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Table 4 Smoker and non-smoker wise comparison for blood naphthalene concentrations (μgL-1) in occupationally exposed workers and un-exposed (control) group

From: Biological Monitoring of Blood Naphthalene Levels as a Marker of Occupational Exposure to PAHs among Auto-Mechanics and Spray Painters in Rawalpindi

Descriptive

Exposed

Un-Exposed

 

Car-Spray Painters (n = 20)

Car-Mechanics (n = 20)

Control (n = 20)

Sub-groups

Smoker

Non-smoker

Smoker

Non-smoker

Smoker

Non-smoker

Not detected (n/total)

2/12

4/8

3/9

4/11

1/3

14/17

Detected (n/total)

10/12

4/8

6/9

7/11

2/3

3/17

Median

140.3

27.0

280.9

192.3

109.5

17.7

Skewness

84.7

25.4

135.5

117.2

98.5

13.6

Minimum detected

72.8

54.1

79.1

53.7

109.6

56.0

Maximum detected

892.9

92.4

1980.6

1618.9

632.4

249.1

SMs vs NSMs*

Significant at P < 0.05

Significant at P < 0.05

Significant at P < 0.001

  1. * Mann-Whitney U-test for comparison of median values between smokers and non-smokers
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BMC Public Health

ISSN: 1471-2458

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