This new frequent presence out-of looks inside the work environment environments, the new high prevalence regarding blood pressure levels global, the latest physiological plausibility of your own relationship between noises coverage and you may large hypertension additionally the need for alot more degree exploring this new non-auditory results of exposures to help you below 85 dB(A), was basically the causes you to added us to write this study.
Study structure and you can population
To handle an element of the case of the new connection anywhere between audio publicity and raised blood pressure, i did a cross-sectional research design of existent supplementary health and appears publicity investigation out of 2007 regarding pros of good petrochemical and fuel refinery in the Rio de- Janeiro, Brazil.
The fresh new read tool possess two types of work force: builders (experts paid by the government) and you can sub-contractors (professionals paid from the contracted out organizations). The two workforces try subject to additional work rules and all outsourcing companies must create pre-admission and you can yearly fitness test in just about any staff. Subcontracted work force is working on the fresh bush maintenance and you can extension, if you are authorities gurus was basically significantly more working in administrative employment about bush. I used the 6-day timeframe to assure a minimum chronilogical age of appears publicity through to the analysis out of hypertension. Sigue leyendo