Table 4.
Subgroup analyses for associations between serum selenium and the risk of mortality in patients with heart failure.
| Covariates | Death/participants | HR (95% CI) | P |
|---|---|---|---|
| Sex | 0.862 | ||
| Male | 66/228 | 1.07 (1.02–1.12) | 0.007 |
| Female | 65/183 | 1.07 (1.02–1.13) | 0.004 |
| Age (years) | 0.894 | ||
| < 75 | 95/309 | 1.06 (1.02–1.10) | 0.002 |
| ≥ 75 | 36/102 | 1.11 (1.03–1.20) | 0.009 |
| BMI (kg/m2) | 0.105 | ||
| < 25 | 46/170 | 1.02 (0.96–1.08) | 0.581 |
| ≥ 25 | 85/241 | 1.09 (1.05–1.14) | < 0.001 |
| Smoking status | 0.439 | ||
| Never | 107/329 | 1.06 (1.02–1.15) | 0.001 |
| Ever | 24/82 | 1.13 (1.03–1.25) | 0.011 |
| Alcohol drinking | 0.273 | ||
| Seldom | 112/350 | 1.06 (1.02–1.10) | < 0.001 |
| Occasional or regular | 19/61 | 1.15 (1.03–1.29) | 0.016 |
Adjusted for age, sex (except in the sex-stratified analysis), body mass index, smoking (except in the smoking-stratified analysis), drinking (except in the alcohol-stratified analysis), hypertension, diabetes, chronic kidney disease, prior history of heart failure, atrial fibrillation and medication.