Viktor H. Ahlqvist

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Publikationer
CV
Populärvetenskap och samverkan

Om mig

Läs mer om mig på min engelska sida: https://ki.se/en/people/viktor-ahlqvist

Artiklar

Journal article: BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY. 2025
Mode of Delivery and Request for Caesarean Section in Birthing People With Mental Disorders: A Register-Based Total Population Study.
Kazakova O; Kosidou K; Cedic S; Granfors M; Ahlqvist VH; Magnusson C
Journal article: AMERICAN JOURNAL OF PREVENTIVE MEDICINE. 2025;:108128
Associations of adolescent BMI and physical fitness with cardiovascular health in middle age: a population-based prospective study of Swedish men.
Herraiz-Adillo Á; Ahlqvist VH; Hedman K; Higueras-Fresnillo S; Hagström E; de Smidt MF; Daka B; Lenander C; Olsson A; Berglind D; Östgren CJ; Rådholm K; Ortega FB; Henriksson P
Article: MAYO CLINIC PROCEEDINGS: DIGITAL HEALTH. 2025;3(3):100251
Youth Uptake of Digital Sexual and Reproductive Health Services Across Sociodemographic Groups (2018-2022): A Total Population Study from Stockholm, Sweden.
Hellsten L; Ahlqvist VH; Nielsen AM; Brandén G; Ekström AM; Kosidou K
Article: JOURNAL OF INTERNAL MEDICINE. 2025;298(3):200-213
Overstated association between adolescent physical fitness and adulthood depression risk due to familial factors
Ballin M; Ekblom O; Nordstrom A; Ahlqvist VH; Nordstrom P
Journal article: EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY. 2025;:zwaf535
Cardiorespiratory fitness in adolescence and premature mortality: widespread bias identified using negative control outcomes and sibling comparisons Reply
Ballin M; Nordstrom A; Ahlqvist VH
Journal article: BRITISH JOURNAL OF GENERAL PRACTICE. 2025;:BJGP.2025.0092
First trimester antidepressant use and miscarriage: a comprehensive analysis in the Clinical Practice Research Datalink GOLD.
Martin FZ; Madley-Dowd PC; Ahlqvist VH; Sharp GC; Easey KE; Lee BK; Merriel A; Rai D; Forbes H
Article: BMJ MEDICINE. 2025;4(1):e001313
Cardiorespiratory fitness in adolescence and risk of type 2 diabetes in late adulthood in one million Swedish men: nationwide sibling controlled cohort study
Ballin M; Ahlqvist VH; Berglind D; Brunstroem M; Herraiz-Adillo A; Henriksson P; Neovius M; Ortega FB; Nordstrom A; Nordstrom P
Article: JOURNAL OF INTERNAL MEDICINE. 2025;298(4):349-360
Hospital-treated infections and the risk and prognosis of amyotrophic lateral sclerosis: A population-based study
Hu Y; Chourpiliadis C; Ingre C; Ahlqvist VH; Sun J; Song H; Pawitan Y; Piehl F; Fang F
Article: JOURNAL OF CLINICAL EPIDEMIOLOGY. 2025;184:111820
Cross-site imputation can recover missing variables in federated multicenter studies
Thiesmeier R; Madley-Dowd P; Orsini N; Ahlqvist VH
Journal article: EUROPEAN JOURNAL OF PREVENTIVE CARDIOLOGY. 2025;:zwaf267
Cardiorespiratory fitness in adolescence and premature mortality: widespread bias identified using negative control outcomes and sibling comparisons
Ballin M; Nordstrom A; Nordstrom P; Ahlqvist VH
Article: PLOS MEDICINE. 2025;22(5):e1004597
Adolescent cardiorespiratory fitness and risk of cancer in late adulthood: A nationwide sibling-controlled cohort study in Sweden
Ballin M; Berglind D; Henriksson P; Neovius M; Nordstrom A; Ortega FB; Sillanpaa E; Nordstrom P; Ahlqvist VH
Article: BMC PEDIATRICS. 2025;25(1):298
Socioeconomic disparities in organized sports participation and physical activity among a population based sample of preschool children: a cross-sectional study
Wilen C; Ahlqvist VH; Chen C; Neovius M; Magnusson C; Henriksson P; Dahlen M; Sander E; Berglind D
Journal article: BRITISH JOURNAL OF SPORTS MEDICINE. 2025;59(3):139-140
Polygenic risk analysis in physical activity and health: why are the same results interpreted differently?
