... RESEARCH Open AccessQuality of Life analysis of patients in chronic use of oral anticoagulant: an observational studyGeisa de Queiroz Almeida1*, Lúcia de ACB Noblat2, Luiz Carlos Santana Passos3 and Harrison ... concept and design, statistical analysis and data interpretation. All authors read and approved the final manuscript.Competing interestsThe authors declare that they have no competing interests.Received: ... of Bahia, Rua Augusto Viana s/n, 2° andar, Salvador, Bahia,40.110-060, Brazil.Authors’ contributionsGA contributed to study concept and design, data collections, statistical analysis, data...