14 research outputs found
HOG PRICES RECEIVED AND THE VALUE OF INFORMATION: A LOGIT ANALYSIS
The study discussed in this paper integrates the economics of information, production theory, and the theory of human capital to determine the optimum amount of price information collected by profit maximizing hog producers.Livestock Production/Industries,
Living alone is a risk factor for mortality in men but not women from the general population: a prospective cohort study
During the past decades a rising trend of living alone can be observed in the population especially in urban areas. Living alone is considered a psychosocial risk factor. We studied the relationship between living alone, cardiovascular risk factors and mortality. We analysed data from the population-based MONICA/KORA cohort study including 3596 men and 3420 women of at least one of three surveys carried out between 1984 and 1995 in the region of Augsburg, Germany. They were between 45 and 74 years old and were followed-up until 31 December 2002. During follow-up 811 men and 388 women died. Cox proportional hazards analysis was used to examine the association between living alone and mortality
HOG PRICES RECEIVED AND THE VALUE OF INFORMATION: A LOGIT ANALYSIS
The study discussed in this paper integrates the economics of information, production theory, and the theory of human capital to determine the optimum amount of price information collected by profit maximizing hog producers
German and international studies on SARS-CoV-2 seroprevalence
Since the beginning of the year 2020, the SARS-CoV-2 coronavirus has spread globally at a tremendous pace. Studies
on the prevalence of SARS-CoV-2 antibodies in the population help estimate the number of people that have already
been infected. They also allow an estimate of the number of undetected infections i.e. infections that do not appear in
data on officially reported cases. The interpretation of study results needs to consider bias from selective sampling and
the diagnostic test properties. To promote networking and co-operation between scientists, the Robert Koch Institute
has compiled an overview of the seroepidemiological studies conducted in Germany on its website, which is regularly
updated. The RKI conducts searches, for example of press releases, study registry entries or preprint server publications,
and contacts the lead investigators of these studies. Of the 40 studies contacted so far, 24 have already provided
information (as of 25.06.2020). We can differentiate between studies of the general population, of selected population
groups such as healthcare workers, or of ongoing cohorts. This article provides an overview of such studies from Germany,
but also of selected international studies. A special focus is set on studies of children and adolescents, which are now
of particular interest due to the planned reopening of childcare facilities and schools.Peer Reviewe
Studien zur SeroprÀvalenz von SARS-CoV-2 in Deutschland und international
Seit Beginn des Jahres 2020 hat sich das Coronavirus SARS-CoV-2 in rasantem Tempo weltweit ausgebreitet. Studien
zur HÀufigkeit von Antikörpern gegen SARS-CoV-2 in der Bevölkerung dienen dazu, den Anteil der Personen mit einer
bereits durchgemachten Infektion zu ermitteln. AuĂerdem sollen sie RĂŒckschlĂŒsse auf die Dunkelziffer, das heiĂt die
anhand von Meldedaten nicht identifizierten Infektionen, liefern. FĂŒr eine Einordnung der Ergebnisse sind
stichprobenbedingte Verzerrungen und Leistungsparameter der verwendeten Tests zu berĂŒcksichtigen. Das Robert Koch-
Institut stellt auf seiner Webseite eine Ăbersicht seroepidemiologischer Studien in Deutschland zusammen, die laufend
aktualisiert wird, um die wissenschaftliche Vernetzung und Kooperation zu unterstĂŒtzen. Dazu werden nach einer
Recherche, etwa in Pressemitteilungen, StudienregistereintrÀgen oder Vorabpublikationen, die Studienleitungen kontaktiert.
Von den 40 angeschriebenen Studien hatten innerhalb kurzer Zeit 24 Studien Informationen zur VerfĂŒgung gestellt.
Es kann zwischen Studien in der Allgemeinbevölkerung, in ausgewÀhlten Bevölkerungsgruppen wie Gesundheitspersonal
oder innerhalb bestehender Kohortenstudien differenziert werden. Der vorliegende Beitrag gibt einen Ăberblick ĂŒber
diese nationalen, aber auch ausgewÀhlte internationale Studien. Auf Studien zu Kindern und Jugendlichen, denen mit
Blick auf die Wiederaufnahme des Regelbetriebs in Kinderbetreuungseinrichtungen und Schulen ein besonderes Interesse
entgegengebracht wird, wird gesondert eingegangen.Peer Reviewe