Ahlqvist VH; Ballin M
Journal article: AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY. 2025;232(2):e54-e55
Defining mode of delivery as "instrumental vaginal delivery"
Zweygberg AL; Ahlqvist VH; Magnusson C
Article: NATURE COMMUNICATIONS. 2024;15(1):9640
Antiseizure medication use during pregnancy and children's neurodevelopmental outcomes.
Madley-Dowd P; Ahlqvist VH; Forbes H; Rast JE; Martin FZ; Zhong C; Barry C-JS; Berglind D; Lundberg M; Lyall K; Newschaffer CJ; Tomson T; Davies NM; Magnusson C; Rai D; Lee BK
Article: ECLINICALMEDICINE. 2024;77:102877
A novel clinical prediction model for hip fractures: a development and validation study in the total population of Sweden
Nordstrom P; Ahlqvist VH; Ballin M; Nordstrom A
Article: MEDRXIV. 2024
Antidepressant use during pregnancy and birth outcomes: analysis of electronic health data from the UK, Norway, and Sweden.
Martin FZ; Ahlqvist VH; Madley-Dowd P; Lundberg M; Cohen JM; Furu K; Rai D; Forbes H; Easey K; Håberg SE; Sharp GC; Magnusson C; Magnus MC
Article: JOURNAL OF NEURODEVELOPMENTAL DISORDERS. 2024;16(1):58
Changes in the prevalence of intellectual disability among 10-year-old children in Sweden during 2011 through 2021: a total population study
Morinaga M; Ahlqvist VH; Lundberg M; Hollander A-C; Rai D; Magnusson C
Article: ACTA PSYCHIATRICA SCANDINAVICA. 2024;150(4):223-233
Sex differences in self-harm and suicide in young autistic adults
Hull L; Stark I; Lundberg M; Ahlqvist VH; Nordstrom SI; Ohlis A; Hadlaczky G; Rai D; Magnusson C
Article: LANCET PUBLIC HEALTH. 2024;9(10):e776-e786
Adverse pregnancy outcomes attributable to overweight and obesity across maternal birth regions: a Swedish population-based cohort study
Shirvanifar M; Ahlqvist VH; Lundberg M; Kosidou K; Herraiz-Adillo A; Berglind D; Magnusson C; Henriksson P
Journal article: JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION. 2024;332(4):339-340
Acetaminophen Use During Pregnancy-Reply
Ahlqvist VH; Gardner RM; Lee BK
Article: JOURNAL OF NEUROLOGY NEUROSURGERY AND PSYCHIATRY. 2024;95(8):693-703
First-trimester use of antiseizure medications and the risk of miscarriage: a population-based cohort study
Forbes H; Madley-Dowd P; Ahlqvist V; Campbell J; Davies NM; Liebling R; Lyall K; Newschaffer C; Rast J; Tomson T; Zhong C; Magnusson C; Rai D; Lee BK
Article: SCIENTIFIC REPORTS. 2024;14(1):15024
Life's Essential 8 is inversely associated with high-sensitivity C-reactive protein
Hebib L; Herraiz-Adillo A; Higueras-Fresnillo S; Berglind D; Daka B; Wennberg P; Hagstrom E; Lenander C; Ahlqvist VH; Ostgren CJ; Radholm K; Henriksson P
Article: BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY. 2024;131(8):1136-1145
Body mass index and weight gain in pregnancy and cardiovascular health in middle age: A cohort study
Waagaard L; Herraiz-Adillo A; Ahlqvist VH; Higueras-Fresnillo S; Berglind D; Wennberg P; Daka B; Lenander C; Sundstrom J; Ostgren CJ; Radholm K; Henriksson P
Article: AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY. 2024;231(1):107.e1-107.e19
