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Indoor radon concentrations (Bq m−3) and AED (annual effective dose) of lung cancer cases and healthy controls.
| All | Lung cancer case | Healthy controls | P-value | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| n | Mean | SD | n | Mean | SD | n | Mean | SD | ||
|
Indoor radon (Bq m−3) |
155 | 106 | 80 | 77 | 109 | 82 | 78 | 103 | 79 | 0.033* |
| AED (mSv y−1) | 155 | 4.27 | 3.22 | 77 | 4.29 | 3.30 | 78 | 4.16 | 3.16 | 0.032* |
