Prevalence and outcome of acute kidney injury, as defined by the new Kidney Disease Improving Global Outcomes guideline, in very low birth weight infants

Table 4 Outcomes, n (%) unless stated otherwise

	No AKI n = 259	Any stage AKI n = 34	P value
Length of stay in survivors: median (range)
BW ≤ 1000 g (n = 108)	82 (37-280)	112 (7-362)	0.32
BW > 1000 g (n = 184)	40 (15-149)	53 (35-137)	0.0032
Mortality of any cause
BW ≤ 1000 g (n = 108)	18 (21)	14 (58)	< 0.0011
BW > 1000 g (n = 184)	9 (5)	5 (50)	< 0.0011

¹χ² or Fisher exact test;

²Kruskal-Wallis test. Number of infants in birth weight categories is not identical in all outcomes as some data was missing. AKI: Acute kidney injury; BW: Birth weight.