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GJ Churchyard, R Ehrlich, J M teWaterNaude, et al. Silicosis prevalence and exposure-response relations in South African goldminers. Occup Environ Med 2004;61:811–6.
Figure 1 in this paper overstated the silicosis prevalence in the last three strata of the bar graph owing to errors in the denominators used. Table 1 below contains the correct prevalences which replace those derivable from the published Figure 1. The interpretation of study findings remains unchanged.
Prevalence of silicosis by length of service
Correspondingly, the text on page 3 of the original publication needs to be amended as follows: “Silicosis prevalence increased significantly with increasing length of service, from 1.69% (1/59) among miners with 15 years of service or less to 32.2% (10/31) among workers with over 30 years of service (p<0.001).”