Åsa Hallqvist Everhov

About me
Publications
CV
Public outreach and news

About me

Colorectal surgeon, South General Hospital
Senior researcher, KEP IBD Ola Olén, Clinical Epidemiology Division, Karolinska Institutet Solna
Senior researcher, Gastrointestinal kirurgi, KI SÖS

Articles

Article: JOURNAL OF CROHN'S AND COLITIS. 2024;:jjae165
Labor Market Participation and Income in Patients With Inflammatory Bowel Disease Onset Before Young Adulthood-The Role of Disease Severity and Mental Health
Rasmussen J; Norgard BM; Boggild H; Qvist N; Everhov AH; Malmborg P; Nielsen RG; Brund RBK; Fonager K
Article: AMERICAN JOURNAL OF GASTROENTEROLOGY. 2024;119(10):2122-2125
Economic Burden of Eosinophilic Esophagitis: A Nationwide Cost-of-Illness Study
Bozorg SR; Soderling J; Marild K; Garber JJ; Uchida A; Neovius M; Ludvigsson JF; Everhov AH
Article: WORLD JOURNAL OF SURGERY. 2024;48(7):1739-1748
Stoma-related complications and quality-of-life assessment: A cross-sectional study with patients from Ethiopia and Sweden
Eklov K; Shiferaw A; Rosen A; Bekele S; Ayalew B; Bringman S; Nygren J; Lofgren J; Everhov AH
Article: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2024;59(9):1122-1133
Impact of inflammatory bowel disease on the risk of acute coronary syndrome: A Swedish Nationwide Cohort Study
Eriksson C; Sun J; Bryder M; Broms G; Everhov AH; Forss A; Jernberg T; Ludvigsson JF; Olen O
Article: CANCER CAUSES AND CONTROL. 2024;35(2):367-376
Combined associations of a healthy lifestyle and body mass index with colorectal cancer recurrence and survival: a cohort study
Barot S; Rantanen P; Nordenvall C; Lindforss U; Everhov AH; Larsson SC; Lindblom A; Liljegren A
Article: CLINICAL GASTROENTEROLOGY AND HEPATOLOGY. 2023;21(12):3132-3142
Increasing Risk of Lymphoma Over Time in Crohn's Disease but Not in Ulcerative Colitis: A Scandinavian Cohort Study
Olen O; Smedby KE; Erichsen R; Pedersen L; Halfvarson J; Hallqvist-Everhov A; Askling J; Ekbom A; Sachs MC; Sorensen HT; Ludvigsson JF
Article: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2023;58(7):692-703
Increasing healthcare costs in inflammatory bowel disease 2007-2020 in Sweden
Everhov A; Soederling J; Befrits G; Khalili H; Broems G; Neovius M; Askling J; Halfvarson JF; Ludvigsson J; Olen O; SWIBREG SG
Article: TRIALS. 2023;24(1):575
PHaLIR: prevent hernia after loop ileostomy reversal-a study protocol for a randomized controlled multicenter study
Eklov K; Bringman S; Lofgren J; Nygren J; Everhov AH
Article: DIGESTIVE DISEASES AND SCIENCES. 2023;68(7):3119-3128
Ustekinumab Versus Anti-tumour Necrosis Factor Alpha Agents as Second-Line Biologics in Crohn's Disease
Eriksson C; Soderling J; Karlqvist S; Broms G; Everhov AH; Bergemalm DF; Ludvigsson J; Olen O; Halfvarson J
Journal article: JOURNAL OF CLINICAL ONCOLOGY. 2023;41(16_suppl):3609
Combined associations of a healthy lifestyle and body mass index on colorectal cancer recurrence and survival: A cohort study.
Barot S; Rantanen P; Nordenvall C; Lindforss U; Hallqvist Everhov A; Larsson S; Lindblom A; Liljegren A
Article: JOURNAL OF PEDIATRIC GASTROENTEROLOGY AND NUTRITION. 2022;75(4):480-484
Colorectal Cancer in Childhood-onset Inflammatory Bowel Disease: A Scandinavian Register-based Cohort Study, 1969-2017
Everhov AH; Ludvigsson JF; Jaras J; Erichsen R; Pedersen L; Halfvarson J; Askling J; Ekbom A; Sorensen HT; Olen O
Article: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2022;56(7):1168-1182
