scholarly journals Family history, place and season of birth as risk factors for schizophrenia in Denmark: A replication and reanalysis

2001 ◽  
Vol 179 (1) ◽  
pp. 46-52 ◽  
Author(s):  
Carsten Bøcker Pedersen ◽  
Preben Bo Mortensen
Keyword(s):  
Family History ◽  
Environmental Factors ◽  
Population Level ◽  
Population Based ◽  
Individual Risk ◽  
Place Of Birth ◽  
Case Register ◽  
Registration System ◽  
Civil Registration ◽  
History Of

BackgroundAlthough a family history of schizophrenia is the strongest individual risk factor for schizophrenia, environmental factors related to urbanicity may contribute to a substantial proportion of the population occurrence of the disease.AimsThis study replicates previous findings in four mutually exclusive Danish study populations, including out-patient information, ICD–10 diagnoses of schizophrenia, and a broader adjustment for mental illness in family members.MethodWe established a population-based cohort of 2.66 million Danish people using data from the Civil Registration System linked with the Psychiatric Case Register.ResultsOverall, 10 264 persons developed schizophrenia during the 50.7 million person-years of follow-up. The risk of schizophrenia was increased by urbanicity of place of birth and by family history of schizophrenia or other mental disorders.ConclusionsUrban–rural differences of schizophrenia risk were replicated and could not be associated with the potential sources of bias we assessed. Environmental factors underlying the effect of place of birth are major determinants of schizophrenia occurrence at the population level, although the effect of family history is the strongest at the individual level.

scholarly journals Migration as a risk factor for schizophrenia: A Danish population-based cohort study

2003 ◽  
Vol 182 (2) ◽  
pp. 117-122 ◽  
Author(s):  
Elizabeth Cantor-Graae ◽  
Carsten Bøcker Pedersen ◽  
Thomas F. Mcneil ◽  
Preben Bo Mortensen
Keyword(s):  
Risk Factor ◽  
Population Based ◽  
Case Register ◽  
Registration System ◽  
Civil Registration ◽  
Immigrant Background ◽  
Increased Risk ◽  
History Of ◽  
Using Data ◽  
Selection Factors

BackgroundA growing body of evidence suggests that migration is a risk factor for the development of schizophrenia, although the putative mechanism remains obscure.AimsTo examine immigrant background and history of foreign residence as risk factors for schizophrenia.MethodUsing data from the Danish Civil Registration System, we established a population-based cohort of 2.14 million persons resident in Denmark by their fifteenth birthday. Schizophrenia in cohort members and parental psychiatric disorder were identified by cross-linkage with the Danish Psychiatric Case Register.ResultsThe relative risk of developing schizophrenia was 2.45 (95% CI 2.25–2.67) and 1.92 (95% CI 1.74–2.12) among first- and second-generation immigrants respectively, and 1.60 (95% CI 1.25–2.05) among Danes with a history of foreign residence.ConclusionsMigration confers an increased risk for schizophrenia that is not solely attributable to selection factors and may also be independent of foreign birth.

scholarly journals Subjective cognitive complaints at age 70: associations with amyloid and mental health

2021 ◽  
pp. jnnp-2020-325620
Author(s):  
Ivanna M. Pavisic ◽  
Kirsty Lu ◽  
Sarah E. Keuss ◽  
Sarah-Naomi James ◽  
Christopher A. Lane ◽  
...  
Keyword(s):  
Family History ◽  
Trait Anxiety ◽  
Population Based ◽  
Cross Sectional Study ◽  
Subjective Cognitive Decline ◽  
Cross Sectional ◽  
Amyloid Pathology ◽  
History Of ◽  
Β Amyloid ◽  
Anxiety Depression

