“…In exposure assessment for occupational epidemiology, questionnaires are commonly used to collect exposure data, largely because they are simple and cost‐efficient [Nieuwenhuijsen, 2005; Perry et al, 2006]. Although other qualitative and quantitative (e.g., biomonitoring) methods for data gathering exist, questionnaire surveys are a major tool and a number of validation studies have been conducted to investigate their reliability and accuracy [Kleinman et al, 1986; Kromhout et al, 1987; Hertzman et al, 1988; Teschke et al, 1989, 2000; Owen et al, 1992; Stewart and Stewart, 1994a; Hammond et al, 1995; Benke et al, 1997; Calvert et al, 1997; Bauer et al, 1999; Tielemans et al, 1999; Quinn et al, 2001]. These include agreement analyses, such as those conducted between self‐reported exposures, expert assessments, and urine metabolites, as a result of dermal exposures to chemical hazards [Perry et al, 2006; Sembajwe, 2007].…”