title: [Assessing Chinese herbal medicines for benefiting qi and activating blood circulation in treating unstable angina based on Markov model: a long-term clinical effectiveness exploration].
abstract: OBJECTIVE
  To assess the long-term clinical effectiveness of Chinese herbal medicines for benefiting qi and activating blood circulation (CHMBQABC) plus routine Western medical intervention in treating unstable angina (UA) patients of qi deficiency blood stasis syndrome (QDBSS) after percutaneous coronary intervention (PCI) based on Markov model.
  
  
  METHODS
  A Markov model was established based on prognosis and sequelae of UA patients after PCI treated by CHMBQABC plus routine Western medical intervention or by routine Western medical intervention. According to the transition probabilities of 40 Markov cycles and quality-adjusted life years (QALYs) averagely gained, we assessed the therapeutic advantage of CHMBQABC plus routine Western medical intervention.
  
  
  RESULTS
  By the prediction of Markov model for 20 years, the transition probabilities of revascularization, non-fatal myocardial infarction, non-fatal stroke, and all-cause death in the CHMBQABC plus routine Western medical intervention group was 56.65%, 6.53%, 5.16%, and 31.66%, respectively, and the QALYs averagely gained was 12.95; while the transition probabilities of revascularization, non-fatal myocardial infarction, non-fatal stroke, and all-cause death in the Western medical intervention group was 55.31%, 6.87%, 5.25%, and 32.57%, respectively, and the QALYs averagely gained was 12.84. Compared with the Western medical intervention group, the QALYs averagely gained was 0.11 in the CHMBQABC plus routine Western medical intervention group.
  
  
  CONCLUSIONS
  Based on predicted results of the Markov model, CHMBQABC plus routine Western medical intervention got better efficacy in treating UA patients after PCI, indicating CHMBQABC plus routine Western medical intervention could improve the long-term clinical effectiveness for UA patients of QDBSS after PCI.
authors.forename: Cheng-Long
authors.initials: CL
authors.lastname: Wang
authors.forename: Da-Zhuo
authors.initials: DZ
authors.lastname: Shi
authors.forename: Qiang
authors.initials: Q
authors.lastname: Wang
authors.forename: Shao-Li
authors.initials: SL
authors.lastname: Wang
mesh_terms: D000368:Aged; D000789:Angina, Unstable / Q000188:drug therapy*; D004365:Drugs, Chinese Herbal / Q000627:therapeutic use*; D005260:Female; D006801:Humans; D008297:Male; D008390:Markov Chains; D008875:Middle Aged; D008962:Models, Theoretical; D008517:Phytotherapy; D016896:Treatment Outcome
chemical_list: D004365:Drugs, Chinese Herbal