Evidence of Allergic Reactions and Cardiopulmonary Impairments among Traders Operating from Foodstuff Warehouses

Table 5

Relationship between duration of occupational exposure to airborne pollutants and electrical activity of the heart among traders () that operated from warehouses.

Electrical activity	HR	PR-INT	QRS	P-AXIS	R-AXIS	T-AXIS	QT	QTc
Duration of exposure (years)

indicates significance at .