The control of alcohol and drugs and occupational accidents at the Trains of Portugal: data analysis (o controlo de álcool e drogas e a sinistralidade laboral nos Comboios de Portugal: tratamento dos dados).

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Although the aim of reducing occupational accidents is frequently cited to justify preventive drug and alcohol testing at work, there is little statistically significant evidence of the assumed causality relationship and negative correlation between exposure to testing and subsequent accidents. Data mining of tests and accidents involving employees of a Portuguese transportation company, during recent years, searches for relations between these and other biographical variables. Preliminary results indicate that being subjected to random testing in the workplace is associated with fewer subsequent accidents that occur in the absence of such tests, and also that there is an optimum frequency of tests, above which there is no reduction of accidents to justify an increase of investment in testing.
Original languageUnknown
Title of host publicationSPOSHO '2011
Publication statusPublished - 1 Jan 2011
EventInternational Symposium on Occupational Safety and Hygiene - SHO'2011 -
Duration: 1 Jan 2011 → …


ConferenceInternational Symposium on Occupational Safety and Hygiene - SHO'2011
Period1/01/11 → …

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