Trends in the surgical procedures of women with incident breast cancer in Catalonia, Spain, over a 7-year period (2005-2011).

BACKGROUND: Breast cancer (BC) is the most frequent cancer in women, accounting for 28% of all tumors among women in Catalonia (Spain). Mastectomy has been replaced over time by breast-conserving surgery (BCS) although not as rapidly as might be expected. The aim of this study was to assess the evolution of surgical procedures in incident BC cases in Catalonia between 2005 and 2011, and to analyze variations based on patient and hospital characteristics. METHODS: We processed data from the Catalonian Health Service's Acute Hospital Discharge database (HDD) using ASEDAT software (Analysis, Selection and Extraction of Tumor Data) to identify all invasive BC incident cases according to the codes 174.0-174.9 of the International Classification of Diseases, Ninth Revision, Clinical Modification (ICD-9-CM) that were attended for the one-year periods in 2005, 2008 and 2011. Patients were classified according to surgical procedures (BCS vs mastectomy, and immediate vs delayed reconstruction), and results were compared among periods according to age, stage, comorbidity and hospital level. RESULTS: BC surgical procedures were performed in more than 80% of patients. Surgical cases showed a significant increasing trend in the proportion of women aged 50-69 years, more advanced disease stages, higher comorbidity and they were attended in hospitals of less complexity level throughout the study period. Similar pattern was found for patients treated with BCS, which increased significantly from 67.9% in 2005 to 74.0% in 2011.Simple lymph node removal increased significantly (from 48.8% to 71.4% and from 63.6% to 67.8% for 2005 and 2011 in conservative and radical surgery, respectively). A slightly increase in the proportion of mastectomized young women (from 28% in 2005 to 34% in 2011) was detected, due to multiple factors. About 22% of women underwent post-mastectomy breast reconstruction, this being mostly immediate. CONCLUSIONS: The use of HDD linked to the ASEDAT allowed us to evaluate BC surgical treatment in Catalonia. A consolidating increasing trend of BCS was observed in women aged 50-69 years, which corresponds with the pattern in most European countries. Among the mastectomized patients, immediate breast reconstructions have risen significantly over the period 2005-2011.

[Automatization of a hospital-based tumor registry]. / Automatización de un registro hospitalario de tumores.

INTRODUCTION: To increase data reliability and reduce the costs associated with the HTR, the Catalan Institute of Oncology programmed the manual procedures of data collection from databases by means of a computer application (ASEDAT). MATERIAL AND METHOD: ASEDAT detects the incident tumors of the registry from the databases of the pathology records (PR) and discharge records (DR) and selects the basic information from both databases. Data from the HTR data was collected for the period 1999-2000 by means of 2 procedures: manual and automatized collection and the results obtained were compared. RESULTS: 10,498 cancer patients were detected. Manual resolution detected 8,309 incident tumors and 2,374 prevalent tumors. ASEDAT automatically detected 8,901 patients (84.8%), in whom 8,367 incident tumors were detected (58 more tumors than the manual procedure). Validation of agreement was performed in the incident tumors detected by both methods (7,063 tumors). In 6,185 tumors (87.6%) the information agreed in all the variables. Of the discordant tumors, 692 (9.8%) were obtained by the RHT staff using manual resolution, and the remainder (186; 2.6%) were obtained by the application (automatic resolution). CONCLUSIONS: Cancer registry automatization is feasible when PR and DR databases are available, coded and automatized.

Automatización de un registro hospitalario de tumores / Automatización de un registro hospitalario de tumores

Introducción: El Instituto Catalán de Oncología automatizó los procedimientos manuales de captación de la información de las bases de datos del alta hospitalaria (AH) y anatomía patológica (APA) mediante una aplicación informática (ASEDAT) con el objetivo de aumentar la fiabilidad de los datos y reducir los costes del Registro Hospitalario de Tumores (RHT). Material y método: ASEDAT detecta los tumores incidentes del centro a partir de las bases de datos de APA y de las AH mediante la selección de la información básica para cada uno de ellos. Se resolvió el RHT para el período 1999-2000 mediante el procedimiento manual y automatizado, y se compararon entre sí los resultados. Resultados: Se detectaron 10.498 pacientes oncológicos. La resolución manual detectó 8.309 tumores incidentes y 2.374 tumores prevalentes. ASEDAT resolvió automáticamente 8.901 pacientes (84,8%), en los cuales se detectaron 8.367 tumores incidentes, 58 tumores más que con el procedimiento manual. La validación de la concordancia se realizó en los tumores incidentes detectados por ambos métodos (7.063 tumores). En 6.185 tumores (87,6%), la información coincidió en todas las variables. De los tumores discordantes, 692 (9,8%) fueron generados por el personal del RHT en la resolución manual y el resto (n = 186; 2,6%) por la aplicación (resolución automática). Conclusiones: La automatización de un registro de cáncer es posible siempre y cuando el centro disponga de las bases de datos de APA y AH codificadas e informatizadas

