesmodel, U. S., Beck-Nielsen, S. & Nørgård, B. M., Aug 2018, In : Arthritis Care & Research. 70, 8, p. 1192-1197

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Cohort Studies
Maternal Exposure
Mothers
Confidence Intervals
Denmark
102 Downloads (Pure)

Chronic diseases in the children of women with maternal thyroid dysfunction: a nationwide cohort study

Jølving, L. R., Nielsen, J., Kesmodel, U. S., Nielsen, R. G., Nørgård, B. M. & Beck-Nielsen, S. S., 1. Jan 2018, In : Clinical Epidemiology. 10, p. 1381-1390

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Cohort Studies
Hashimoto Disease
Mothers
Denmark
Proportional Hazards Models

Fecal Calprotectin during Pregnancy in Women with Moderate-Severe Inflammatory Bowel Disease

Kammerlander, H., Nielsen, J., Kjeldsen, J., Knudsen, T., Gradel, K. O., Friedman, S. & Nørgård, B. M., 19. Mar 2018, In : Inflammatory Bowel Diseases. 24, 4, p. 839-848

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Confidence Intervals
Pregnant Women
Albumins
Third Pregnancy Trimester
85 Downloads (Pure)

Risk factors and between-hospital variation of caesarean section in Denmark: a cohort study

Wehberg, S., Guldberg, R., Gradel, K. O., Kesmodel, U. S., Munk, L., Andersson, C. B., Jølving, L. R., Nielsen, J. & Nørgård, B. M., 1. Feb 2018, In : BMJ Open. 8, 2, 9 p., e019120.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Denmark
Cohort Studies
Emergencies
Hospital Units
Cephalopelvic Disproportion
2017

Anti-TNF-alpha Therapy in Late Pregnancy and the Risk of Adverse Birth Outcomes in Women with Inflammatory Bowel Disease

Kammerlander, H., Nielsen, J., Kjeldsen, J., Knudsen, T., Friedman, S. & Norgard, B., 2017, In : Inflammatory Bowel Diseases.

Research output: Contribution to journalJournal articleResearchpeer-review

Anti-TNF-α Use During the Third Trimester of Pregnancy in Women with Moderate-severe Inflammatory Bowel Disease and the Risk of Preterm Birth and Low Birth Weight

Kammerlander, H., Nielsen, J., Knudsen, T., Kjeldsen, J., Friedman, S. & Norgard, B. M., 2017, In : Inflammatory Bowel Diseases. 23, 11, p. 1916–1923

Research output: Contribution to journalJournal articleResearchpeer-review

Premature Birth
Third Pregnancy Trimester
Low Birth Weight Infant
Inflammatory Bowel Diseases
Tumor Necrosis Factor-alpha
116 Downloads (Pure)
Open Access
File
Hirschsprung Disease
Serotonin Uptake Inhibitors
Cohort Studies
Mothers
Newborn Infant
143 Downloads (Pure)

Patients with inflammatory bowel disease have increased risk of autoimmune and inflammatory diseases

Halling, M. L., Kjeldsen, J., Knudsen, T., Nielsen, J. & Hansen, L. K., 7. Sep 2017, In : World Journal of Gastroenterology. 23, 33, p. 6137-6146

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Inflammatory Bowel Diseases
Ulcerative Colitis
Crohn Disease
Scleritis
Polymyalgia Rheumatica

S-25-hydroxyvitamin D and C3-epimers in pregnancy and infancy: An Odense child cohort study

Dreier Mydtskov, N., Lykkedegn, S., Fruekilde, P. B. N., Nielsen, J., Barington, T. & Christesen, H. T., 2017, In : Clinical Biochemistry. 50, 18, p. 988-996

Research output: Contribution to journalJournal articleResearchpeer-review

Vitamin D
Cohort Studies
Mothers
Maternal Age
Liquid chromatography

The Association Between Maternal Chronic Inflammatory Bowel Disease and Long-term Health Outcomes in Children - A Nationwide Cohort Study

