Comparison of three enzyme-linked immunosorbent assays suitable for the detection of antibodies to rotaviruses in epidemiological studies

1984 ◽  
Vol 3 (6) ◽  
pp. 516-520 ◽  
Author(s):  
G. Angarano ◽  
V. Laddago ◽  
A. M. Materi
Keyword(s):  
Epidemiological Studies ◽  
Immunosorbent Assays

scholarly journals Group-Reactive ELISAs for Detecting Antibodies to African Horsesickness and Equine Encephalosis Viruses in Horse, Donkey, and Zebra Sera

1993 ◽  
Vol 5 (1) ◽  
pp. 3-7 ◽  
Author(s):  
Roy Williams ◽  
Dion Henri Du Plessis ◽  
Wouter Van Wyngaardt
Keyword(s):  
Guinea Pig ◽  
Indirect Elisa ◽  
Complement Fixation ◽  
Epidemiological Studies ◽  
Anticomplementary Activity ◽  
Serum Samples ◽  
Agar Gel ◽  
Immunosorbent Assays ◽  
African Horsesickness Virus

Group-reactive enzyme-linked immunosorbent assays (ELISAs) were developed to selectively detect antibodies to African horsesickness virus (AHSV) and equine encephalosis virus (EEV), 2 orbiviruses that infect equids. In indirect ELISA, guinea pig antisera to all known AHSV or EEV serotypes recognized immobilized AHSV serotype 3 or EEV Cascara, respectively. Antisera from naturally infected animals did not cross-react with their respective heterologous viruses. The ELISA was used in parallel with the complement fixation (CF) and agar gel immunodiffusion tests to detect antibodies in sera from animals in the field. The ELISA distinguished among those that contained antibodies to AHSV, EEV, or both viruses and was useful with sera that did not yield results in CF tests because of anticomplementary activity. Zebra and donkeys, both potential subclinical carrier animals in Africa, contained AHSV or EEV antibodies. Some sera reacted with 1 of the 2 orbiviruses, whereas others reacted with both. The ELISA can be used in projected epidemiological studies in which many serum samples must be assayed.

Suicidal Behavior in German Adolescents

2015 ◽  
Vol 43 (1) ◽  
pp. 39-45 ◽  
Author(s):  
Joana Straub ◽  
Ferdinand Keller ◽  
Nina Sproeber ◽  
Michael G. Koelch ◽  
Paul L. Plener
Keyword(s):  
Suicidal Behavior ◽  
Suicide Attempts ◽  
Depression Scale ◽  
Epidemiological Studies ◽  
Present Sample ◽  
Manic Symptoms ◽  
Symptoms Of Depression ◽  
Adolescent Sample ◽  
History Of ◽  
Sum Scores

Objective: Research in adults has identified an association between bipolar disorder and suicidal behavior. This relationship, however, has been insufficiently investigated in adolescents to date. Methods: 1,117 adolescents from 13 German schools (mean age = 14.83, SD = .63; 52.7% females) completed an extended German version of the Center for Epidemiological Studies Depression Scale (CES-D), which assesses depressive and manic symptoms during the last week, as well as the Self-Harm Behavior Questionnaire (SHBQ) for the assessment of lifetime suicidal behavior. Results: In the present sample 39.4% of the girls and 23.1% of the boys reported lifetime suicidal thoughts and 7.1% of the girls as well as 3.9% of the boys a lifetime history of suicide attempts. 18.7% of the adolescent sample revealed elevated symptoms of depression and 9% elevated levels of mania symptoms. Elevated sum scores of depression and mania were associated with a higher number of suicidal ideations and suicide attempts. A block-wise regression analysis revealed that sum scores of depression and mania predicted suicidal ideations best. Concerning suicide attempts, the best predictors were age as well as depression and mania sum scores. Conclusions: Suicidal behavior was reported more often when adolescents demonstrate symptoms of mania as well as symptoms of depression than when they demonstrate only depressive symptoms. The presence of bipolar symptoms in adolescents should alert clinicians to the heightened possibility of suicidal behavior.

Zur Anwendung der CES-D bei älteren Menschen: Dimensionsstruktur und Meßartefakte

Diagnostica ◽  
2000 ◽  
Vol 46 (1) ◽  
pp. 29-37 ◽  
Author(s):  
Herbert Matschinger ◽  
Astrid Schork ◽  
Steffi G. Riedel-Heller ◽  
Matthias C. Angermeyer
Keyword(s):  
Mental State ◽  
Latent Class ◽  
Mini Mental State Examination ◽  
Depression Scale ◽  
Epidemiological Studies ◽  
Partial Credit ◽  
Examination Score ◽  
State Examination

