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OBJECTIVE Few controlled studies have considered, in paediatric subjects, associations between Tourette's syndrome (TS) and psychiatric/behavioural disorders. We conducted a case-control study to verify the reproducibility of the few data published on this topic to date. METHOD Clinicians' impression (i.e. structured interviews and usual history taking),(More)
BACKGROUND Available data about oxidative status in patients with end-stage renal disease (ESRD) or on dialysis are contradictory. The present cross-sectional study aimed to investigate the role of renal insufficiency and dialysis on lipid peroxidation. To separate the effects of uraemia from dialysis-induced stress, we enrolled 26 patients with renal(More)
The complexity and variety of bibliographic data is growing, and efforts to define new methodologies and techniques for bibliometric analysis are intensifying. In this complex scenario, one of the most crucial issues is the quality of data and the capability of bibliometric analysis to cope with multiple data dimensions. Although the problem of enforcing a(More)
The opinions expressed in this paper do not necessarily reflect the position of Summary This paper provides a comparative analysis of statistical methods to evaluate the consumer perception about the quality of Services of General Interest. The evaluation of the service quality perceived by users is usually based on Customer Satisfaction Survey data and an(More)
Association rules are one of the most popular unsupervised data mining methods. Once obtained, the list of association rules extractable from a given dataset is compared in order to evaluate their importance level. The measures commonly used to assess the strength of an association rule are the indexes of support, confidence, and lift. Relative Linkage(More)
It is known that the service quality is considered as a latent variable that derive from the combination of some others independent latent variables (dimensions) (Zanella 2001). The known variables (attributes), generally expressed by an ordinal scale (items), are observed through the administration of questionnaires to the users of the service, in order to(More)
When a research infrastructure is funded and implemented, new information and new publications are created. This new information is the measurable output of discovery process. In this paper, we describe the impact of infrastructure for physics experiments in terms of publications and citations. In particular, we consider the Large Hadron Collider (LHC)(More)
A Bayesian Network is a probabilistic graphical model that represents a set of variables and their probabilistic dependencies. Formally, Bayesian Networks are directed acyclic graphs whose nodes represent variables, and whose arcs encode the conditional dependencies between the variables. Nodes can represent any kind of variable, be it a measured parameter,(More)
Association rules are one of the most popular unsupervised data mining methods. Once obtained, the list of association rules ex-tractable from a given dataset is compared in order to evaluate their importance level. The measures commonly used to assess the strength of an association rule are the indexes of support, confidence, and the lift. Relative Linkage(More)