Jølving, L. R., Nielsen, J., Beck-Nielsen, S. S., Nielsen, R. G., Friedman, S., Kesmodel, U. S. & Nørgård, B. M., 2017, In : Inflammatory Bowel Diseases. 23, 8, p. 1440-1446

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Cohort Studies
Mothers
Health
Crohn Disease

The Effect of Disease Activity on Birth Outcomes in a Nationwide Cohort of Women with Moderate to Severe Inflammatory Bowel Disease

Kammerlander, H., Nielsen, J., Kjeldsen, J., Knudsen, T., Friedman, S. & Nørgård, B., 2017, In : Inflammatory Bowel Diseases. 23, 6, p. 1011-1018

Research output: Contribution to journalJournal articleResearchpeer-review

Inflammatory Bowel Diseases
Premature Birth
Low Birth Weight Infant
Tumor Necrosis Factor-alpha
Confidence Intervals
Mothers
Health
Serum
25-hydroxyvitamin D
2016

Early pregnancy angiogenic markers and spontaneous abortion: an Odense Child Cohort study

Andersen, L. B., Dechend, R., Karumanchi, S. A., Nielsen, J., Joergensen, J. S., Jensen, T. K. & Christesen, H. B. T., 2016, In : American Journal of Obstetrics & Gynecology. 215, 5, p. 594.e1-594.e11

Research output: Contribution to journalJournal articleResearchpeer-review

Spontaneous Abortion
Cohort Studies
Angiogenesis Inducing Agents
Mothers
Confidence Intervals

Prediction of preeclampsia with angiogenic biomarkers: Results from the prospective Odense Child Cohort

Andersen, L. B., Dechend, R., Jørgensen, J. S., Møller Luef, B., Nielsen, J., Barington, T. & Christesen, H. B. T., 2016, In : Hypertension in Pregnancy. 35, 3, p. 405-419

Research output: Contribution to journalJournal articleResearchpeer-review

Pre-Eclampsia
Area Under Curve
ROC Curve
Pregnant Women
Logistic Models
Mothers
Population
Maternal Age
Denmark
Lung Diseases
114 Downloads (Pure)

The Danish Neuro-Oncology Registry: establishment, completeness and validity

Hansen, S., Nielsen, J., Laursen, R. J., Rasmussen, B. K., Nørgård, B. M., Gradel, K. O. & Sørensen, R. G., 2016, In : BMC Research Notes. 9, 7 p., 425.

Research output: Contribution to journalJournal articleResearchpeer-review

Open Access
File
Oncology
Registries
Databases
Pathology
Glioma

The incidence of Crohn's disease and ulcerative colitis since 1995 in Danish children and adolescents

Larsen, M. D., Eggebrecht Baldal, M., Nielsen, R. G., Nielsen, J., Lund, K. & Nørgård, B. M., Sep 2016, In : Scandinavian Journal of Gastroenterology. 51, 9, p. 1100-5

Research output: Contribution to journalJournal articleResearchpeer-review

Ulcerative Colitis
Crohn Disease
Incidence
Denmark
Survival Analysis

Use of Anti-TNFα Agents and Time to First-time Surgery in Paediatric Patients with Ulcerative Colitis and Crohn’s Disease

Larsen, M. D., Qvist, N., Nielsen, J., Kjeldsen, J., Nielsen, R. G. & Nørgård, B. M., 22. Jan 2016, In : Journal of Crohn's and Colitis. 10, 6, p. 650-656

Research output: Contribution to journalJournal articleResearchpeer-review

Ulcerative Colitis
Crohn Disease
Pediatrics
Confidence Intervals
Registries
2015

Can family history and cord blood IgE predict sensitization and allergic diseases up to adulthood?

