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. Author manuscript; available in PMC: 2021 Feb 1.
Published in final edited form as: Pediatr Nephrol. 2019 Nov 3;35(2):279–285. doi: 10.1007/s00467-019-04389-2

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]