Table 3.
Results of analysis of covariance (ANCOVA) models between selenium tertile groups and depressive symptoms measured by GDS score adjusting for other factors (n = 1735)a
| |
Without Cognitive Score |
With Cognitive Score |
||||
|---|---|---|---|---|---|---|
| Variable | Estimate | Std Err | p-value | Estimate | Std Err | p-value |
| Age, years |
0.10 |
0.03 |
0.0002 |
0.01 |
0.03 |
0.6132 |
| Attended school vs no school |
−1.39 |
0.29 |
<0.0001 |
−0.49 |
0.29 |
0.0932 |
| Live alone |
1.35 |
0.36 |
0.0002 |
1.47 |
0.34 |
<0.0001 |
| Ever drink alcohol |
−1.03 |
0.29 |
0.0005 |
−0.74 |
0.29 |
0.0095 |
| Body mass index |
−0.12 |
0.04 |
0.0016 |
−0.05 |
0.04 |
0.1311 |
| History of stroke |
1.98 |
0.86 |
0.0209 |
1.73 |
0.83 |
0.0364 |
| History of heart attack |
3.34 |
0.80 |
<0.0001 |
3.59 |
0.78 |
<0.0001 |
| History of head injury |
2.67 |
0.72 |
0.0002 |
2.43 |
0.69 |
0.0005 |
| History of fracture |
2.92 |
1.05 |
0.0054 |
2.64 |
1.01 |
0.0091 |
| Selenium tertile group, μg/g |
|
|
|
|
|
|
| <0.32 |
0.96 |
0.35 |
0.0063 |
0.58 |
0.34 |
0.0876 |
| [0.32, 0.47) |
0.42 |
0.34 |
0.2143 |
0.29 |
0.32 |
0.3712 |
| ≥ 0.47 |
reference |
-- |
-- |
reference |
-- |
-- |
| Cognitive score quartile groups |
|
|
|
|
|
|
| Q4 (75 % to 100 %) |
|
|
|
−4.61 |
0.42 |
<0.0001 |
| Q3 (50 % to 75 %) |
|
|
|
−2.64 |
0.39 |
<0.0001 |
| Q2 (25 % to 50 %) |
|
|
|
−1.43 |
0.38 |
0.0001 |
| Q1 (0 to 25 %) | reference | -- | -- | |||
a Two subjects had missing information on history of stroke.