Combined effect of dust exposure and tobacco smoking on the occorence of lung disease in South African gold miners
Date
1991-04
Authors
Hnizdo, Eva
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Abstract
The objective of this thesis is to investigate whether tobacco smoking modifies the effect of gold mining dust exposure on the occurrence of lung diseases known, or suspected, to be causally associated with the gold mining occupation. In particular, the purpose is to ascertain whether the combined effect of dust and smoking on these diseases' occurrences is additive (i.e. the effects are independent), or synergistic (i.e. smoking increases the effect of dust), or antagonistic (i.e. smoking decreases the effect of dust).
Description
A Thesis submitted to the Faculty of Medicine University of the Witwatersrand, Johannesburg for the Degree of Doctor of Philosophy
April 1991 Johannesburg