Table 2.

Distribution of urine protein-to-creatinine ratio measurements overall and relative to AKI episodes

	Total, n=2048
	AKI during Follow-Up, n=324	Non-AKI during Follow-Up, n=1724
No. of urine protein-to-creatinine ratio measurements overall
Mean (±SD) no. of urine protein-to-creatinine ratio measurements	6 (±3)	5 (±3)
Median [interquartile range] number of urine protein-to-creatinine ratio measurements	5 [4–7]	5 [3–7]
Urine protein-to-creatinine ratio measurements relative to AKI episode
Number of urine protein-to-creatinine ratio measurements pre-AKI
Mean (±SD)	3 (±2)
Median [interquartile range]	2 [1–3]
Time between last pre-AKI urine protein-to-creatinine ratio and AKI episode
Mean (±SD) days	199 (±131)
Median [interquartile range] days	190 [100–283]
No. of urine protein-to-creatinine ratio measurements post-AKI
Mean (±SD)	3 (±2)
Median [interquartile range]	2 [1–3]
Time between AKI episode and first post-AKI urine protein-to-creatinine ratio
Mean (±SD) days	194 (±138)
Median [interquartile range] days	170 [96–265]