Colorectal cancer in elderly-onset inflammatory bowel disease: A 1969-2017 Scandinavian register-based cohort study
Everhov AH; Erichsen R; Jaras J; Pedersen L; Halfvarson J; Askling J; Ekbom A; Ludvigsson JF; Sorensen HT; Olen O
Article: INFLAMMATORY BOWEL DISEASES. 2022;28(9):1301-1308
Primary Versus Staged Reconstruction and Risk of Surgical Failure in Patients With Ulcerative Colitis: a Nation-wide Cohort Study
Westberg K; Olen O; Soderling J; Bengtsson J; Ludvigsson JF; Everhov AH; Myrelid P; Nordenvall C
Article: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2022;56(6):1007-1017
Earnings during adulthood in patients with childhood-onset inflammatory bowel disease: A nationwide population-based cohort study
Malmborg P; Everhov AH; Soderling J; Ludvigsson JF; Bruze G; Olen O
Article: COLORECTAL DISEASE. 2022;24(8):925-932
Colon cancer treatment in Sweden during the COVID-19 pandemic: A nationwide register-based study
Eklov K; Nygren J; Bringman S; Lofgren J; Sjovall A; Nordenvall C; Everhov AH
Article: INFLAMMATORY BOWEL DISEASES. 2022;28(8):1160-1168
Probability of Stoma in Incident Patients With Crohn's Disease in Sweden 2003-2019: A Population-based Study
Everhov AH; Kalman TD; Soderling J; Nordenvall C; Halfvarson J; Ekbom A; Ludvigsson JF; Olen O; Myrelid P
Article: JAMA NETWORK OPEN. 2022;5(5):e2211065
Trends in Treatment of Colorectal Cancer and Short-term Outcomes During the First Wave of the COVID-19 Pandemic in Sweden
Eklov K; Nygren J; Bringman S; Lofgren J; Sjovall A; Nordenvall C; Everhov AH
Article: CLINICAL GASTROENTEROLOGY AND HEPATOLOGY. 2022;20(5):1068-1076.e6
Work Loss in Patients With Celiac Disease: A Population-based Longitudinal Study
Bozorg SR; Soderling J; Everhov AH; Lebwohl B; Green PHR; Neovius M; Ludvigsson JF; Marild K
Article: COLORECTAL DISEASE. 2022;24(4):470-483
Tumour necrosis factor inhibitors in Crohn's disease and the effect on surgery rates
Eberhardson M; Myrelid P; Soderling JK; Ekbom A; Everhov AH; Hedin CRH; Neovius M; Ludvigsson JF; Olen O
Article: ACTA ANAESTHESIOLOGICA SCANDINAVICA. 2022;66(3):365-374
An observational study of intermediate- or high-dose thromboprophylaxis for critically ill COVID-19 patients
Jonmarker S; Litorell J; Dahlberg M; Stackelberg O; Everhov AH; Soderberg M; Rubenson-Wahlin R; Gunther M; Martensson J; Hollenberg J; Joelsson-Alm E; Cronhjort M
Article: INFECTIOUS DISEASES. 2021;53(7):513-520
Central pulmonary embolism in patients with Covid-19
Nordberg M; Bankler S; Everhov AH; Saraste D
Article: JOURNAL OF CROHN'S AND COLITIS. 2021;15(6):980-987
Women's Earnings are more Affected by Inflammatory Bowel Disease than Men's: A Register-Based Swedish Cohort Study
Everhov AH; Bruze G; Soderling J; Askling J; Halfvarson J; Westberg K; Malmborg P; Nordenvall C; Ludvigsson JF; Olen O
Article: SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY. 2021;56(4):410-421
Capturing biologic treatment for IBD in the Swedish Prescribed Drug Register and the Swedish National Patient Register - a validation study
Broms G; Soderling J; Sachs MC; Halfvarson J; Myrelid P; Ludvigsson JF; Everhov AH; Olen O
Article: DISEASES OF THE COLON AND RECTUM. 2021;64(2):171-180
Perirenal Fat Surface Area and Oncologic Outcome in Elective Colon Cancer Surgery
Eckberg SE; Dahlberg MJA; Hagopian OSD; Farahnak P; Sandblom GK; Nordenvall CAM; Everhov AH
Article: FRONTIERS IN SURGERY. 2021;8:724026
