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Table 2 Mean pre-operative and post-operative hemoglobin and hematocrit by gender

From: Predictors of intra-operative blood loss and blood transfusion in orthognathic surgery: a retrospective cohort study in 92 patients

Gender N Mean SD Mean diff
Male Hemoglobin Pre 36 15.11 1.2 3.7
Post 36 11.44 2.3
Hematocrit Pre 36 44.26 3.7 10.2
Post 36 34.01 6.5
Female Hemoglobin Pre 56 12.39 1.7 3.0
Post 56 9.39 1.7
Hematocrit Pre 56 37.20 4.2 8.9
Post 56 28.30 4.6