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Table 5 Excess risk of lung cancer, per WLM, by smoking status in underground fluorspar miners of known smoking status, Newfoundland, 1950–1990 [6]

From: Radon exposure and lung cancer: risk in nonsmokers among cohort studies

Smoking status Lung cancer deaths ERR/WLM 95 % CI P
Non-current 19 0.0025 0.0006–0.0093 0.03
Current 71 0.0055 0.0024–0.0168
Overall 90 0.0046 0.0020–0.0144
  1. ERR excess relative risk, WLM working level month