Table 2:
Descriptive Statistics of the 107 Subjects who Contributed 113 Specimens in the IFCC Calibration Datasets
| Characteristic | Median [IQR] or n (%) | |
|---|---|---|
| First set of specimens (n=50) | Second set of specimens (n=57) | |
| Age, years | 15.9 [12.6, 19.6] | 15.5 [11.1, 19.3] |
| Male sex | 36 (72%) | 37 (65%) |
| White race | 34 (68%) | 42 (74%) |
| eGFR | 52 [42, 66] | 63 [45, 76] |
| SCr | 1.26 [0.96, 1.84] | 1.11 [0.82, 1.78] |
| Cystatin C (pre-IFCC) | 1.36 [1.02, 1.69] | 1.10 [0.90, 1.67] |
| Cystatin C (IFCC calibrated) | 1.59 [1.19, 1.98] | 1.30 [1.09, 1.90] |