Table 2 Cross-sectional associations of serum cystatin C and impaired kidney function with prevalent geriatric depressive symptoms (n = 1440)

 ≤ 1.00

1.00 (reference)

1.00 (reference)

1.00 (reference)

 1.01–1.25

1.43 (1.03–1.98)

1.40 (1.004–1.95)

1.41 (1.009–1.97)

 > 1.25

3.25 (2.39–4.42)

3.30 (2.40–4.50)

3.20 (2.32–4.41)

 P for trend

< 0.001

< 0.001

< 0.001

 No

1.00 (reference)

1.00 (reference)

1.00 (reference)

 Yes

3.07 (2.34–4.03)

3.03 (2.30–4.01)

2.95 (2.22–3.92)