Skip to main content

Table 3 Descriptive statistics, pollution exposure variables

From: Road traffic noise and cognitive function in older adults: a cross-sectional investigation of The Irish Longitudinal Study on Ageing

Variable of exposure

Units

n

Mean ± SD

Min.

Max.

Night-time noise (Lnight)

dB (A)

1706

51.4 ± 5.1

35.7

69.3

NO2 a

μg m−3

728

15.6 ± 3.9

8.0

38.6

  1. SD denotes standard deviation.
  2. a Source: Environmental Protection Agency, Ireland
Back to article page

BMC Public Health

ISSN: 1471-2458

Contact us