Zusammenfassung. Beim Einsatz der Center for Epidemiological Studies Depression Scale (CES-D) stellt sich das Problem der Dimensionalität des Instruments, dessen Lösung durch die Konfundierung eines Teilkonstruktes (“Wohlbefinden”) mit Besonderheiten der Itemformulierung Schwierigkeiten bereitet, da Antwortartefakte zu erwarten sind. Dimensionsstruktur und Eignung der CES-D zur Erfassung der Depression bei älteren Menschen wurden an einer Stichprobe von 663 über 75-jährigen Teilnehmern der “Leipziger Langzeitstudie in der Altenbevölkerung” untersucht. Da sich die Annahme der Gültigkeit eines partial-credit-Rasch-Modells sowohl für die Gesamtstichprobe als auch für eine Teilpopulation als zu restriktiv erwies, wurde ein 3- bzw. 4-Klassen-latent-class-Modell für geordnete Kategorien berechnet und die 4-Klassen-Lösung als den Daten angemessen interpretiert: Drei Klassen zeigten sich im Sinne des Konstrukts “Depression” geordnet, eine Klasse enthielt jene Respondenten, deren Antwortmuster auf ein Antwortartefakt hinwiesen. In dieser Befragtenklasse wird der Depressionsgrad offensichtlich überschätzt. Zusammenhänge mit Alter und Mini-Mental-State-Examination-Score werden dargestellt. Nach unseren Ergebnissen muß die CES-D in einer Altenbevölkerung mit Vorsicht eingesetzt werden, der Summenscore sollte nicht verwendet werden.

Epidemiological Trends in Attempted Suicide in Adolescents and Young Adults Between 1996 and 2004

Crisis ◽  
2009 ◽  
Vol 30 (3) ◽  
pp. 115-119 ◽  
Author(s):  
Stephanie De Munck ◽  
Gwendolyn Portzky ◽  
Kees Van Heeringen
Keyword(s):  
Young Adults ◽  
Attempted Suicide ◽  
Suicide Attempts ◽  
Epidemiological Studies ◽  
Adolescents And Young Adults ◽  
University Hospital ◽  
International Studies ◽  
Suicide Attempters ◽  
Increased Risk ◽  
Epidemiological Trends

Background: Notwithstanding the epidemiological studies indicating an increased risk of attempted suicide among adolescents and young adults, there is a scarcity of international studies that examine long-term epidemiological trends in rates and characteristics of this vulnerable group. Aims: This article describes the results of a 9-year monitoring study of suicide attempts in adolescents and young adults referred to the Accident and Emergency Department of the Gent University Hospital (Belgium). Methods: Between January 1996 and December 2004, trends, sociodemographic, and methodrelated characteristics of suicide attempts were assessed by a psychiatrist on data sheets. Results: Attempted suicide rates declined from 1996 to 2001 and then rose until 2004, but did not exceed previous rates. During the 9 years of monitoring, there was a preponderance of female suicide attempters, except for 1997. Rates of attempts and of fatal suicide were negatively correlated. Significantly more males than females deliberately injured themselves. Younger attempters, especially females, significantly more often poisoned themselves with analgesics. In nearly one in five attempts, alcohol was used in combination with other methods, and alcohol intake was more commonly observed in older suicide attempters. Nearly half of the adolescents were identified as repeaters. Conclusions: The results of this study warrant further monitoring of trends and characteristics of young suicide attempters.

Family-, Media-, and School-Related Risk Factors of Video Game Addiction

2013 ◽  
Vol 25 (3) ◽  
pp. 118-128 ◽  
Author(s):  
Florian Rehbein ◽  
Dirk Baier
Keyword(s):  
Risk Factors ◽  
Video Game ◽  
Age Groups ◽  
Well Being ◽  
Epidemiological Studies ◽  
Prevention Measures ◽  
School Life ◽  
Video Game Addiction ◽  
Effective Prevention ◽  
Game Addiction

In recent years, a variety of epidemiological studies have provided empirical data on the prevalence of video game addiction (GA) in different age groups. However, few studies investigated the causes of GA and could explain why video game playing as a widespread phenomenon leads to a comparatively small percentage of addicted players. Additionally, the existing longitudinal studies mainly consider psychological trait variables and neglect the possible explanatory value of predictors in socialization regarding media availability, media use, and family and everyday school life. In this paper, the results of a two-wave longitudinal study comprising a sample of students from Grades 4 to 9 (N = 406) are presented. The data show that 15-year-old video game addicts had already exhibited a number of specific risk factors at the age of 10. Students from single-parent families seem to be particularly at risk, as are students with low experienced school well-being and with a weaker social integration in class. The data also indicate that problematic use of video games in childhood increases the risk of GA in adolescence. Male students are especially vulnerable for developing GA. The results of this study are an important contribution to understanding risk factors for GA in adolescents, thereby laying the groundwork for effective prevention measures.

Center for Epidemiological Studies-Depression--Greek Version

2001 ◽  
Author(s):  
Konstantinos Fountoulakis ◽  
Apostolos Iacovides ◽  
Soula Kleanthous ◽  
Stavros Samolis ◽  
Stergious G. Kaprinis ◽  
...  
Keyword(s):  
Epidemiological Studies ◽  
Greek Version
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