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Table 1 Demographic characteristics of children included before and after matchinga

From: Efficacy and safety of 6% hydroxyethyl starch 130/0.4 (Voluven) for perioperative volume replacement in children undergoing cardiac surgery: a propensity-matched analysis

  

Before matching

After matching

Variable

Group HES

HA group

D

P -value

ASD

HES group

HA group

D

P -value

ASD

(n = 1007)

(n = 488)

(nos= 1007)

(nos= 322)

(nm = 1007)

(nm = 1007)

Age (mo)

34.6 (44.1)

28.1 (36.6)

0.036

0.049

14.642

34.6 (44.1)

34.3 (44.4)

0.01

0.501

0.64733

Height (cm)

82.5 (28.1)

78.1 (25.1)

0.075

0.034

15.702

82.5 (28.1)

82.9 (28.3)

0.03

0.663

1.6333

Weight (kg)

11.5 (10.2)

9.7 (8.9)

0.094

0.009

17.825

11.5 (10.1)

11.4 (9.9)

0.036

0.490

0.96439

ASA physical status

3.0 (0.4)

3.2 (0.5)

0.195

<0.001

58.814

3.0 (0.4)

3.0 (0.4)

0.001

0.999

0.2368

Male sex (%)

543 (54)

288 (59)

0.057

0.036

11.447

543 (54)

182 (57)

0.026

0.092

5.1772

Cyanotic disease (%)

433 (43)

254 (52)

0.091

<0.001

18.477

433 (43)

138 (43)

0.005

0.297

1.0027

Redo surgery (%)

164 (16.3)

47 (9.6)

0.066

<0.001

18.014

164 (16.3)

52 (16.1)

0.002

0.655

0.53762

Hemostatic disorder (%)

29 (2.9)

11.2 (2.3)

0.006

0.464

3.7397

29 (2.9)

9 (2.7)

0.002

0.157

1.187

Preoperative cardiac failure (%)

192 (19.1)

96 (19.7)

0.006

0.782

1.5409

192 (19.1)

57 (17.9)

0.011

0.210

2.7794

Elective surgery (%)

996 (99)

473 (97)

0.016

0.038

15.785

996 (99)

319 (99)

0.002

0.317

1.759

RACHS-1 score

2.5 (0.8)

2.6 (0.8)

0.100

0.174

8.8267

2.5 (0.8)

2.5 (0.7)

0.065

0.366

1.9669

Antifibrinolytics (%)

967 (96)

473 (97)

0.003

0.5101

3.4356

967 (96)

309 (96)

0.001

0.083

1.4894

Estimated blood volume (ml)

865 (681)

737 (599)

0.051

0.001

18.755

865 (681)

857 (669)

0.011

0.438

1.2004

  1. aData are expressed as mean and standard deviation or as number and percentage. ASA, American Society of Anesthesiologists; ASD, Absolute standardized difference; D, D-statistic is the maximum difference in the empirical quantile-quantile plot, and it is sensitive to imbalance across the empirical distribution; nm, Number of matched observations; nos, Number of observations in the original sample; RACHS, Risk Adjustment for Congenital Heart Surgery.