Correction: bioimpedance spectroscopy for assessment of volume status in patients before and after general anaesthesia.

There are errors in the “Results” section in the Abstract of the published article. Duration of anesthesia should read 154 ± 69 minutes, and the value for perioperative urinary excretion should read 0.3 ± 0.2 L.

The headings for Table 3 are misaligned. Please view the correct Table 3 here.

Table 3

Association between net perioperative fluid balance and changes in pre- to postoperative extracellular volume, with multiple levels of adjustments.

	Model 1: net perioperative fluid balance	Model 2: + serum albumin	Model 3: + age	Model 4: + body mass index	Model 5: + serum creatinine	Model 6: + preoperative fluid therapy	Model 7: + preoperative blood pressure	Model 8: + preoperative capillary leak index	Model 9: + postoperative capillary leak index
Outcome variable: Delta ECV
r2	0.646	0.646	0.649	0.652	0.657	0.678	0.679	0.681	0.713
p-value1 for each model	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001	<0.001
p-value2 for individual predictors	<0.001	0.845	0.479	0.435	0.330	0.046	0.639	0.540	0.011
Beta	0.804	0.014	−0.056	0.060	−0.077	−0.152	−0.049	−0.065	0.202

Multiple regression analysis: After stepwise adjustment the coefficients of determination (r2), the p-value1 for the combined effect of all predictors for each model, the p-value2 for the individual effect of a predictor and the correlation coefficient (Beta) represent the association between the outcome and the predictor variables. Boldface indicating statistical significance (p<0.05).