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Table 3 Mean intra-operative blood loss and its relationship to operative time

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

Length of surgery

N

Mean

SD

P-value

1-3 hrs.

15

316.67

206.73

 

>3-6 hrs.

36

713.89

435.17

 

>6-10 hrs.

41

715.85

359.94

0.001*

Total

92

650.00

397.80

 
  1. *Significant using One-Way ANOVA at p < 0.05.