Introduction: To increase data reliability and reduce the costs associated with the HTR, the Catalan Institute of Oncology programmed the manual procedures of data collection from databases by means of a computer application (ASEDAT). Material and method: ASEDAT detects the incident tumors of the registry from the databases of the pathology records (PR) and discharge records (DR) and selects the basic information from both databases. Data from the HTR data was collected for the period 1999-2000 by means of 2 procedures: manual and automatized collection and the results obtained were compared. Results: 10,498 cancer patients were detected. Manual resolution detected 8,309 incident tumors and 2,374 prevalent tumors. ASEDAT automatically detected 8,901 patients (84.8%), in whom 8,367 incident tumors were detected (58 more tumors than the manual procedure). Validation of agreement was performed in the incident tumors detected by both methods (7,063 tumors). In 6,185 tumors (87.6%) the information agreed in all the variables. Of the discordant tumors, 692 (9.8%) were obtained by the RHT staff using manual resolution, and the remainder (186;2.6%) were obtained by the application (automatic resolution). Conclusions: Cancer registry automatization is feasible when PR and DR databases are available, coded and automatized

[Automatic calculation of relative survival through the web. The WAERS project of the Catalan Institute of Oncology]. / Cálculo automatizado de la supervivencia relativa vía web. El proyecto WAERS del Instituto Catalán de Oncología.

The most commonly used measure to estimate cancer survival is relative survival, defined as the ratio between observed and expected survival. Expected survival is computed on the basis of the mortality of a reference population. Mortality tables for the general population are not always available and their calculation requires specific software. For that purpose, the Catalan Institute of Oncology developed WAERS (Web-Assisted Estimation of Relative Survival), a web-based application that estimates the relative survival for a cohort of patients. The user prepares data in a specific format and sends them to a remote server located at the Catalan Institute of Oncology. This server computes relative survival and returns a file with the results to the electronic address supplied by the user. By means of this application, hospital- and population-based Spanish cancer registries and registries of other diseases can estimate relative survival of their cohorts using their reference population (province or autonomous community). This application could also be useful for cohort mortality studies.

Cálculo automatizado de la supervivencia relativa vía web. El proyecto WAERS del Instituto Catalán de Oncología / Automatic calculation of relative survival through the web. The WAERS project of the Catalan Institute of Oncology

La medida utilizada habitualmente para estimar la supervivencia del cáncer es la supervivencia relativa, definida como el cociente entre la supervivencia observada y la esperada. La supervivencia esperada se calcula a partir de la mortalidad de una población de referencia. La disponibilidad y la preparación de tablas de mortalidad de la población general no es siempre posible y requiere software específico para su cálculo. A tal efecto, el Instituto Catalán de Oncología (ICO)ha desarrollado la aplicación WAERS, una aplicación web que proporciona la estimación de la supervivencia relativa para una cohorte de pacientes. El usuario debe preparar los datos en un formato específico y enviarlos a un servidor remoto que se encuentra en el ICO. Este servidor calcula la supervivencia relativa y devuelve los resultados en un fichero a una dirección que ha indicado el usuario. Mediante esta aplicación, los registros de cáncer de base hospitalaria y poblacional y los registros de otras enfermedades pueden estimar la supervivencia relativa de sus cohortes seleccionando a la población de referencia que consideren (provincia o comunidad autónoma). También puede ser útil para estudios de mortalidad en cohortes

The most commonly used measure to estimate cancer survivalis relative survival, defined as the ratio between observed and expected survival. Expected survival is computed on the basis of the mortality of a reference population. Mortality tables for the general population are not always available and their calculation requires specific software. For that purpose,the Catalan Institute of Oncology developed WAERS (Web-Assisted Estimation of Relative Survival), a web-based application that estimates the relative survival for a cohort of patients. The user prepares data in a specific format and sends them to a remote server located at the Catalan Institute of Oncology. This server computes relative survival and returns afile with the results to the electronic address supplied by theuser. By means of this application, hospital- and population-based Spanish cancer registries and registries of other diseases can estimate relative survival of their cohorts using their reference population (province or autonomous community). This application could also be useful for cohort mortality studies