OBJECTIVE: To evaluate the viability of a probabilistic record linkage strategy to identify patients who underwent complex cardiology procedures among the total deceased population. METHODS: The processing cost was estimated based on 1,672 records of patients undergoing coronary artery bypass grafting that were compared with all death records in Brazil in 2005. The accuracy of the linkage strategy was based on the probabilistic linkage of 99 hospital admissions records of patients, with known vital status, who underwent cardiac surgery at a single cardiology institute, with the death records of the state of Rio de Janeiro, Southeastern Brazil, in 2005. Linkage was conducted in four stages: standardizing the databases, blocking, matching, and rating peers. Blocking in five steps was used, with blocking keys formed by a combination of variables such as Soundex codes for the first and last names, sex, and year of birth. The variables used for matching were "full name" with the use of Levenshtein distance and "birth date". RESULTS: The second and fifth blocking steps resulted in the largest number of formed pairs and the largest processing times for the matching. The fourth step required a lower processing cost. In the accuracy study, after five blocking steps, the sensitivity of the linkage was 90.6%, and the specificity was 100%. CONCLUSIONS: The probabilistic strategy used has high accuracy and can be used in studies of the effectiveness of high-complexity, high-cost cardiology procedures.
OBJECTIVE: To evaluate the viability of a probabilistic record linkage strategy to identify patients who underwent complex cardiology procedures among the total deceased population. METHODS: The processing cost was estimated based on 1,672 records of patients undergoing coronary artery bypass grafting that were compared with all death records in Brazil in 2005. The accuracy of the linkage strategy was based on the probabilistic linkage of 99 hospital admissions records of patients, with known vital status, who underwent cardiac surgery at a single cardiology institute, with the death records of the state of Rio de Janeiro, Southeastern Brazil, in 2005. Linkage was conducted in four stages: standardizing the databases, blocking, matching, and rating peers. Blocking in five steps was used, with blocking keys formed by a combination of variables such as Soundex codes for the first and last names, sex, and year of birth. The variables used for matching were "full name" with the use of Levenshtein distance and "birth date". RESULTS: The second and fifth blocking steps resulted in the largest number of formed pairs and the largest processing times for the matching. The fourth step required a lower processing cost. In the accuracy study, after five blocking steps, the sensitivity of the linkage was 90.6%, and the specificity was 100%. CONCLUSIONS: The probabilistic strategy used has high accuracy and can be used in studies of the effectiveness of high-complexity, high-cost cardiology procedures.
Authors: Regina Maria de Aquino Xavier; Vitor Manuel Pereira Azevedo; Paulo Henrique Godoy; Arn Migowski; Antonio Luiz Pinho Ribeiro; Rogério Brant Martins Chaves; Marcelo Goulart Correia; Carolina de Aquino Xavier; Lucas de Aquino Hashimoto; Clara Weksler; Nelson Albuquerque Souza E Silva Journal: BMC Cardiovasc Disord Date: 2017-12-28 Impact factor: 2.298
Authors: Arn Migowski; Antonio Luiz Ribeiro; Marilia Sá Carvalho; Vitor Manuel Pereira Azevedo; Rogério Brant Martins Chaves; Lucas de Aquino Hashimoto; Carolina de Aquino Xavier; Regina Maria de Aquino Xavier Journal: BMC Cardiovasc Disord Date: 2015-03-13 Impact factor: 2.298
Authors: M Sanni Ali; Maria Yury Ichihara; Luciane Cruz Lopes; George C G Barbosa; Robespierre Pita; Roberto Perez Carreiro; Djanilson Barbosa Dos Santos; Dandara Ramos; Nivea Bispo; Fabiana Raynal; Vania Canuto; Bethania de Araujo Almeida; Rosemeire L Fiaccone; Marcos E Barreto; Liam Smeeth; Mauricio L Barreto Journal: Front Pharmacol Date: 2019-09-23 Impact factor: 5.810