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Table 7 Mean hemoglobin of patients before and after surgery in the study groups

From: Surgical bleeding in patients undergoing posterior lumbar inter-body fusion surgery: a randomized clinical trial evaluating the effect of two mechanical ventilation mode types

Time

Group

Mean

SD

P value

Before surgery

VCV

13.39

1.47

0.772

PCV

13.48

1.41

After surgery

VCV

11.92

1.43

0.775

PCV

12.01

1.41