Mode of delivery and subsequent self-perceived sexual life satisfaction: a population-based cohort study
Zweygberg AL; Martin FZ; Brynedal B; Lindholm ES; Kosidou K; Ahlqvist VH; Magnusson C
Article: PREVENTIVE MEDICINE. 2024;183:107969
The influence of the COVID-19 pandemic on physical activity in Stockholm County - Evidence from time series models of smartphone measured daily steps data spanning over 3 years
Zhou M; Gebreslassie M; Leon APD; Tynelius P; Ahlqvist VH; Dahlen M; Berglind D; Lager A; Brynedal B
Article: BMC PUBLIC HEALTH. 2024;24(1):1455
Associations of psychological factors with atherosclerosis and cardiovascular health in middle-age: the population-based Swedish CArdioPulmonary bioImage study (SCAPIS)
Higueras-Fresnillo S; Herraiz-Adillo A; Ahlqvist VH; Oberg R; Lenander C; Wennberg P; Wangdahl J; Berglind D; Daka B; Oestgren CJ; Radholm K; Henriksson P
Article: JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION. 2024;331(14):1205-1214
Acetaminophen Use During Pregnancy and Children's Risk of Autism, ADHD, and Intellectual Disability
Ahlqvist VH; Sjoeqvist H; Dalman C; Karlsson H; Stephansson O; Johansson S; Magnusson C; Gardner RM; Lee BK
Article: QUALITY OF LIFE RESEARCH. 2024;33(4):1003-1014
Life's Essential 8 in relation to self-rated health and health-related quality of life in a large population-based sample: the SCAPIS project
Herraiz-Adillo A; Ahlqvist VH; Daka B; Wangdahl J; Wennberg P; Carlsson J; Higueras-Fresnillo S; Lenander C; Oestgren CJ; Berglind D; Radholm K; Henriksson P
Article: BRITISH JOURNAL OF SPORTS MEDICINE. 2024;58(8):411-420
Physical fitness in male adolescents and atherosclerosis in middle age: a population-based cohort study
Herraiz-Adillo A; Ahlqvist VH; Higueras-Fresnillo S; Hedman K; Hagstrom E; Smidt MF-D; Daka B; Lenander C; Berglind D; Ostgren CJ; Radholm K; Ortega FB; Henriksson P
Article: GENERAL PSYCHIATRY. 2024;37(1):e101201
Psychiatric comorbidities in epilepsy: population co-occurrence, genetic correlations and causal effects
Ahlqvist VH; Dardani C; Madley-Dowd P; Forbes H; Rast J; Zhong C; Gardner RM; Dalman C; Lyall K; Newschaffer C; Tomson T; Lundberg M; Berglind D; Davies NM; Lee BK; Magnusson C; Rai D
Article: BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY. 2024;131(1):15-25
Trends and patterns of antiseizure medication prescribing during pregnancy between 1995 and 2018 in the United Kingdom: A cohort study
Madley-Dowd P; Rast J; Ahlqvist VHH; Zhong C; Martin FZZ; Davies NMM; Lyall K; Newschaffer C; Tomson T; Magnusson C; Rai D; Lee BKK; Forbes H
Article: MAYO CLINIC PROCEEDINGS. 2024;99(1):69-80
Life's Essential 8 and Life's Simple 7 in Relation to Coronary Atherosclerosis: Results From the Population-Based SCAPIS Project
Herraiz-Adillo A; Higueras-Fresnillo S; Ahlqvist VH; Berglind D; Syrjala MB; Daka B; Lenander C; Sundstrom J; Ortega FB; Ostgren C-J; Radholm K; Henriksson P
Article: PLOS MEDICINE. 2024;21(1):e1004331
Maternal intrahepatic cholestasis of pregnancy and neurodevelopmental conditions in offspring: A population-based cohort study of 2 million Swedish children
