|
Age (years)
|
N = 381
|
Serum cystatin C (mg/L)
|
|---|
|
Median (IQR)
|
2.5th percentile (90%CI)
|
97.5th percentile (90%CI)
|
p┼
|
|---|
|
< 20
|
Male: 9
|
0.9 (0.85–1.05)
|
0.7 (0.70–0.90)
|
1.1
|
0.003
|
|
Female: 14
|
0.75 (0.70–0.80)
|
0.6 (0.60–0.70)
|
0.9
|
|
All: 23
|
0.8 (0.70–0.90)
|
0.6 (0.60–0.70)
|
1.1
|
|
[20–30]
|
Male: 95
|
0.9 (0.80–1.0)
|
0.6 (0.60–0.70)
|
1.1 (1.10–1.10)
|
< 0.001
|
|
Female: 89
|
0.7 (0.70–0.80)
|
0.6 (0.50–0.60)
|
1.0 (0.90–1.00)
|
|
All: 184
|
0.8 (0.70–0.90)
|
0.6 (0.60–0.60)
|
1.1 (1.10–1.10)
|
|
[30–40]
|
Male: 40
|
0.9 (0.80–0.90)
|
0.7 (0.70–0.80)
|
1.0 (1.00–1.00)
|
0.001
|
|
Female: 31
|
0.8 (0.60–0.80)
|
0.5 (0.50–0.50)
|
1.0
|
|
All: 71
|
0.8 (0.80–0.90)
|
0.5 (0.50–0.58)
|
1.0 (1.00–1.00)
|
|
[40–50]
|
Male: 32
|
0.9 (0.80–0.98)
|
0.7 (0.70–0.70)
|
1.1
|
0.002
|
|
Female: 21
|
0.8 (0.70–0.90)
|
0.6 (0.60–0.70)
|
1.0
|
|
All: 53
|
0.8 (0.80–0.90)
|
0.6 (0.60–0.70)
|
1.0 (1.00–1.00)
|
|
≥ 50
|
Male: 18
|
1.0 (0.88–1.0)
|
0.7 (0.70–0.80)
|
1.2
|
0.125
|
|
Female: 32
|
0.9 (0.80–0.90)
|
0.6 (0.60–0.80)
|
1.1
|
|
All: 50
|
0.9 (0.80–1.00)
|
0.7 (0.60–0.73)
|
1.2 (1.10–1.20)
|
- CI confidence interval, IQR interquartile range. Some 90% confidence intervals are not presented due to the small number of participants in corresponding age groups. ┼ The Mann-Whitney U-test was used to compare the distribution of serum cystatin C values between males and females. The difference between age-groups was significant when using the Kruskal-Wallis H-test (p < 0.001)
