Table 3 Odds ratio for incident cancer by quartile of selenium
From: Serum selenium level and cancer risk: a nested case-control study
Selenium level (μg/L) | Cases n (%) | Controls n (%) | Univariate OR (95%CI) | P | Multivariatea OR (95%CI) | P |
|---|---|---|---|---|---|---|
All cancers | ||||||
≤ 70 | 30 (30.9%) | 30 (16.3%) | 2.48 (1.23–4.99) | 0.01 | 2.60 (1.26–5.35) | 0.01 |
70.01–80 | 33 (34.0%) | 82 (44.6%) | 1.00 (0.53–1.87) | 0.99 | 1.13 (0.59–2.16) | 0.72 |
80.01–90 | 23 (23.7%) | 57 (31.0%) | 1.00 (reference) | 1.00 (reference) | ||
> 90 | 11 (11.3%) | 15 (8.2%) | 1.82 (0.73–4.54) | 0.20 | 1.63 (0.63–4.19) | 0.30 |
Breast cancer | ||||||
≤ 70 | 15 (28.3%) | 30 (16.3%) | 2.19 (0.92–5.20) | 0.18 | 2.42 (1.00–5.89) | 0.05 |
70.01–80 | 18 (34.0%) | 82 (44.6%) | 0.96 (0.44–2.12) | 0.92 | 1.13 (0.50–2.55) | 0.76 |
80.01–90 | 13 (24.5%) | 57 (31.0%) | 1.00 (reference) | 1.00 (reference) | ||
> 90 | 7 (13.2%) | 15 (8.2%) | 2.05(0.69–6.03) | 0.19 | 1.94 (0.64–5.88) | 0.24 |