Chen S; Ahlqvist VH; Sjoqvist H; Stephansson O; Magnusson C; Dalman C; Karlsson H; Lee BK; Gardner RM
Article: JAMA NETWORK OPEN. 2023;6(11):e2343947
Genetic and Environmental Factors and Cardiovascular Disease Risk in Adolescents
Ballin M; Neovius M; Ortega FB; Henriksson P; Nordstroem A; Berglind D; Nordstroem P; Ahlqvist VH
Article: PHARMACOEPIDEMIOLOGY AND DRUG SAFETY. 2023;32(8):886-897
Bias amplification of unobserved confounding in pharmacoepidemiological studies using indication-based sampling
Ahlqvist VH; Madley-Dowd P; Ly A; Rast J; Lundberg M; Jonsson-Bachmann E; Berglind D; Rai D; Magnusson C; Lee BK
Article: FRONTIERS IN CARDIOVASCULAR MEDICINE. 2023;10:1173550
Life's Essential 8 and carotid artery plaques: the Swedish cardiopulmonary bioimage study
Herraiz-Adillo A; Ahlqvist VH; Higueras-Fresnillo S; Berglind D; Wennberg P; Lenander C; Daka B; Ekstedt M; Sundstrom J; Ortega FB; Ostgren CJ; Radholm K; Henriksson P
Article: SCANDINAVIAN JOURNAL OF PUBLIC HEALTH. 2023;51(4):527-530
Low prevalence of ideal cardiovascular health in the general Swedish population: Results from the Swedish CArdioPulmonary bioImage Study (SCAPIS)
Higueras-Fresnillo S; Herraiz-Adillo A; Ahlqvist VH; Berglind D; Lenander C; Daka B; Syrjala MB; Sundstrom J; Ostgren CJ; Radholm K; Henriksson P
Article: BJOG-AN INTERNATIONAL JOURNAL OF OBSTETRICS AND GYNAECOLOGY. 2022;129(12):2010-2018
Mode of delivery and maternal sexual wellbeing: A longitudinal study
Martin FZ; Madley-Dowd P; Ahlqvist VH; Jonsson-Bachmann E; Fraser A; Forbes H
Article: TRIALS. 2022;23(1):577
Increasing Children's physical Activity by Policy (CAP) in preschools within the Stockholm region: study protocol for a pragmatic cluster-randomized controlled trial
Chen C; Ahlqvist VH; Henriksson P; Migueles JH; Christiansen F; Galanti MR; Berglind D
Article: EVIDENCE-BASED MENTAL HEALTH. 2022;25(1):7-14
Caesarean section and its relationship to offspring general cognitive ability: a registry-based cohort study of half a million young male adults
Ahlqvist VH; Ekstrom LD; Jonsson-Bachmann E; Tynelius P; Madley-Dowd P; Neovius M; Magnusson C; Berglind D
Article: INTERNATIONAL JOURNAL OF EPIDEMIOLOGY. 2022;50(6):1840-1851
Maternal smoking and smokeless tobacco use during pregnancy and offspring development: sibling analysis in an intergenerational Swedish cohort
Madley-Dowd P; Lundberg M; Heron J; Zammit S; Ahlqvist VH; Magnusson C; Rai D
Article: INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH. 2021;18(21):11041
Physical Activity through a Classroom-Based Intervention: A Pragmatic Non-Randomized Trial among Swedish Adolescents in an Upper Secondary School
Christiansen F; Ahlqvist VH; Nyroos M; Loefgren H; Berglind D
Article: PLOS MEDICINE. 2021;18(10):e1003820
HMG-CoA reductase inhibitors and COVID-19 mortality in Stockholm, Sweden: A registry-based cohort study
Bergqvist R; Ahlqvist VH; Lundberg M; Hergens M-P; Sundstrom J; Bell M; Magnusson C
Article: SCIENTIFIC REPORTS. 2020;10(1):18661
The association between birth by cesarean section and adolescent cardiorespiratory fitness in a cohort of 339,451 Swedish males
