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Using Swedish nationwide registry data, the authors investigated the correlation of genetic and environmental risk factors in the etiology of drug abuse as ascertained from medical and criminal registries by modeling twin and sibling data. Medical drug abuse was defined using public inpatient and outpatient records, while criminal drug abuse was ascertained through legal records. Twin, full and ha

Objective To study the risk of myocardial infarction (MI) in patients with atrial fibrillation (AF) treated in primary health care with warfarin or acetylsalicylic acid (ASA, aspirin). Methods The study population included subjects (n = 12,283) 45 years or older diagnosed with AF who were treated in 75 primary care centres in Sweden between 2001 and 2007. MI was defined as a hospital stay for MI d

Background: Criminal offending is strongly transmitted across generations. Aims: To clarify the contribution of rearing environment to crossgenerational transmission of crime. Method: Using Swedish national registries, we identified 1176 fullsibling and 3085 half-sibling sets from high-risk families where at least one sibling was adopted and the other raised by the biological parents. Results: Ris

Objective: The authors sought to clarify the relationship between marriage and risk for alcohol use disorder. Method: The association between marital status and risk for first registration for alcohol use disorder in medical, criminal, and pharmacy registries was assessed in a population-based Swedish cohort (N=3,220,628) using longitudinal timedependent survival and co-relative designs. Results:

The epidemiology of metastases in neuroendocrine tumors (NETs) is virtually unknown. The present novel approach took use of two nationwide Swedish registers to assess the distribution of metastatic sites in comparison to adenocarcinoma. 7,334 patients with NET were identified from the Swedish Cancer Registry. Metastatic sites were identified from the National Patient and Cause of Death Registries.

Studies on whether family history (FH) of venous thromboembolism (VTE) affects long-term mortality after VTE are missing. The aim of this study was to determine whether FH of VTE affects long-term mortality after a first episode of VTE. Using Swedish medical databases, we conducted a 30-year nationwide cohort study of 49,159 adult Swedish born patients included in the multi-generation register (bo

Background: Whether high cardiovascular fitness is associated with reduced risk of venous thromboembolism (VTE) is unknown. The present study aims to determine whether high cardiovascular fitness reduces the risk of VTE. Methods: A Swedish cohort of male conscripts (n = 773,925) born in 1954–1970 with no history of previous VTE were followed from enlistment (1972–1990) until 2010. Data on cardiova

Background: Resilience has been shown to be protective against alcohol use disorders (AUDs), but the magnitude and nature of the relationship between these 2 phenotypes are not clear. The aim of this study was to examine the strength of this relationship and the degree to which it results from common genetic or common environmental influences. Methods: Resilience was assessed on a 9-point scale du

Background: Although alcohol use disorder (AUD) is associated with future risk for psychosocial dysfunction, the degree to which this arises from a direct causal effect of AUD on functioning v. from correlated risk factors (also known as confounders) is less clearly established. Method: AUD was assessed from Swedish medical, criminal and pharmacy registries. In a large general population cohort, u

Objectives: Chronic pain is common in older adults, yet little is known of its development and the factors that predict its persistence and onset at old age. The aims of this longitudinal cohort study were to examine the prevalence and incidence of chronic pain and to explore possible risk factors for its persistence and onset in a representative sample of older Swedish adults. Method: Data were c

Asthma is associated with an increased risk of pulmonary embolism (PE) but little is known about whether asthma is associated with an increased risk of deep venous thrombosis (DVT). The aim in this study was to determine the risk of the first event of PE, DVT or a combination of PE and DVT in patients with asthma. We conducted this nationwide case-control study using data from Swedish nationwide r

Former studies that have attempted to characterize individual socio-demographic factors associated with long-term benzodiazepine use were based on relatively small sample sizes and/or self-reported data. Our aim was to clarify this using large-scale primary health care data from Sweden. The present study covered 71 primary health care centres containing individual-level data from a total of 919, 9

Introduction: Low aerobic fitness, low muscular strength, and obesity have been associated with premature mortality, but their interactive effects are unknown. This study examined interactions among these common, modifiable factors, to help inform more-effective preventive interventions. Methods: This national cohort study included all 1,547,478 military conscripts in Sweden during 1969-1997 (97%-

Plasma cell dyscrasias, including monoclonal gammopathy of undetermined significance (MGUS), multiple myeloma (MM), Waldenström macroglobulinemia (WM) and light chain AL amyloidosis, are characterized by clonal expansion of plasma cells which produce a vast amount of an immunoglobulin-derived M-protein. We noted that MGUS diagnosis often coincided with diagnoses of senile cataract and glaucoma and

Background: Recent studies suggest a possible causal role for smoking in schizophrenia and psychosis. Most studies have focused on cigarette smoking, the most common form of tobacco use, but other forms of tobacco exist, including smokeless products such as Swedish snuff (or "snus"). Methods: We explored whether snus use is associated with schizophrenia and non-affective psychotic illness in a lar

Background The need for psychotherapy in primary health care is on the increase but individual-based treatment is costly. The main aim of this randomised controlled trial (RCT) was to compare the effect of mindfulness-based group therapy (MGT) with treatment as usual (TAU), mainly individual-based cognitive behavioural therapy (CBT), on a broad range of psychiatric symptoms in primary care patient

Objective: Most studies suggest that poor cognitive functioning in adolescence increases risk of alcohol use disorders (AUDs). We seek to clarify the causes of this association. Method: In Swedish individuals born from 1972 to 1990 in whom cognitive functioning was assessed by school achievement at age 16 years (males and females, N = 1,796,048) and by IQ at ages 18–20 (males, N = 554,644), we exa

BACKGROUND: Body height has been associated with an increased risk of venous thromboembolism (VTE), but the association can be confounded with shared familial factors (genetic/environmental). A cosibling design is useful for deeper understanding about the relationship between VTE and height.METHODS AND RESULTS: From Swedish national registry databases, we used a corelative design with full sibling