An Investigation for Heavy Metals’ Contamination in Farmers’ Fingernails: Case Study in Libya

Table 3

Demographic characteristics of the control group and the participating farmers.

Demographic characteristics	Farmers	Control group
Number of participants (N)	127	25
Gender	Male	Male
Age (years)	55.98 ± 12.60	51.68 ± 6.59
Duration of working as a farmer (Years)	26.89 ± 13.57	Nil

(): Mean ± SD.