Plasma manganese and selenium levels in paediatric chronic kidney disease patients measured by high resolution sector field inductively coupled plasma mass spectrometry

Bulletin of the National Research Centre

Table 1 Patient characteristics

Parameter	Mean or median	Range
Number of patients	42
Sex distribution	21 female and 21 male
Age	12.5 ± 4.6 years	0.6–19.0 years
Median GFR	53 mL/min/1.73 m²	15–138 mL/min/1.73 m²
Aetiology of CKD	48% glomerular and 52% non-glomerular
CKD stage	I (> 90 mL/min/1.73 m²) 10% II (60–89 mL/min/1.73 m²) 26% III (30–59 mL/min/1.73 m²) 49% IV (15–29 mL/min/1.73 m²) 15%