Table 3.

Further analysis of postoperative lactate levels

Groups	Postoperative lactate levels
	Mean lactate levels (mmol/L) ± SD	CV	Number of subjects with normal lactate levels (n)	Proportion of subjects with normal lactate levels (%)
Met group (n=387)	1.91±0.70	36.6%	235	60.7
Non-Met group (n=239)	2.04±0.79	38.7%	133	55.6
Non-Diab group (n=164)	2.07±0.78	37.7%	85	51.8

SD: Standard deviation; CV: Coefficient of variation; defined as (SD/Mean) ×100; normal lactate levels were defined as lactate levels <2 mm/l of blood