Table 1.

Existing studies to be included in Improving Exposure Assessment Methodologies for Epidemiological Studies on Pesticides.

Study	Project aims	Potential participants, N	Date of OQa
UK Prospective Investigation of Pesticide Applicators’ Health	Recall bias and exposure assessment	825 certified pesticide users	OQ 2016
UK Pesticide Users Health Study	Recall bias and exposure assessment	>500 certified pesticide users	OQ 2004-2006
UK Study of Health in Agricultural Work	Recall bias only	Up to 234 farmers	OQ 2002
UK Historical biomonitoring data	Recall bias only	Up to 115 pest control operatives, tree dippers, and orchard sprayers	No OQ, standardized one to be used
Malaysia	Exposure assessment only	150 small-scale farmers	No OQ
Uganda	Recall bias and exposure assessment	300 small-scale farmers	OQ 2017

^aOQ: original questionnaire.