ABSTRACT
OBJECTIVES: Night shift work has been classified as a probable human carcinogen by the International Agency for Research on Cancer, based on experimental studies and limited evidence on human breast cancer risk. Evidence at other cancer sites is scarce. We evaluated the association between night shift work and stomach cancer risk in a population-based case-control study. METHODS: A total of 374 incident stomach adenocarcinoma cases and 2481 population controls were included from the MCC-Spain study. Detailed data on lifetime night shift work were collected including permanent and rotating shifts, and their cumulative duration (years). Adjusted unconditional logistic regression models were used in analysis. RESULTS: A total of 25.7% of cases and 22.5% of controls reported ever being a night shift worker. There was a weak positive, non-significant association between ever having had worked for at least 1â year in permanent night shifts and stomach cancer risk compared to never having worked night shifts (OR=1.2, 95% CI 0.9 to 1.8). However, there was an inverse 'U' shaped relationship with cumulative duration of permanent night shifts, with the highest risk observed in the intermediate duration category (OR 10-20â years=2.0, 95% CI 1.1 to 3.6) (p for trend=0.19). There was no association with ever having had worked in rotating night shifts (OR=0.9, 95% CI 0.6 to 1.2) and no trend according to cumulative duration (p for trend=0.68). CONCLUSION: We found no clear evidence concerning an association between night shift work and stomach cancer risk.
Subject(s)
Adenocarcinoma/etiology , Circadian Rhythm , Occupational Diseases/etiology , Occupational Exposure/adverse effects , Stomach Neoplasms/etiology , Work Schedule Tolerance , Aged , Case-Control Studies , Female , Humans , Logistic Models , Male , Middle Aged , Odds Ratio , Risk Factors , SpainABSTRACT
La ficha de vigilancia de la salud de los trabajadores expuestos a amianto del anexo V del Real Decreto 396/2006, sobre riesgo de amianto, es una importante fuente de información sobre los efectos para la salud de la exposición a amianto. Sobre una muestra de 400 fichas cumplimentadas por los servicios de prevención, se ha evaluado la exhaustividad de la cumplimentación de los datos mediante el recuento y el cálculo de los porcentajes observados de los ítems correctamente cumplimentados. La exhaustividad de la cumplimentación de los datos es en general baja, especialmente en lo que se refiere a datos de identificación personal, historia laboral y resultados de la exploración radiológica. La insuficiente exhaustividad de los datos de la ficha dificulta el conocimiento sobre el impacto y los efectos sobre la salud de la exposición a amianto(AU)
The medical record form included in Spanish Royal Decree 396/2006 (Annex 5), regulating health protection for workers exposed to asbestos, is an important source of information on the health effects of asbestos exposure. The frequency and percentage of correctly filled data was assessed in a sample of 400 medical records. Overall, data completeness was low, especially regarding individual identification data, occupational history and results of radiographic studies. The poor completeness of recorded data hinders accurate knowledge of the impact and effects of asbestos on Spanish workers health(AU)
Subject(s)
Humans , Male , Female , Health Surveillance Services , Surveillance of the Workers Health , Surveillance of Working Environment , Occupational Health/legislation & jurisprudence , Occupational Health/trends , Asbestos/adverse effects , Asbestos/toxicity , Vital Statistics , Research Report/standards , Research Report/legislation & jurisprudenceABSTRACT
The medical record form included in Spanish Royal Decree 396/2006 (Annex 5), regulating health protection for workers exposed to asbestos, is an important source of information on the health effects of asbestos exposure. The frequency and percentage of correctly filled data was assessed in a sample of 400 medical records. Overall, data completeness was low, especially regarding individual identification data, occupational history and results of radiographic studies. The poor completeness of recorded data hinders accurate knowledge of the impact and effects of asbestos on Spanish workers' health.
Subject(s)
Asbestosis/etiology , Medical Records , Occupational Diseases/etiology , Occupational Exposure/adverse effects , Asbestosis/prevention & control , Humans , Occupational Diseases/prevention & control , SpainABSTRACT
Contiene: principios básicos de los reconocimientos médicos preventivos para trabajadores, vigilancia sanitaria de los trabajadores, vigilancia sanitaria y control biológico de productos químicos específicos, reconocimientos médicos para ocupaciones específicas, reconocimientos médicos previos, control de calidad de laboratorios.
