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Journal of Environmental and Public Health
/
2018
/
Article
/
Tab 4
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Research Article
Carboxyhaemoglobin Levels among Traders Exposed to Vehicular Emissions in Three Motor Parks in Ibadan, Nigeria
Table 4
Comparison of % COHb among study participants within and between groups.
AMP traders
IMP traders
NMP traders
Nonmotor park traders
-value
value
% COHb
0.573
0.566
% COHb (group mean)
24.153
<
0.001