Table 2

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

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


Chung et al. BMC Public Health 2012 12:87   doi:10.1186/1471-2458-12-87

Open Data