Postoperative Pain After Robot-Assisted Laparoscopic Ventral Hernia Repair
Lindstrom P; Rietz G; Everhov AH; Sandblom G
Article: CRITICAL CARE. 2020;24(1):653
Dosing of thromboprophylaxis and mortality in critically ill COVID-19 patients
Jonmarker S; Hollenberg J; Dahlberg M; Stackelberg O; Litorell J; Everhov AH; Jarnbert-Pettersson H; Soderberg M; Grip J; Schandl A; Gunther M; Cronhjort M
Article: BRITISH JOURNAL OF SURGERY. 2020;107(11):1529-1538
Decrease in primary but not in secondary abdominal surgery for Crohn's disease: nationwide cohort study, 1990-2014
Kalman TD; Everhov AH; Nordenvall C; Sachs MC; Halfvarson J; Ekbom A; Ludvigsson JE; Myrelid P; Olen O
Article: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2020;52(4):655-668
Healthcare use, work loss and total costs in incident and prevalent Crohn's disease and ulcerative colitis: results from a nationwide study in Sweden
Khalili H; Everhov AH; Halfvarson J; Ludvigsson JF; Askling J; Myrelid P; Soderling J; Olen O; Neovius M
Article: AMERICAN JOURNAL OF GASTROENTEROLOGY. 2020;115(8):1253-1263
Costs and Use of Health Care in Patients With Celiac Disease: A Population-Based Longitudinal Study
Marild K; Soderling J; Bozorg SR; Everhov AH; Lebwohl B; Green PHR; Neovius M; Ludvigsson JF
Article: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2020;52(1):143-154
Inflammatory bowel disease and pancreatic cancer: a Scandinavian register-based cohort study 1969-2017
Everhov AH; Erichsen R; Sachs MC; Pedersen L; Halfvarson J; Askling J; Ekbom A; Ludvigsson JF; Sorensen HT; Olen O
Article: INTERNATIONAL JOURNAL OF COLORECTAL DISEASE. 2020;35(5):887-895
Hernia at the stoma site after loop ileostomy reversal
Eklov K; Viktorsson FZ; Frosztega E; Bringman S; Nygren J; Everhov AH
Article: SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY. 2020;55(4):430-435
The use of ICD codes to identify IBD subtypes and phenotypes of the Montreal classification in the Swedish National Patient Register
Shrestha S; Olen O; Eriksson C; Everhov AH; Myrelid P; Visuri I; Ludvigsson JF; Schoultz I; Montgomery S; Sachs MC; Halfvarson J; Olsson M; Hjortswang H; Bengtsson J; Strid H; Andersson M; Jaghult S; Eberhardson M; Nordenvall C; Bjork J; Fagerberg UL; Rejler M; Grip O; Karling P; Block M; Angenete E; Hellstrom PM; Gustaysson A
Article: CLINICAL EPIDEMIOLOGY. 2020;12:273-285
Work Loss in Relation to Pharmacological and Surgical Treatment for Crohn's Disease: A Population-Based Cohort Study
Everhov A; Sachs M; Ludvigsson J; Khalili H; Askling J; Neovius M; Myrelid P; Halfvarson J; Nordenvall C; Soderling J; Olen O
Article: DIGESTIVE SURGERY. 2020;37(6):456-462
Long-Term Results after Anastomotic Leakage following Rectal Cancer Surgery: A Comparison of Treatment with Endo-Sponge and Transanal Irrigation
Wereen A; Dahlberg M; Heinius G; Pieniowski E; Saraste D; Eklov K; Nygren J; Pekkari K; Everhov AH
Article: BMC MEDICAL INFORMATICS AND DECISION MAKING. 2019;19(1):217
Validating surgical procedure codes for inflammatory bowel disease in the Swedish National Patient Register
Forss A; Myrelid P; Olen O; Everhov AH; Nordenvall C; Halfvarson J; Ludvigsson JF
Article: THE JOURNAL OF THE ROYAL STATISTICAL SOCIETY, SERIES C (APPLIED STATISTICS). 2019;68(5):1431-1446
Ensemble prediction of time-to-event outcomes with competing risks: a case-study of surgical complications in Crohn's disease
Sachs MC; Discacciati A; Everhov AH; Olen O; Gabriel EE
