TABLE 3.
Selected OR estimated by subgroup.
| sIR | 25 Bq/m3 | 58 Bq/m3 (reference) | 158 Bq/m3 | ||
|---|---|---|---|---|---|
| OR | 95% CI | OR = 1 | OR | 95% CI | |
| By histology | |||||
| SCLC | 1.14 | 0.46–2.24 | Reference | 2.19 | 1.66–2.68 |
| LCLC | 1.85 | 0.11–14.1 | 2.04 | 1.42–2.67 | |
| AdenoLC | 1.22 | 0.81–1.64 | 1.54 | 1.36–1.69 | |
| SqCLC | 0.77 | 0.42–1.20 | 1.42 | 1.17–1.64 | |
| By smoking | |||||
| Never smokers | 2.17 | 1.02–3.77 | Reference | 2.14 | 1.65–2.59 |
| Former smokers | 1.04 | 0.67–1.43 | 1.77 | 1.51–1.99 | |
| Current smokers | 1.24 | 0.66–1.96 | 1.67 | 1.35–1.95 | |
| By sex | |||||
| Men | 1.35 | 0.37–3.49 | Reference | 1.92 | 1.65–2.13 |
| Women | 1.31 | 0.83–1.82 | 1.38 | 1.16–1.57 | |
| By age | |||||
| Age ≤ 60 | 1.32 | 0.62–2.29 | Reference | 1.57 | 1.30–1.81 |
| Age 60–68 | 2.47 | 1.02–4.72 | 1.85 | 1.49–2.17 | |
| Age 69–74 | 0.74 | 0.35–1.28 | 1.48 | 1.14–1.79 | |
| Age 75++ | 2.10 | 1.53–2.64 | |||
Note: sIR: mean spatial indoor radon exposure in the surrounding area; OR: average odds ratio (reference exposure level is 58 Bq/m3–LRE lowest‐risk exposure; avg. by Rubin's equation with model weights derived from ΔAIC); exposure levels of 25 Bq/m3 and 158 Bq/m3 (equivalent to LRE +100 Bq/m3) were selected as examples; all ORs are adjusted for sex, age, smoking (type: never, former and current smoker; age start smoking; time since stop smoking; pack years); 95% CI 95% confidence interval.