title: [The value of clinical studies].
abstract: Not only to perform scientific work but also to read scientific periodicals critically some elementary basic knowledge in methodology and statistic is needed. In the present paper are given further particulars on three pairs of concept: Open and double-blind trials, Statistical significance and clinical relevance, Alpha and Beta errors.
mesh_terms: D002986:Clinical Trials as Topic; D004311:Double-Blind Method; D006801:Humans; D007099:Imipramine / Q000627:therapeutic use; D001523:Mental Disorders / Q000188:drug therapy*; D011619:Psychotropic Drugs / Q000627:therapeutic use*
chemical_list: D011619:Psychotropic Drugs; D007099:Imipramine
vernacular_title: Aussagekraft von klinischen Studien.