منابع مشابه
[Rare Diseases: chronic diseases that need a new approach].
The concept of Rare Diseases is relatively new. They are those processes "...that can be mortal or to cause a chronic weakening of the patient and who, due to its little prevalence, require combined efforts to treat them. For indicative purposes, a little prevalence is considered when is lesser than 5 cases per 10,000 people in the Community". The existence of these diseases is closely tied wit...
متن کاملTrials in rare diseases: the need to think differently
Background In general, large-scale clinical trials are needed to make definitive conclusions regarding changes in treatment practice. This is because treatment effects are often modest and large numbers of patients are needed to detect such differences with sufficient power for robust conclusions. Such trials are difficult and often impossible in rare diseases and their worth in this setting co...
متن کاملData Clustring Using A New CGA(Chaotic-Generic Algorithm) Approach
Clustering is the process of dividing a set of input data into a number of subgroups. The members of each subgroup are similar to each other but different from members of other subgroups. The genetic algorithm has enjoyed many applications in clustering data. One of these applications is the clustering of images. The problem with the earlier methods used in clustering images was in selecting in...
متن کاملData Clustring Using A New CGA(Chaotic-Generic Algorithm) Approach
Clustering is the process of dividing a set of input data into a number of subgroups. The members of each subgroup are similar to each other but different from members of other subgroups. The genetic algorithm has enjoyed many applications in clustering data. One of these applications is the clustering of images. The problem with the earlier methods used in clustering images was in selecting in...
متن کاملrespondent driven sampling: a new approach to sampling rare and hidden diseases
background : a detailed study of hidden and hard to reach populations in order to identify their characteristics is essential because they endanger the health of the society by their dangerous behaviors. however, sampling in these populations through conventional sampling methods is impossible due to reasons such as being hidden and lacking a precise frame. methods: in this article, applicable ...
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ژورنال
عنوان ژورنال: BMJ
سال: 2006
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.333.7568.602-a