Table 1.

Basic characteristics of the farmers surveyed.

Variable	Trained	Non-Trained	Statistic	Value	p	Effect Size
Age (years)	31.14	42.72	t-test	3.820	0.000	0.404
Education (0 to 4) *	2.50	1.48	Mann-Whitney U	5.194	0.000	0.574
Farm size (ha)	7.82	10.15	t-test	1.845	0.069	0.202
Membership in associations (0 to 1)	0.61	0.76	Chi-square	2.137	0.144	0.161
Episode of pesticide intoxication (0 to 1)	0.33	0.35	Chi-square	0.019	0.891	0.015
Perception of pesticide hazard (0 to 1)	0.58	0.46	Chi-square	1.30	0.254	0.126

* 0 = no education, 1 = primary education, 2 = lower secondary education, 3 = upper secondary education, 4 = tertiary education.