Table 2 Surgery-related information

 Mean duration of combined surgery (min)

62 ± 14.2

66 ± 15.3

0.6

 Mean Hgb 24 hrs after surgery (g/dl)

11.1 ± 1.1

11.9 ± 1.4

0.4

 Hgb at discharge (g/dl)

10 ± 0.8

10.6 ± 1.5

0.4

 Mean Hgb loss 24 hrs after surgery (g/dl)

3.1 ± 0.9

1.8 ± 0.7

0.0002*

 Mean Hgb loss during hospitalisation (g/dl)

4.3 ± 1.4

3.1 ± 1.3

0.01*

 Length of hospital stay (days)

15.5 ± 2.6

27.6 ± 10.1

0.006*