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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX6-253<br />

Table AX6-9.8. Effects <strong>of</strong> <strong>Lead</strong> on the Gastrointestinal System<br />

Reference, Study<br />

Location, and Period Study Description Pb Measurement Findings, Interpretation<br />

Canada<br />

Holness and Nethercott<br />

(1988)<br />

Ontario<br />

1982–1984<br />

Caribbean<br />

Matte et al. (1989)<br />

Jamaica<br />

1987<br />

Asia<br />

Bercovitz and Laufer<br />

(1991)<br />

Israel<br />

NR<br />

Design: longitudinal<br />

Subjects: adult male demolition workers<br />

(n = 119), age NR<br />

Outcome measures: prevalence <strong>of</strong> symptoms<br />

Analysis: comparison <strong>of</strong> prevalence <strong>of</strong><br />

symptoms (questionnaire) stratified by job<br />

phase or blood Pb<br />

Design: survey<br />

Subjects: battery manufacture/repair<br />

workers (n = 63), mean age ~30 yr<br />

(range 11–47)<br />

Outcome measures: prevalence <strong>of</strong> symptoms<br />

Analysis: comparison <strong>of</strong> GI symptoms<br />

(questionnaire) between blood Pb strata<br />

Design: cross-sectional<br />

Subjects: health individuals (n = 12), peptic<br />

ulcer patients (n = 11), and individuals with<br />

heart disease (n = 11) with environmental<br />

exposure<br />

Analysis: one-way ANOVA used to<br />

compare tooth Pb concentrations in the three<br />

groups<br />

Blood Pb (µg/dL) mean<br />

(range):<br />

Phase 1: 59 (15–99)<br />

Phase 2: 30<br />

Phase 3: 19<br />

Phase 4: 17<br />

Blood Pb (µg/dL)<br />

geometric mean site range:<br />

40–64<br />

Blood Pb distribution:<br />

>60: 60%<br />

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