Table 3.

Measures of lactate kinetics and their association with 28-day mortality

Characteristics	Dead at day 28, 33/260 (12.7%)	Alive at day 28, 227/260 (87.3%)	P*
Initial lactate, mmol/L	3.66 (2.00–7.10)	2.33 (1.44–3.44)	0.002
Second lactate, mmol/L	2.78 (1.56–5.22)	1.78 (1.22–2.67)	0.001
Lactate clearance time, h	6 (4–14)	6 (5–11)	0.481
Absolute lactate clearance, mmol/L	0.55 (0.00–1.88)	0.33 (−0.22 to 1.44)	0.186
Relative lactate clearance, %	17.5 (−0.11 to 39.1)	17.7 (−11.2 to 45.4)	0.778
Lactate clearance rate, %/h	2.84 (−0.01 to 6.64)	1.90 (−1.48 to 6.79)	0.353

^*P values were provided by Mann-Whitney U test.

Values represent median (IQR).