Study of Heavy Metal Levels among Farmers of Muda Agricultural Development Authority, Malaysia

Table 4

Correlation between heavy metals with age and the working period of the farmers.

Heavy metal	Correlations, 𝑟
	Age	Working period
Cadmium	−0.045	0.117
Lead	0.175*	0.315**
Arsenic	0.124	0.242**

There is significant correlation between heavy metals with both working period and age (*𝑃<0.05, **𝑃<0.01).