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multigeneration register

Jianguang Ji, Jan Sundquist, Kristina Sundquist
BACKGROUND: Personal history of type 2 diabetes mellitus (T2DM) is associated with a lower incidence of prostate cancer, but the underlying mechanisms are largely unknown. We hypothesized that genetic factors that are involved in the development of T2DM might protect against prostate cancer. METHODS: We used a few Swedish registers, including the Swedish Multigeneration Register and the Cancer Register, to examine the risk of prostate cancer among men with a family history of T2DM...
2016: Frontiers in Oncology
Bengt Zöller, Xinjun Li, Jan Sundquist, Kristina Sundquist
Inherited hypercoagulable states (i.e. thrombophilia) have been suggested to be involved in retinal vascular occlusion but results are divergent. Vascular micronutrition and ischemia have been hypothesised to be involved in the pathogenesis of glaucoma. This nationwide study determines the importance of family history of venous thromboembolism (VTE) as a risk factor for retinal vein occlusion (RVO), retinal artery occlusion (RAO), primary open angle glaucoma (POAG) and primary angle-closure glaucoma (PACG)...
November 2016: Journal of Thrombosis and Thrombolysis
Jianguang Ji, Jan Sundquist, Kristina Sundquist
Familial clustering of pleural mesothelioma was reported previously, but none of the reports quantified the familial risk of mesothelioma or the association with other cancers. The contributions of shared environmental or genetic factors to the aggregation of mesothelioma were unknown.We used a number of Swedish registers, including the Swedish Multigeneration Register and the Swedish Cancer Register, to examine the familial risk of mesothelioma in offspring. Standardised incidence ratios (SIRs) were used to calculate the risk...
September 2016: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
T Jia, P Tynelius, F Rasmussen
OBJECTIVES: To investigate the dose-response association between body mass index (BMI) in young adulthood and the risk of mortality caused by unintentional injuries. METHODS: We performed a cohort study including 7 43 398 men identified by linkage of the Multigeneration Register and the Military Service Conscription Register. Cox regression models were used to examine crude and adjusted hazard ratios (HRs) and 95% confidence intervals (95% CIs) of the relationships between BMI at age 18-20 years and the risk of death from all unintentional injuries as well as from specific unintentional injuries...
May 2016: International Journal of Obesity: Journal of the International Association for the Study of Obesity
Martin Cederlöf, Laura M Thornton, Jessica Baker, Paul Lichtenstein, Henrik Larsson, Christian Rück, Cynthia M Bulik, David Mataix-Cols
Obsessive-compulsive disorder (OCD) often co-occurs with anorexia nervosa (AN), a comorbid profile that complicates the clinical management of both conditions. This population-based study aimed to examine patterns of comorbidity, longitudinal risks, shared familial risks and shared genetic factors between OCD and AN at the population level. Participants were individuals with a diagnosis of OCD (N=19,814) or AN (N=8,462) in the Swedish National Patient Register between January 1992 and December 2009; their first-, second- and third-degree relatives; and population-matched (1:10 ratio) unaffected comparison individuals and their relatives...
October 2015: World Psychiatry: Official Journal of the World Psychiatric Association (WPA)
David Mataix-Cols, Kayoko Isomura, Ana Pérez-Vigil, Zheng Chang, Christian Rück, K Johan Larsson, James F Leckman, Eva Serlachius, Henrik Larsson, Paul Lichtenstein
IMPORTANCE: Tic disorders, including Tourette syndrome (TS) and chronic tic disorders (CTDs), are assumed to be strongly familial and heritable. Although gene-searching efforts are well under way, precise estimates of familial risk and heritability are lacking. Previous controlled family studies were small and typically conducted within specialist clinics, resulting in potential ascertainment biases. They were also underpowered to disentangle genetic from environmental factors that contribute to the observed familiality...
August 2015: JAMA Psychiatry
Niklas Långström, Kelly M Babchishin, Seena Fazel, Paul Lichtenstein, Thomas Frisell
BACKGROUND: Sexual crime is an important public health concern. The possible causes of sexual aggression, however, remain uncertain. METHODS: We examined familial aggregation and the contribution of genetic and environmental factors to sexual crime by linking longitudinal, nationwide Swedish crime and multigenerational family registers. We included all men convicted of any sexual offence (N = 21,566), specifically rape of an adult (N = 6131) and child molestation (N = 4465), from 1973 to 2009...
