Table 2.
Adjusted percentage changes (95% CI) in serum alanine aminotransferase (ALT) activitya with quintile changes in serum selenium levels in the survey-weighted multivariable-adjusted linear regressions (n=3,827).
| Quintiles of serum selenium levels, μg/L | ||||||
|---|---|---|---|---|---|---|
| Models | Quintile 1 (58.1–114.9) | Quintile 2 (115.0–123.6) | Quintile 3 (123.7–131.7) | Quintile 4 (131.8–142.4) | Quintile 5 (142.5–297.9) | P-trend |
| Initial modelb | Ref | −3.18 (−9.29, 3.34) | 3.01 (−2.48, 8.81) | 3.68 (−1.98, 9.66) | 9.53 (2.93, 16.56) | 0.0005 |
| Full modelc | Ref | −2.67 (−8.65, 3.71) | 3.71 (−1.71, 9.43) | 4.16 (−0.89, 9.47) | 9.25 (2.23, 16.76) | 0.0003 |
a
ALT activity was log-transformed.
b
Initial model: adjustments for age, sex, race/ethnicity, and NHANES survey cycles.
c
Full model: initial model with additional adjustments for education, poverty-income-ratio, body mass index, smoking status, and alcohol consumption.