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Fig. 1 | BMC Public Health

Fig. 1

From: Predictors of silicosis and variation in prevalence across mines among employed gold miners in South Africa

Fig. 1

Thibela TB baseline survey sampling scheme. Footnotes: CXR: Chest radiograph Non-participation: Enrolment was a two-stage process – (i) miners randomly selected from the workforce were invited to attend the study centre post-shift, and (ii) those who attended were invited to participate in the study and were enrolled after giving informed consent. (Over 90% of those who attended in stage 2 consented)

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BMC Public Health

ISSN: 1471-2458

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