Search results for "Season of birth"

showing 7 items of 7 documents

Association between affective temperaments and season of birth in a general student population.

2011

Abstract Background Several studies indicate a significant association between birth season and personality and neuropsychiatric disorders. The aim of our present study was to investigate the association between affective temperaments and season of birth in a nonclinical sample. Methods 366 university students completed the standardized Hungarian version of the Temperament Evaluation of Memphis, Pisa, Paris and San Diego-Auto-questionnaire (TEMPS-A). Ordinary Least Squares regression was applied to explain the relationship between TEMPS-A subscale and birth season of the respondents. Results We found a significant association between temperament scores and birth season in the case of the Hy…

AdultMalePsychometricsSeason of birthAdolescentPersonality InventoryPsychometricsmedia_common.quotation_subjectAffect (psychology)Developmental psychologyYoung AdultSex FactorsPersonalityHumansYoung adultAssociation (psychology)StudentsTemperamentSubclinical infectionmedia_commonaffective temperamentsseasonalityReproducibility of Resultstemps-a; birth season; affective temperaments; seasonality; personalityPsychiatry and Mental healthClinical PsychologyAffectpersonalityTemperamenttemps-aFemaleSeasonsPsychologybirth seasonJournal of affective disorders
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Returns to Schooling in Spain: How Reliable are Instrumental Variable Estimates?

2002

This paper studies the ordinary least–squares (OLS) and instrumental variable (IV) estimates of the returns to schooling for male workers in Spain. OLS estimates are often biased due to the endogeneity of schooling, measurement errors or omitted variables. Proper IV estimates correct this bias. The reliability of family background, natural experiments (based on changes in the education system and season of birth) and the availability of a college in the province is checked using Spanish data. The results suggest that background and college availability are valid instruments and that the IV estimates of the returns to schooling are higher than OLS estimates. These results are in line with th…

Male workersObservational errorSeason of birthGeography Planning and DevelopmentInstrumental variableEconometricsEndogeneityReliability (statistics)DemographyMathematicsLabour
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Returns to Schooling in Spain. How Reliable Are IV Estimates?

2001

This paper studies the Ordinary Least-Squared (OLS) and Instrumental Variables (IV) estimates of the returns to schooling for male workers in Spain. OLS estimates are often biased due to the endogeneity of schooling, measurement errors or omitted variables. Proper IV estimates correct this bias. The reliability of family background, natural experiments (based on changes in the education system and season of birth) and the availability of a college in the province is checked using Spanish data. The results suggest that background and college availability are valid instruments and that the IV estimates of the returns to schooling are higher than OLS estimates. These results are in line with t…

Male workersjel:J24Returns to schooling Instrumental Variables Spanish schooling systemSeason of birthjel:C20Instrumental variableEconomicsEconometricsjel:C13Endogeneityjel:I21
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Season of birth effect in narcolepsy

2003

The causes of narcolepsy are unknown.1 Genetic factors such as positivity for HLA DR2 or certain genotypes of tumor necrosis factor–alpha or the orexin gene only explain a fraction of the risk. A season of birth effect has been observed in numerous studies for schizophrenia and bipolar disorder with a 10% excess of birth in winter and spring.2 Among the underlying factors discussed are infectious agents as well as seasonal variations in nutrition, light effects, and toxins.2 Most recently, the vitamin D hypothesis has been revisited.3 The production of vitamin D is associated with exposure to sunlight and the active 1,25 dihydroxyvitamin D3 is a potent modulator of immune functions,4 a dysf…

MalePeriodicitySeason of birthPhysiologyBirth rateCohort StudiesGermanyVitamin D and neurologyHumansMedicineBipolar disorderBirth RateNarcolepsySleep disorderbusiness.industryMiddle Agedmedicine.diseaseOrexinCausalitySchizophreniaBirth CertificatesFemaleSeasonsNeurology (clinical)businessNeuroscienceNarcolepsyNeurology
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Differential dopamine receptor D4 allele association with ADHD dependent of proband season of birth

2008

Contains fulltext : 70196.pdf (Publisher’s version ) (Closed access) Season of birth (SOB) has been associated with attention deficit hyperactivity disorder (ADHD) in two existing studies. One further study reported an interaction between SOB and genotypes of the dopamine D4 receptor (DRD4) gene. It is important that these findings are further investigated to confirm or refute the findings. In this study, we investigated the SOB association with ADHD in four independent samples collected for molecular genetic studies of ADHD and found a small but significant increase in summer births compared to a large population control dataset. We also observed a significant association with the 7-repeat…