Borrits Pagh Nissen, S., Fomsgaard Kjær, H., Høst, A., Nielsen, J. & Halken, S., 2015, In : Pediatric Allergy and Immunology. 26, 1, p. 42-48

Research output: Contribution to journalJournal articleResearchpeer-review

Fetal Blood
Physical Examination
Interviews
Vascular Endothelial Growth Factor Receptor-1
Pre-Eclampsia
Hemolysis
Platelet Count
Area Under Curve

Postoperative Use of Anti-TNF-α Agents in Patients with Crohn's Disease and Risk of Reoperation-A Nationwide Cohort Study

Kjeldsen, J., Nielsen, J., Larsen, M. D., Qvist, N. & Nørgård, B. M., 8. Dec 2015, In : Inflammatory Bowel Diseases. 22, 3, p. 599–606

Research output: Contribution to journalJournal articleResearchpeer-review

Proxy
Reoperation
Crohn Disease
Cohort Studies
Confidence Intervals
Spontaneous Abortion
First Pregnancy Trimester
Serum
Mothers
Second Pregnancy Trimester
2014

Heritability of clubfoot: a twin study

Engell, V., Nielsen, J., Damborg, F., Kyvik, K. O., Thomsen, K., Pedersen, N. W., Andersen, M. & Overgaard, S., Feb 2014, In : Journal of Children's Orthopaedics. 8, 1, p. 37-41

Research output: Contribution to journalJournal articleResearchpeer-review

Clubfoot
Twin Studies
Equidae
Denmark
Registries

The incidence of ulcerative colitis (1995-2011) and Crohn's disease (1995-2012) - Based on nationwide Danish registry data

Nørgård, B. M., Nielsen, J., Fonager, K., Kjeldsen, J., Jacobsen, B. A. & Qvist, N., 1. Oct 2014, In : Journal of Crohn's and Colitis. 8, 10, p. 1274-80

Research output: Contribution to journalJournal articleResearchpeer-review

Ulcerative Colitis
Crohn Disease
Registries
Incidence
North America
2013
Crohn Disease
Cohort Studies
Reoperation
Registries
Odds Ratio

The natural course of sensitization and allergic diseases from childhood to adulthood

Nissen, S. P., Kjaer, H. F., Høst, A., Nielsen, J. & Halken, S., 2013, In : Pediatric Allergy and Immunology. 24, 6, p. 549-55

Research output: Contribution to journalJournal articleResearchpeer-review

Natural History
Population
Cohort Studies
Prospective Studies
2012

Dansk Neuro Onkologisk Register

Translated title of the contribution: Danish Neuro-Oncology RegistryHansen, S., Green, A., Nielsen, J., Haugaard, M., Laursen, R. J., Schultz, H. P., Rasmussen, B. K., Broholm, H., Andersen, P., Kosteljanetz, M. & styregruppen for DNOR, 2012, In : Ugeskrift for Laeger. 174, 42, p. 2558 1 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Population
Ulcerative Colitis
Cohort Studies
Tumor Necrosis Factor-alpha
2011
Neck Pain
Low Back Pain
Population

Genetic epidemiology of Scheuermann's disease

Damborg, F., Engell, V., Nielsen, J., Kyvik, K. O., Andersen, M. Ø. & Thomsen, K., 2011, In : Acta Orthopaedica (Print Edition). 82, 5, p. 602-5 4 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Scheuermann Disease
2010

Analyzing multivariate survival data using composite likelihood and flexible parametric modeling of the hazard functions

Nielsen, J. & Parner, E., 10. Sep 2010, In : Statistics in Medicine. 29, 20, p. 2126-36 11 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Multivariate Survival Data
Composite Likelihood
Parametric Modeling
Frailty
Hazard Function
2009

Heritability of spinal pain and consequences of spinal pain: a comprehensive genetic epidemiologic analysis using a population-based sample of 15,328 twins ages 20-71 years

Hartvigsen, J., Nielsen, J., Kyvik, K. O., Fejer, R., Vach, W., Iachine, I. & Leboeuf-Yde, C., 15. Oct 2009, In : Arthritis & Rheumatism. 61, 10, p. 1343-51 8 p.

Research output: Contribution to journalJournal articleResearchpeer-review

Population
Neck Pain
Dizygotic Twins
Pensions
Sick Leave
Population
Neck Pain
Low Back Pain
Leg
Cross-Sectional Studies