Identification of a statistical method as a quality tool: patient's length of stay in the operating room

Guiomar Terezinha Carvalho Aranha^I; Reinaldo Wilson Vieira^II; Pedro Paulo Martins de Oliveira^III; Orlando Petrucci Junior^IV; Benedito Galvão Benze^V; Lindemberg da Mota Silveira Filho^III; Karlos Alexandre de Souza Vilarinho^III; Lívia Paschoalino de Campos^VI

DOI: 10.1590/S0102-76382009000400019

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1. Professional Master's Degree - Responsible for the Statistical Department at HC/UNICAMP. 2. Associated Full Professor - Head of the Cardiac Surgery Department at HC/UNICAMP. 3. PhD - Assistant Physician of the Cardiac Surgery Department at FCM/UNICAMP. 4. PhD - Full Professor of the Cardiac Surgery Department at FCM/UNICAMP. 5. PhD - Assistant Physician of the Cardiac Surgery Department at FCM/UNICAMP. 6. Graduate Student in Statistics at UFSCar - Graduate Student of the Statistical Department at UFSCar. Correspondence
Guiomar Terezinha Carvalho Aranha Rua Ferreira Penteado, 874/22 - 2º andar - Centro Campinas, SP, Brasil. CEP: 13010-041 E-mail: guiomar@hc.unicamp.br/gterezinha@ig.com.br