April 2015: International Journal of Epidemiology
Serhiy Dekhtyar, Hui-Xin Wang, Kirk Scott, Anna Goodman, Ilona Koupil, Agneta Herlitz
OBJECTIVE: To test a life-course model of cognitive reserve in dementia and examine if school grades around age 10 years, formal educational attainment, and lifetime occupational complexity affect the risk of dementia in old age. METHODS: 7,574 men and women from the Uppsala Birth Cohort Multigenerational Study were followed for 21 years. Information on school performance, formal education, and occupational attainment was collected prospectively from elementary school archives and population censuses...
September 2015: American Journal of Geriatric Psychiatry
H Bould, U Sovio, I Koupil, C Dalman, N Micali, G Lewis, C Magnusson
OBJECTIVE: We investigated whether parental eating disorders (ED) predict ED in children, using a large multigeneration register-based sample. METHOD: We used a subset of the Stockholm Youth Cohort born 1984-1995 and resident in Stockholm County in 2001-2007 (N = 286,232), The exposure was a diagnosed eating disorder in a parent; the outcome was any eating disorder diagnosis in their offspring, given by a specialist clinician, or inferred from an appointment at a specialist eating disorder clinic...
July 2015: Acta Psychiatrica Scandinavica
Martin Cederlöf, Paul Lichtenstein, Henrik Larsson, Marcus Boman, Christian Rück, Mikael Landén, David Mataix-Cols
Obsessive-compulsive disorder (OCD) often co-occurs with psychotic and bipolar disorders; this comorbidity complicates the clinical management of these conditions. In this population-based longitudinal and multigenerational family study, we examined the patterns of comorbidity, longitudinal risks, and shared familial risks between these disorders. Participants were individuals with a diagnosis of OCD (n = 19,814), schizophrenia (n = 58,336), bipolar disorder (n = 48,180), and schizoaffective disorder (n = 14,904) included in the Swedish Patient Register between January 1969 and December 2009; their first-, second-, and third-degree relatives; and population-matched (1:10 ratio) unaffected comparison individuals and their relatives...
September 2015: Schizophrenia Bulletin
Xia Jiang, Thomas Frisell, Johan Askling, Elizabeth W Karlson, Lars Klareskog, Lars Alfredsson, Henrik Källberg
OBJECTIVE: Family history of rheumatoid arthritis (RA) is one of the strongest risk factors for developing RA, and information on family history is, therefore, routinely collected in clinical practice. However, as more genetic and environmental risk factors shared by relatives are identified, the importance of family history may diminish. The aim of this study was to determine how much of the familial risk of RA can be explained by established genetic and nongenetic risk factors. METHODS: History of RA among first-degree relatives of individuals in the Epidemiological Investigation of Rheumatoid Arthritis case-control study was assessed through linkage to the Swedish Multigeneration Register and the Swedish Patient Register...
February 2015: Arthritis & Rheumatology
Kristina Sundquist, Jan Sundquist, Jianguang Ji
Cancer runs in families, suggesting a heritable component, but the contribution of environmental factors cannot be neglected. Studies on spousal risk can partly disentangle the environmental contribution but miss shared environmental factors during childhood and adolescence. Here, we examined the familial aggregation of common cancers among 80,281 Swedish-born adoptees, identified from the national Swedish Multigeneration Register, and linked them to the Swedish Cancer Registry. Standardized incidence ratios (SIRs) were calculated for common cancers (colorectal, lung, breast, prostate, and skin cancers) in the adoptees whose adoptive parents were diagnosed with concordant cancers, compared with the general population...
March 2015: European Journal of Cancer Prevention
M P Chaparro, Ilona Koupil
The objective of this study was to investigate the impact of grandparental and parental education and parental educational trajectory on their adult offspring's overweight/obesity. We used register data from the Uppsala Birth Cohort Multigenerational Study, based on a representative cohort born in Sweden 1915-1929 (G1). Our sample included 5122 women and 11,204 men who were grandchildren of G1 (G3), their parents (G2), and grandparents. G3's overweight/obesity (BMI≥25 kg/m2) was based on pre-pregnancy weight/height for women before their first birth (average age=26 years), and measured weight/height at conscription for men (average age=18 years)...