ObjectiveTo investigate subjective cognitive decline (SCD) in relation to β-amyloid pathology and to test for associations with anxiety, depression, objective cognition and family history of dementia in the Insight 46 study.MethodsCognitively unimpaired ~70-year-old participants, all born in the same week in 1946 (n=460, 49% female, 18% amyloid-positive), underwent assessments including the SCD-Questionnaire (MyCog). MyCog scores were evaluated with respect to 18F-Florbetapir-PET amyloid status (positive/negative). Associations with anxiety, depression, objective cognition (measured by the Preclinical Alzheimer Cognitive Composite, PACC) and family history of dementia were also investigated. The informant’s perspective on SCD was evaluated in relation to MyCog score.ResultsAnxiety (mean (SD) trait anxiety score: 4.4 (3.9)) was associated with higher MyCog scores, especially in women. MyCog scores were higher in amyloid-positive compared with amyloid-negative individuals (adjusted means (95% CIs): 5.3 (4.4 to 6.1) vs 4.3 (3.9 to 4.7), p=0.044), after accounting for differences in anxiety. PACC (mean (SD) −0.05 (0.68)) and family history of dementia (prevalence: 23.9%) were not independently associated with MyCog scores. The informant’s perception of SCD was generally in accordance with that of the participant.ConclusionsThis cross-sectional study demonstrates that symptoms of SCD are associated with both β-amyloid pathology, and more consistently, trait anxiety in a population-based cohort of older adults, at an age when those who are destined to develop dementia are still likely to be some years away from symptoms. This highlights the necessity of considering anxiety symptoms when assessing Alzheimer’s disease pathology and SCD.

Combined Effects of Lung Disease History, Environmental Exposures, and Family History of Lung Cancer to Susceptibility of Lung Cancer in Chinese Non-smokers

2021 ◽  
Author(s):  
Fanglin Yu ◽  
Rendong Xiao ◽  
Xu Li ◽  
Zhijian Hu ◽  
Lin Cai ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Family History ◽  
Environmental Factors ◽  
Lung Disease ◽  
Environmental Exposures ◽  
Collective Effects ◽  
Combined Effects ◽  
Cancer History ◽  
Increased Risk ◽  
History Of

Abstract Background: Although cigarette smoking is a major risk factor for lung cancer, the incidence rate of lung cancer among non-smokers is notable. The etiology and potential mechanism of non-smoker lung cancer are worthy of further research. This study was designed to explore the collective effects of environmental factors and the relationship between environmental exposure index (EEI) and lung cancer among non-smokers by evaluating the joint effects among lung disease history, environmental factors, and family history of lung cancer without smoking confounders.Methods: A total of 767 never-smoked lung cancer cases and 767 sex- and age-matched controls were selected from the department of Thoracic Surgery and Respiratory Medicine of three hospitals in Fujian, China. We used two methods to develop the EEI according to 12 statistically significant environmental risk factors. Restricted cubic spline (RCS) was applied to analyze the non-linear relationship between EEI and lung cancer in non-smokers. Combined effects, additive interaction, and multiplicative interaction were assessed among lung disease history, EEI, and family history of lung cancer to estimate susceptibility to develop lung cancer.Results: Lung disease history, especially asthma, was significantly associated with an increased risk of lung cancer with an odds ratio (OR) for asthma history of 14.720 (95% CI: 1.877–115.449). Family history of lung cancer was related to susceptibility of lung cancer (OR = 3.347, 95% CI: 1.930–5.806). According to type of relatives and cancer, a parental or children’s history and a sibling’s history of lung cancer were significantly associated with an increased risk of lung cancer. The positive association between EEI and lung cancer was apparently stronger in those with lung disease history or family lung cancer history. Furthermore, there was a addictive interaction between EEI and lung disease history, and a possibly addictive interaction between EEI and family lung cancer history on development of lung cancer.Conclusions: There were combined effects among lung disease history, environmental exposures, and family history of lung cancer toward susceptibility to lung cancer in Chinese non-smokers. Non-smokers who had a family history of lung cancer were at higher risk of lung cancer than non-smokers who had lung disease history. Non-smokers with family cancer history may obtain benefits from removal of environmental exposures and active treatment of lung disease.

Association between Family History of Benign Prostatic Hyperplasia and Urinary Symptoms: Results of a Population-based Study

1995 ◽  
Vol 142 (9) ◽  
pp. 965-973 ◽  
Author(s):  
Rosebud O. Roberts ◽  
Thomas Rhodes ◽  
Laurel A. Panser ◽  
Cynthia J. Girman ◽  
Christopher G. Chute ◽  
...  
Keyword(s):  
Benign Prostatic Hyperplasia ◽  
Family History ◽  
Population Based ◽  
Prostatic Hyperplasia ◽  
Urinary Symptoms ◽  
Population Based Study ◽  
History Of

scholarly journals Is healthcare-seeking with gynaecological alarm symptoms influenced by personal and professional relations? A Danish population-based, cross-sectional study