Ekstrom LD; Ahlqvist VH; Persson M; Magnusson C; Berglind D
Article: PLOS ONE. 2020;15(10):e0239838
Preschool environment and preschool teacher's physical activity and their association with children's activity levels at preschool
Chen C; Ahlqvist VH; Henriksson P; Magnusson C; Berglind D
Article: BMC PEDIATRICS. 2020;20(1):328
Associations of participation in organized sports and physical activity in preschool children: a cross-sectional study
Chen C; Sellberg F; Ahlqvist VH; Neovius M; Christiansen F; Berglind D
Article: JOURNAL OF THE AMERICAN HEART ASSOCIATION. 2020;9(3):e014290
Birth Weight and Cardiorespiratory Fitness Among Young Men Born at Term: The Role of Genetic and Environmental Factors
Ahlqvist VH; Persson M; Ortega FB; Tynelius P; Magnusson C; Berglind D
Article: PLOS MEDICINE. 2019;16(12):e1002996
Elective and nonelective cesarean section and obesity among young adult male offspring: A Swedish population-based cohort study
Ahlqvist VH; Persson M; Magnusson C; Berglind D
Article: SCIENTIFIC REPORTS. 2019;9(1):9719
Birth weight and grip strength in young Swedish males: a longitudinal matched sibling analysis and across all body mass index ranges
Ahlqvist VH; Persson M; Ortega FB; Tynelius P; Magnusson C; Berglind D
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Preprint: MEDRXIV. 2025
DiNetxify: a Python package for three-dimensional disease network analysis based on electronic health record data
Hou C; Liu H; Ahlqvist VH; Gisladottir EU; Yang Y; Yang H; Fang F; Valdimarsdóttir UA; Song H
Preprint: MEDRXIV. 2025;MEDRXIV
Moving beyond risk ratios in sibling analysis: estimating clinically useful measures from family-based analysis.
Ahlqvist VH; Sjöqvist H; Sjölander A; Berglind D; Lambert PC; Lee BK; Madley-Dowd P
Preprint: MEDRXIV. 2025
Adolescent Cardiorespiratory Fitness and Future Risk of Depression and Antidepressants: A Nationwide Cohort Study with Sibling Comparators
Ballin M; Ekblom Ö; Nordström A; Ahlqvist V; Nordström P
Preprint: MEDRXIV. 2024
Cross-site imputation for recovering variables without individual pooled data
Thiesmeier R; Madley-Dowd P; Orsini N; Ahlqvist VH
Preprint: MEDRXIV. 2024;MEDRXIV
Cardiorespiratory Fitness in Adolescence and Risk of Type 2 Diabetes in Late Adulthood: A Nationwide Sibling-Controlled Cohort Study.
Ballin M; Ahlqvist VH; Berglind D; Brunström M; Herraiz-Adillo A; Henriksson P; Neovius M; Ortega FB; Nordström A; Nordström P
Preprint: MEDRXIV. 2024
Antidepressant use during pregnancy and birth outcomes: analysis of electronic health data from the UK, Norway, and Sweden
Martin F; Ahlqvist V; Madley-Dowd P; Lundberg M; Cohen J; Furu K; Rai D; Forbes H; Easey K; Håberg S; Sharp G; Magnusson C; Magnus M
Preprint: MEDRXIV. 2024
First trimester antidepressant use and miscarriage: a comprehensive analysis in the UK Clinical Practice Research Datalink
Martin FZ; Madley-Dowd P; Ahlqvist V; Sharp G; Easey K; Lee B; Merriel A; Rai D; Forbes H
Preprint: MEDRXIV. 2024;MEDRXIV
Adolescent Cardiorespiratory Fitness and Risk of Cancer in Late Adulthood: Nationwide Sibling-Controlled Cohort Study.