November 2014: Social Science & Medicine
Fredrik Ahlsson, Magnus Kaijser, Johanna Adami, Maria Lundgren, Mårten Palme
BACKGROUND: An increased risk of poor school performance for children born preterm has been shown in many studies, but whether this increase is attributable to preterm birth per se or to other factors associated with preterm birth has not been resolved. METHODS: We used data from the Swedish Medical Birth Register, the Longitudinal Integration Database for Sickness Insurance and Labor Market Study, the Swedish Multigeneration Register, and the National School Register to link records comprising the Swedish birth cohorts from 1974 through 1991...
January 2015: Epidemiology
Bengt Zöller, Jianguang Ji, Jan Sundquist, Kristina Sundquist
BACKGROUND: Varicose veins (VVs) have been associated with venous thromboembolism (VTE), but whether these diseases share familial susceptibility has not been determined. This nationwide study aimed to determine whether VTE shares familial susceptibility with VVs. METHODS AND RESULTS: Swedish Multigeneration Register data for persons aged 0 to 76 years during the period 1964-2008 were linked to the Swedish Inpatient and Outpatient Registers. Familial risks (standardized incidence ratios [SIRs]) of VTE and VVs were examined in 2 ways (ie, bidirectionally): risk of VTE in subjects whose siblings had been diagnosed with VVs and risk of VVs in persons whose siblings had been diagnosed with VTE...
August 2014: Journal of the American Heart Association
Rasmus Waehrens, Henrik Ohlsson, Jan Sundquist, Kristina Sundquist, Bengt Zöller
OBJECTIVES: IBS aggregates in families, but the familial risk of IBS has only been determined in first-degree relatives and spouses. This nationwide study aimed to determine the familial risk of IBS in first-degree, second-degree, and third-degree relatives and spouses of affected individuals in order to estimate the relative influences of genes and shared family environment. METHODS: We performed a case-cohort study. The Swedish Multigeneration Register was linked to the Hospital Discharge Register for the period 1987-2010 and the Swedish Outpatient Care Register for 2001-2010...
February 2015: Gut
B Zöller, H Ohlsson, J Sundquist, K Sundquist
BACKGROUND: Data concerning the importance of a family history of venous thromboembolism (VTE) for the risk of recurrent VTE are sparse. The aim of this nationwide study was to determine whether a family history of VTE is a risk factor for recurrent hospitalization for unprovoked VTE (deep vein thrombosis of the lower extremities or pulmonary embolism). METHODS: We linked Multigeneration Register data on individuals aged 0-77 years to the Swedish nationwide Hospital Discharge Register data for the period 1987-2009 to compare the risk of hospitalization for unprovoked recurrent VTE among individuals with and without a parental or sibling history of VTE...
2014: Journal of Thrombosis and Haemostasis: JTH
Jonas F Ludvigsson, Annika Bergquist, Scott M Montgomery, Shahram Bahmanyar
BACKGROUND & AIMS: Primary sclerosing cholangitis (PSC) is associated with increased mortality. Cardiovascular disease is a leading cause of death in the Western world. We examined the risk of cardiovascular disease and diabetes (type 1 and type 2) in patients with PSC and their first-degree relatives. METHODS: This prospective multicentre cohort study included 678 individuals with PSC diagnosed between 1970 and 2004, and 6347 non-PSC reference individuals matched for age, and sex...
April 2014: Journal of Hepatology
Christina Westerdahl, Xinjun Li, Jan Sundquist, Kristina Sundquist, Bengt Zöller
OBJECTIVE: Hypertension clusters in families. However, no nationwide study has investigated the family history as a predictor of hospitalization for hypertension, which was the purpose of this study. RESEARCH DESIGN AND METHODS: The study is a nationwide follow-up study. Swedish Multigeneration Register data for individuals aged 0-76 years were linked to Hospital Discharge Register data for 1964-2008. Standardized incidence ratios (SIRs) were calculated for individuals whose relatives were hospitalized with a main diagnosis of hypertension compared with those whose relatives were not...
October 2013: Journal of Hypertension
Martin Kolk
The study of the intergenerational transmission of fertility has a long history in demography, but until now research has focused primarily on parents' influence on their children's fertility patterns and has largely overlooked the possible influence of other kin. This study examines the transmission of fertility patterns from parents, grandparents, uncles, and aunts, using event history models to determine the risk of first, second, and third births. Swedish register data are used to study the 1970-82 birth cohorts...
March 2014: Population Studies
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