title: [Characteristics of clinical trials in Hungary based on the analysis of an international database].
abstract: Intorduction: The ClinicalTrials.gov website, which is operated by the US government, collects data about clinical trials.
  
  
  OBJECTIVE
  We have processed data related to Hungary by downloading from the website as XML files.
  
  
  METHODS
  Most of the data describe trials performed after 2000, so we got an overview about the clinical research of the last 10 to 15 years. As the majority of the data fields are collected as free text, significant data cleaning was needed.
  
  
  RESULTS
  The database contained 2863 trials related to Hungary from 189 settlements. Only 20 per cent of the actual research organizations could have been identified as many times only an "id" number or a general name was given, thus this information was anonymised in many cases.
  
  
  CONCLUSIONS
  Besides the analysis of the information obtained from this database, our study points out the relevant issues that may influence the international view of the Hungarian clinical research. Orv. Hetil., 2017, 158(9), 345-351.
authors.affiliation: Digitális Egészségtudományi Intézet, Semmelweis Egyetem, Egészségügyi Közszolgálati Kar Pf. 2, 1428 Budapest.
authors.forename: Tamás
authors.initials: T
authors.lastname: Tóth
authors.affiliation: MTA-ELTE Statisztikus és Biológiai Fizika Kutatócsoport, Budapest.
authors.forename: Péter
authors.initials: P
authors.lastname: Pollner
authors.affiliation: MTA-ELTE Statisztikus és Biológiai Fizika Kutatócsoport, Budapest.
authors.forename: Gergely
authors.initials: G
authors.lastname: Palla
authors.affiliation: Digitális Egészségtudományi Intézet, Semmelweis Egyetem, Egészségügyi Közszolgálati Kar Pf. 2, 1428 Budapest.
authors.forename: Elek
authors.initials: E
authors.lastname: Dinya
mesh_terms: D035843:Biomedical Research / Q000706:statistics & numerical data*; D002986:Clinical Trials as Topic / Q000706:statistics & numerical data*; D016208:Databases, Factual; D005260:Female; D006801:Humans; D006814:Hungary; D008297:Male
keywords: adatbázis; clinical trial; database; information extraction; információkinyerés; klinikai vizsgálat