Ballin M; Berglind D; Henriksson P; Neovius M; Nordström A; Ortega FB; Sillanpää E; Nordström P; Ahlqvist VH
Doctoral thesis: 2024
Methodological challenges in pregnancy pharmacoepidemiology : the case of antiseizure medication and offspring neurodevelopment
Ahlqvist V
Preprint: ELSEVIER BV. 2024
A Novel Clinical Prediction Model for Hip Fractures: A Development and Validation Study in the Total Population of Sweden
Nordström P; Ahlqvist V; Ballin M; Nordström A
Conference publication: PHARMACOEPIDEMIOLOGY AND DRUG SAFETY. 2023;32:70-71
Antiseizure medication during pregnancy and offspring neurodevelopmental outcomes: A study of two cohorts from the UK and Sweden
Ahlqvist VH; Madley-Dowd P; Forbes H; Rast JE; Zhong C; Lundberg M; Barry C-JS; Martin FZ; Tomson LT; Berglind D; Davies NM; Lyall K; Rai D; Magnusson C; Lee BK
Conference publication: PHARMACOEPIDEMIOLOGY AND DRUG SAFETY. 2023;32:507
Trends and patterns of antiseizure medication prescribing during pregnancy between 1995 and 2018 in the United Kingdom
Madley-Dowd P; Rast JE; Ahlqvist VH; Zhong C; Martin FZ; Davies NM; Tomson LT; Magnusson C; Rai D; Lee BK; Forbes H
Conference publication: PHARMACOEPIDEMIOLOGY AND DRUG SAFETY. 2023;32:525-526
Antidepressant use during trimester one and pregnancy loss: A causal analysis in the UK CPRD
Martin FZ; Madley-Dowd P; Ahlqvist VH; Sharp GC; Easey K; Rai D; Forbes H
Conference publication: PHARMACOEPIDEMIOLOGY AND DRUG SAFETY. 2022;31:501
Association between antiseizure medication prescribing and its indications during pregnancy and offspring neurodevelopmental outcomes between 1995 and 2020 in the UK
Madley-Dowd P; Forbes H; Ahlqvist VH; Rast J; Zhong C; Lee BK; Rai D
Conference publication: PHARMACOEPIDEMIOLOGY AND DRUG SAFETY. 2022;31:446-447
Bias amplification of unobserved confounding in pharmacoepidemiological studies: There is no free lunch in restricting the sample to those with a particular drug indication
Ahlqvist VH; Madley-Dowd P; Ly A; Rast J; Lundberg M; Jonsson-Bachmann E; Berglind D; Rai D; Magnusson C; Lee BK
Conference publication: JOURNAL OF EPIDEMIOLOGY AND COMMUNITY HEALTH. 2022;76:A34-A35
MODE OF DELIVERY AND MATERNAL SEXUAL WELLBEING: A LONGITUDINAL INVESTIGATION OF A UK-BASED COHORT
Martin F; Madley-Dowd P; Ahlqvist V; Bachmann EJ; Fraser A; Forbes H
Preprint: RESEARCH SQUARE. 2022
Increasing Children's Physical Activity by Policy (CAP) in Preschools Within the Stockholm Region: Study Protocol for a Cluster Randomized Controlled Trial
Chen C; Ahlqvist V; Henriksson P; Migueles J; Christiansen F; Galanti MR; Berglind D
Preprint: MEDRXIV. 2022
Bias amplification of unobserved confounding in pharmacoepidemiological studies using indication-based sampling: there is no free lunch in restricting the sample to those with a particular drug-indication
Ahlqvist V; Madley-Dowd P; Ly A; Rast J; Lundberg M; Jónsson-Bachmann E; Berglind D; Rai D; Magnusson C; Lee B
Preprint: RESEARCH SQUARE. 2020
Associations of participation in organized sports and physical activity in preschool children: a cross-sectional study
Chen C; Sellberg F; Ahlqvist V; Neovius M; Christiansen F; Berglind D
Preprint: RESEARCH SQUARE. 2020
Associations of Participation in Organized Sports and Physical Activity in Preschool Children: A Cross-Sectional Study
Chen C; Sellberg F; Ahlqvist VH; Neovius M; Christiansen F; Berglind D
Preprint: RESEARCH SQUARE. 2019
Preschool environment and preschool teacher’s physical activity and their association with children’s activity levels at preschool
Chen C; Ahlqvist VH; Henriksson P; Magnusson C; Berglind D
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Anställningar

Postdoktor, Institutet för miljömedicin, Karolinska Institutet, 2024-2026

Examina och utbildning

Medicine Doktorsexamen, Institutionen för global folkhälsa, Karolinska Institutet, 2024
Medicine Masterexamen, Karolinska Institutet, 2019

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