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. Author manuscript; available in PMC: 2019 Jan 1.

Published in final edited form as: Pediatr Nephrol. 2017 Aug 4;33(1):139–146. doi: 10.1007/s00467-017-3763-8

Table 2.

Demographics

	eGFR ≥90 mL/min/1.73m² (N=1388)	eGFR <90 mL/min/1.73m² (N=315)	P
Age, years	12.4 (7.0, 16.0)	11.1 (6.0, 16.0)	<0.001
Weight, kg	72.1 (29.5, 127.0)	47.2 (19.2, 93.5)	<0.001
Weight z-score	1.67 (−0.69, 3.52)	0.29 (−2.49, 2.76)	< 0.001
Height, cm	158.7 (126.0–183.0)	141.4 (110.0, 170.8)	<0.001
Height z-score	0.55 (−1.50, 2.57)	−0.77 (−3.29, 1.57)	<0.001
BMI^a, kg/m²	27.8 (16.6, 42.8)^a	22.3 (14.8, 37.0)	<0.001
BMI z-score^a	1.54 (−0.65, 2.81)^a	0.82 (−1.03, 2.57)	<0.001
Male	892 (64.3)	165 (52.4)	<0.001
White	791 (57.0)	152 (48.3)	<0.001
eGFR, mL/min/1.73m²	128 (94, 175)	68 (36, 89)	<0.001

Values are presented as mean (5^th, 95^th percentiles) for continuous variables and n (%) for categorical variables.

^a

1 participant was <2 years of age and did not have BMI or BMI z-score.

BMI indicates body mass index; eGFR, estimated glomerular filtration rate.