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Table 6 Correlation of intra-operative blood loss to operative time, age and pre-operative hemoglobin level

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

Pearson correlation
Operative time r 0.332
p-value 0.001*
N 92
Age r 0.235
p-value 0.024*
N 92
Pre-operative hemoglobin r 0.280
p-value 0.007*
N 92
  1. *Significant using Pearson's Correlation Coefficient at p < 0.05.