MaleProbandLinkage disequilibriumSeason of birthGenetics and epigenetic pathways of disease [NCMLS 6]MedizinPhysiologyNeuroinformatics [DCN 3]Mental health [NCEBP 9]Linkage DisequilibriumGenomic disorders and inherited multi-system disorders [IGMD 3]03 medical and health sciencesCellular and Molecular Neuroscience0302 clinical medicineCognitive neurosciences [UMCN 3.2]mental disordersmedicineDopamine receptor D4Perception and Action [DCN 1]HumansAttention deficit hyperactivity disorderddc:610Medizinische Fakultät » Universitätsklinikum Essen » LVR-Klinikum Essen » Klinik für Psychiatrie Psychosomatik und Psychotherapie des Kindes- und JugendaltersAlleleGene–environment interactionChildAllelesGenetics (clinical)biologyReceptors Dopamine D4Parturitionmedicine.disease030227 psychiatry3. Good healthPsychiatry and Mental healthVariable number tandem repeatGenetic defects of metabolism [UMCN 5.1]Attention Deficit Disorder with HyperactivityChild Preschoolbiology.proteinFemaleSeasonsFunctional Neurogenomics [DCN 2]030217 neurology & neurosurgery
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Association of neovascular age-related macular degeneration with month and season of birth in Italy

2016

In order to investigate the influence of season and month of birth on the risk of neovascular age-related macular degeneration (n-AMD) in Italy, we evaluated the month birth and sex of all patients, recorded in the anti-vascular endothelial growth factor (VEGF) monitoring registry of the Italian Medicines Agency, born between 1925-1944, who received intravitreal anti-VEGF injections for n-AMD between January 1, 2013 and July 29, 2015. The numbers of all births in Italy in the same years, extracted from the Italian National Institute of Statistics, were used to calculate the expected number of n-AMD cases. Overall, 45,845 patients (19,207 men, 26,638 women) received intravitreal anti-VEGF fo…

MaleVascular Endothelial Growth Factor AAginggenetic structuresMonth of birthVEGF receptorsneovascular AMDAngiogenesis InhibitorsAptamersMacular Degeneration0302 clinical medicineSeason of birthReceptors80 and overMedicineRegistriesAged 80 and overNeovascularization PathologicbiologyVascular Endothelial Growth FactorIncidenceIncidence (epidemiology)Aptamers NucleotideBevacizumabTreatment OutcomeItalyanti-VEGFFemaleSeasonsNucleotideNeovascular age-related macular degenerationResearch Papermedicine.drugAnti-VEGF; Month of birth; Neovascular age-related macular degeneration; Neovascular AMD; Season of birth; Aged; Aged 80 and over; Angiogenesis Inhibitors; Aptamers Nucleotide; Bevacizumab; Female; Humans; Incidence; Italy; Macular Degeneration; Male; Neovascularization Pathologic; Ranibizumab; Receptors Vascular Endothelial Growth Factor; Recombinant Fusion Proteins; Registries; Treatment Outcome; Vascular Endothelial Growth Factor A; Seasons; Aging; Cell BiologySeason of birthBevacizumabRecombinant Fusion ProteinsNeovascular AMDneovascular age-related macular degeneration03 medical and health sciencesRanibizumabAge relatedHumansNeovascularizationAgedPathologicseason of birthbusiness.industrymonth of birthAnti-VEGFCell BiologyMacular degenerationmedicine.diseaseeye diseasesanti-VEGF; month of birth; neovascular AMD; neovascular age-related macular degeneration; season of birthReceptors Vascular Endothelial Growth Factor030221 ophthalmology & optometrybiology.proteinsense organsRanibizumabbusinessMonth of birth030217 neurology & neurosurgeryDemographyAging
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Is season of birth associated with multiple sclerosis?

2000

Objective - To compare the monthly distribution of multiple sclerosis (MS) patients' births with that of the Sicilian population. Background -Studies on the association between season of birth and risk of MS are scanty and controversial. Design and methods - Archives of the Institute of Neuropsychiatry of the Universities of Palermo and Catania were searched up to 1995 for definite MS patients (McDonald & Halliday criteria). The monthly distribution of MS patients' births (N=965) was compared with that of the Sicilian population (N = 5,608,307). Results -The distribution of births among MS patients compared with the general population was not different when tested by the X 2 statistic (P > …

education.field_of_studymedicine.medical_specialtyMonth of birthSeason of birthbusiness.industryMultiple sclerosisPopulationGeneral Medicinemedicine.diseaseSurgeryNeurologyEpidemiologyMedicineNeurology (clinical)Risk factorbusinesseducationDemographyActa Neurologica Scandinavica
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