title: [Analysis of factors affecting the results of assisted reproduction using a system for information mining of the SHLUK database].
abstract: OBJECTIVE
  To retrospective explorating computer analysis of data about therapeutic cycles in assisted reproduction technology (ART) to confirm applicability of system for data mining SHLUK in partial analysis of fertilisation phase of therapeutic cycle. Relations between parameters of sperm count analysis and outcome of in vitro fertilisation were analyzed.
  
  
  METHODS
  Retrospective analysis.
  
  
  METHODS
  1st Depart of Obstet. and Gynaecol., Masaryk University, Brno; FEI, VSB, Ostrava.
  
  
  METHODS
  Conditions of successful therapy in single phases of ART therapeutic cycles, were analysed using system SHLUK, which included a lot of methods for data mining. Analysis of relation between reasons and results in ART therapeutic cycles was done through method IMPL and method of group implication GRIMPL. Analysed file included data about 8516 therapeutic cycles ART in 4470 patients and data about 666 clinical pregnancies stored in electronical form in clinical data register. The model analysis of fertilisation tested relations between parameters of sperm analysis and outcome of in vitro fertilisation. Fertilisation rate (FR)--ratio of fertilized oocytes/obtained oocytes was evaluated as fertilisation stage outcome.
  
  
  RESULTS
  Significantly higher FR--60.9% was in the group with sperm concentration before preparation 41-60 mil/ml. When sperm concentration before preparation was under 10 mil/ml--FR was significantly lower--42.2%. Motility of sperm before preparation under 10%--FR was significantly lower--45.3%. Motility of sperm before preparation 41-50%--FR was significantly higher--56.9%. Significantly higher FR--minimal 56.0% was in group of examinations with sperm after preparation was 41-90%, then FR was significantly higher--53.5%. In sperm survival test, where more than 30% of sperm survive 24 hours of cocultivation with oocytes FR was significantly higher--minimal 55.9%.
  
  
  CONCLUSIONS
  Applicability of system for data mining SHLUK in the analysis of factors with influence on assisted reproduction outcome was proved. System for data mining SHLUK makes possible to define statistically significant relations between attributes of fertilisation stage of ART cycles and it is able to postulate basic hypothesis about existing reasons and results in therapeutic cycles of ART.
authors.affiliation: I. gynekologicko-porodnická klinika LF MU v Brnĕ.
authors.forename: R
authors.initials: R
authors.lastname: Hudecek
authors.forename: P
authors.initials: P
authors.lastname: Ventruba
authors.forename: I
authors.initials: I
authors.lastname: Crha
authors.forename: J
authors.initials: J
authors.lastname: Sarmanová
authors.forename: Z
authors.initials: Z
authors.lastname: Sarman
authors.forename: T
authors.initials: T
authors.lastname: Solár
mesh_terms: D003627:Data Interpretation, Statistical; D016208:Databases, Factual; D004624:Embryo Transfer / Q000706:statistics & numerical data; D005260:Female; D005306:Fertilization; D005307:Fertilization in Vitro / Q000706:statistics & numerical data*; D006801:Humans; D008297:Male; D011247:Pregnancy / Q000706:statistics & numerical data*; D013076:Sperm Count; D013081:Sperm Motility; D016896:Treatment Outcome