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Table 1 Results of maxillary sinus haziness and facial swelling following suction drainage in the maxilla according to the drain insertion after orthognathic surgery

From: Maxillary sinus haziness and facial swelling following suction drainage in the maxilla after orthognathic surgery

  Orthognathic surgery patients (n = 66)  
Variables J-P drain in both the mandibular and maxillary areas (n = 41) J-P drain insertion only in the mandibular area (n = 25) P
Sex (male:female) 23:18 14:11 .597
Age (mean ± SD) years 22.2 ± 3.5 23.8 ± 6.3 .274
Suction blood volume (mean ± SD) (mL) 224.8 ± 102.0 144.4 ± 67.9 < .001*
BMI (kg/m2) 22.8 ± 3.3 22.8 ± 3.3 .97
Maxillary haziness (mean ± SD) (%) 57.5 ± 24.2 65.5 ± 20.3 .043*
Facial swelling volume (mean ± SD) (mm3) 7250 ± 3483 7575 ± 3942 .728
  1. *Significant: P < 0.05
  2. Abbreviation: J-P Jackson-Pratt (J-P) suction tube, BMI body mass index
  3. Suction blood volume; blood volume using J-P drain including mandibular J-P drain during 2 postoperative days
  4. Using the unpaired Student’s t test, we compared the age, BMI, maxillary haziness, and facial swelling volume between the two groups
  5. Suction blood volume of J-P drain in both the mandibular and maxillary areas (n = 41): sum of drain volume in maxillary and the mandibular area