BMJ Open ◽  
2020 ◽  
Vol 10 (5) ◽  
pp. e033471
Author(s):  
Anja Schmidt Vejlgaard ◽  
Sanne Rasmussen ◽  
Dorte Ejg Jarbøl ◽  
Kirubakaran Balasubramaniam
Keyword(s):  
Social Network ◽  
Population Based ◽  
Cross Sectional Study ◽  
Age Group ◽  
Cross Sectional ◽  
Registration System ◽  
Healthcare Seeking ◽  
Civil Registration ◽  
Personal Relation ◽  
Alarm Symptom

ObjectivesTo identify the personal and professional relations of women experiencing gynaecological alarm symptoms, to analyse if involving a personal relation is related to healthcare-seeking with gynaecological alarm symptoms, and to analyse if having an available social network is associated with involvement of this relation.DesignWeb-based, population-based, cross-sectional questionnaire survey.SettingThe general population in Denmark.ParticipantsThe study invited 100 000 individuals randomly drawn from the Danish Civil Registration System. Pregnant women and women who did not answer relevant questions about social network were excluded. A total of 5053 women who experienced at least one gynaecological alarm symptom were included in the study.Primary and secondary outcomes(1) Personal and professional relations that women experiencing gynaecological alarm symptoms involve; (2) the association between involving a personal relation and healthcare-seeking; and (3) the association between having an available social network and involvement of this relation.ResultsThe general practitioner (GP) was the most involved professional relation, while the spouse/partner was the most involved personal relation. When experiencing gynaecological alarm symptoms, more than 50% of women did not involve a professional relation and 20% did not involve a personal relation. For all four gynaecological alarm symptoms, the odds of involving the GP were higher in the oldest age group. Women were two to seven times more likely to involve their GP if they had personal relation involvement. No statistically significant association was found between having an available social network and involving the GP.ConclusionInvolving a personal relation in healthcare-seeking was associated with increased involvement of the GP, who consequently was the most involved professional relation when experiencing gynaecological alarm symptoms. Spouse/partner was the most involved personal relation. The oldest age group had the highest odds of involving the GP. No association was found between having an available social network and involving the GP.

scholarly journals Bedside clinical assessment predicts recurrence after hospitalization due to viral lower respiratory tract infection in young children

2019 ◽  
Vol 68 (3) ◽  
pp. 756-761 ◽  
Author(s):  
Maria Arroyo ◽  
Kyle P Salka ◽  
Geovanny F Perez ◽  
Carlos E Rodriguez-Martinez ◽  
Jose A Castro-Rodriguez ◽  
...  
Keyword(s):  
Risk Factors ◽  
Family History ◽  
Tract Infection ◽  
Young Children ◽  
Early Life ◽  
Lower Respiratory Tract ◽  
Individual Risk ◽  
Respiratory Illnesses ◽  
History Of ◽  
Individual Risk Factors

Infants requiring hospitalization due to a viral lower respiratory tract infection (LRTI) have a high risk of developing recurrent respiratory illnesses in early life and asthma beyond childhood. Notably, all validated clinical scales for viral LRTI have focused on predicting acute severity instead of recurrence. We present a novel clinical approach combining individual risk factors with bedside clinical parameters to predict recurrence after viral LRTI hospitalization in young children. A retrospective longitudinal cohort of young children (≤3 years) designed to define clinical predictive factors of recurrent respiratory illnesses within 12 months after hospitalization due to PCR-confirmed viral LRTI. Data collection was through electronic medical record. We included 138 children hospitalized with viral LRTI. Using automatic stepwise logistic model selection, we found that the strongest predictors of recurrence in infants hospitalized for the first time were severe prematurity (≤32 weeks’ gestational age, OR=5.19; 95% CI 1.76 to 15.32; p=0.002) and a clinical score that weighted hypoxemia, subcostal retractions and wheezing (OR=3.33; 95% CI 1.59 to 6.98; p<0.001). After the first hospitalization, the strongest predictors of subsequent episodes were wheezing (OR=5.62; 95% CI 1.03 to 30.62; p=0.04) and family history of asthma (OR=5.39; 95% CI 1.04 to 27.96; p=0.04). We found that integrating individual risk factors (eg, prematurity or family history of asthma) with bedside clinical assessment (eg, wheezing, subcostal retractions or hypoxemia) can predict the risk of recurrence after viral LRTI hospitalization in infants. This strategy may enable clinically oriented subsetting of infants with viral LRTI based on individual predictors for recurrent respiratory illnesses during early life.

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