Article: INFLAMMATORY BOWEL DISEASES. 2019;25(7):1237-1247
Work Loss Before and After Diagnosis of Crohn's Disease
Everhov AH; Khalili H; Askling J; Myrelid P; Ludvigsson JF; Halfvarson J; Nordenvall C; Neovius M; Soderling J; Olen O
Article: SCANDINAVIAN JOURNAL OF GASTROENTEROLOGY. 2019;54(1):55-63
Changes in inflammatory bowel disease subtype during follow-up and over time in 44,302 patients
Everhov AH; Sachs MC; Malmborg P; Nordenvall C; Myrelid P; Khalili H; Elmberg M; Ekbom A; Askling J; Jakobsson G; Halfvarson J; Ludvigsson JF; Olen O
Article: INTERNATIONAL JOURNAL OF COLORECTAL DISEASE. 2019;34(1):181-183
Retained sex toys: an increasing and possibly preventable medical condition
Dahlberg M; Nordberg M; Pieniowski E; Bostroem L; Sandblom G; Hallqvist-Everhov A
Article: COLORECTAL DISEASE. 2018;20(12):1078-1087
Perirenal fat surface area as a risk factor for perioperative difficulties and 30-day postoperative complications in elective colon cancer surgery
der Hagopian O; Dahlberg M; Heinius G; Nordberg J; Gustafsson J; Nordenvall C; Sandblom G; Farahnak P; Everhov AH
Article: JOURNAL OF CROHN'S AND COLITIS. 2018;12(12):1418-1428
Sick Leave and Disability Pension in Prevalent Patients With Crohn's Disease
Everhov AH; Khalili H; Askling J; Myrelid P; Ludvigsson JF; Halfvarson J; Nordenvall C; Soderling J; Olen O; Neovius M
Article: GASTROENTEROLOGY. 2018;154(3):518-528.e15
Incidence and Treatment of Patients Diagnosed With Inflammatory Bowel Diseases at 60 Years or Older in Sweden
Everhov AH; Halfvarson J; Myrelid P; Sachs MC; Nordenvall C; Soderling J; Ekbom A; Neovius M; Ludvigsson JF; Askling J; Olen O
Article: JOURNAL OF CROHN'S AND COLITIS. 2018;12(2):157-166
Surgical Treatment in Childhood-onset Inflammatory Bowel Disease-A Nationwide Register-based Study of 4695 Incident Patients in Sweden 2002-2014
Nordenvall C; Rosvall O; Bottai M; Everhov AH; Malmborg P; Smedby KE; Ekbom A; Askling J; Ludvigsson JF; Myrelid P; Olen O
Article: JOURNAL OF CANCER SURVIVORSHIP. 2016;10(3):514-523
Lost workdays in uterine cervical cancer survivors compared to the general population: impact of treatment and relapse
Everhov AH; Ekberg S; Hirschberg AL; Bergmark K; Radestad AF; Glimelius I; Smedby KE
Article: JOURNAL OF SEXUAL MEDICINE. 2016;13(3):413-424
Serum Androgen Levels and Sexual Function Before and One Year After Treatment of Uterine Cervical Cancer: A Pilot Study
Everhov AH; Radestad AF; Nyberg T; Smedby KE; Bergmark K; Hirschberg AL
Article: MENOPAUSE. 2015;22(6):633-639
Hormone therapy after uterine cervical cancer treatment: a Swedish population-based study
Everhov AH; Nyberg T; Bergmark K; Citarella A; Radestad AF; Hirschberg AL; Smedby KE
Article: ACTA OBSTETRICIA ET GYNECOLOGICA SCANDINAVICA. 2014;93(9):949-953
Anti-Mullerian hormone in premenopausal women following treatment of uterine cervical cancer
Everhov AH; Bergmark K; Smedby KE; Hirschberg AL; Radestad AF
Article: LAKARTIDNINGEN. 2007;104(36):2507-2508
[QF-PCR or karyotyping in amniocentesis most often not the woman's decision. Difficult to give basis for an informed choice].
Everhov AH; Nordenskjöld M; Björklund U; Persson E
Article: EUROPEAN JOURNAL OF HUMAN GENETICS. 2003;11(1):89-92
Cryptic subtelomeric 6p deletion in a girl with congenital malformations and severe language impairment
Anderlid BM; Schoumans J; Hallqvist Å; Ståhl Y; Wallin A; Blennow E; Nordenskjöld M
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All other publications

