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Table 2 Distribution of measured noise exposure in the farm machinery factory workers over the four year study observation period

From: Hearing effects from intermittent and continuous noise exposure in a study of Korean factory workers and firefighters

 

2006

2007

2008

2009

Number of samples

31

31

32

28

Mean dBA (SD)

82.48 (5.13)

82.44 (6.68)

82.46 (6.56)

82.41 (6.85)

Median dBA

82.7

83.2

83

82.3

Range dBA

70-96

66.8-92.6

66.8-97.3

71.6-98

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BMC Public Health

ISSN: 1471-2458

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