A standard questionnaire previously used by Sunthonchai
and Phoolpoksin11 was modified for use in this study. The
information was obtained via face-to-face interviews and the
scavengers were asked about their demographic characteristics,
occupational information, socioeconomic conditions,
work shifts, health status, general health impairments (accidents,
injuries, complaints, and diseases), and knowledge,
attitudes, and practices regarding self-protective behaviors.
An observation form was used to record the conditions of
scavengers’ work in relation to environmental health risk
and self-protective behaviors.