Conference publication: JOURNAL OF CLINICAL ONCOLOGY. 2023;41(16)
Combined associations of a healthy lifestyle and body mass index on colorectal cancer recurrence and survival: A cohort study
Barot S; Rantanen P; Nordenvall C; Lindforss U; Everhov AH; Larsson S; Lindblom A; Liljegren A
Editorial comment: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2022;56(9):1423-1424
Editorial: colorectal cancer in elderly-onset IBD-what is the risk? Authors' reply
Everhov AH; Olen O
Published conference paper: DISEASES OF THE COLON AND RECTUM. 2021;64(3):301-312
Restorative Surgery Is More Common in Ulcerative Colitis Patients With a High Income: A Population-Based Study
Nordenvall C; Westberg K; Soderling J; Everhov AH; Halfvarson J; Ludvigsson JF; Myrelid P; Olen O
Letter: ANZ JOURNAL OF SURGERY. 2020;90(9):1823-1824
Re: Entrapment is an essential feature of sigmoid volvulus
Dahlberg M; Everhov AH
Editorial comment: ANZ JOURNAL OF SURGERY. 2020;90(9):1540-1541
Entrapment is an essential feature of sigmoid volvulus
Dahlberg M; Everhov AH
Letter: JAMA SURGERY. 2020;155(8):788
Decompressing Stoma vs Stent in Left-Sided Obstructive Colon Cancer
Hallgvist-Everhov A; Asplund J; Dahlberg M
Letter: JAMA PEDIATRICS. 2019;173(3):290-291
Risk of Appendicitis in IgE-Mediated Allergy
Dahlberg M; Everhov AH
Letter: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2018;47(10):1420-1421
Letter: phenotype and natural history of elderly onset inflammatory bowel disease
Everhov AH; Ludvigsson JF; Olen O
Conference publication: JOURNAL OF CROHN'S AND COLITIS. 2018;12(supplement_1):s60-s61
DOP042 Need for ileocaecal resections, but not ileo-colic re-resections, has decreased: a nationwide study of temporal trends in Crohn surgery in Sweden 1990–2014
Kalman D; Nordenvall C; Everhov AH; Sachs MC; Ludvigsson JF; Ekbom A; Myrelid P; Olén O
Conference publication: JOURNAL OF CROHN'S AND COLITIS. 2018;12(suppl_1):s11-s12
OP016 Need for primary abdominal surgery, but not repeated surgery, has decreased: a nationwide study of temporal trends in Crohn surgery in Sweden 1990–2014
Kalman D; Nordenvall C; Everhov AH; Ludvigsson JF; Sachs MC; Ekbom A; Olén O; Myrelid P
Conference publication: GASTROENTEROLOGY. 2018;154(6):S5
HEALTH CARE USE, WORK LOSS, AND TOTAL COSTS IN INCIDENT AND PREVELANT ULCERATIVE COLITIS: RESULTS FROM A NATIONWIDE STUDY IN SWEDEN
Khalili H; Soderling J; Everhov AH; Halfvarson J; Ludvigsson JF; Askling J; Myrelid P; Olen O; Neovius M
Editorial comment: ALIMENTARY PHARMACOLOGY AND THERAPEUTICS. 2017;45(10):1369-1370
Editorial: importance of definition of inflammatory bowel disease and an increased incidence in children
Everhov AH; Olen O; Ludvigsson JF
Thesis / dissertation: 2015
Hormonal consequences, replacement therapy, and lost workdays after cervical cancer treatment
Hallqvist Everhov, Åsa

Employments

Affiliated to Research, Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, 2024-2025
Affiliated to Research, Department of Medicine, Karolinska Institutet, 2023-2025
Affiliated to Research, Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, 2023-2025

Degrees and Education

Docent, Karolinska Institutet, 2020
Degree Of Doctor Of Philosophy, Department of Oncology-Pathology, Karolinska Institutet, 2016
University Medical Degree, Karolinska Institutet, 2001

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