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Table 2 Postoperative characteristics

From: Supplementation of enteral nutritional powder decreases surgical site infection, prosthetic joint infection, and readmission after hip arthroplasty in geriatric femoral neck fracture with hypoalbuminemia

  Control Nutri. supple. Statistics
Maximum Hb drop, g/L 31.4 ± 4.1 30.3 ± 4.1 t = 2.44, P = 0.01
Amount of ALB infusion, g 61 ± 22 44 ± 18 M–W U = 6384.5, P< 0.001
Amount of wound effusion    
 Little (0,1), n/% 51/32 65/45 M–W U = 9627.5, P = 0.005
 Moderate (2,3), n/% 45/28 42/29
 Large (4,5), n/% 65/40 38/26
Complications    
 wound complication, n/% 27/16.8 11/7.6 χ2 = 5.92, P = 0.02
 SSI, n/% 21/13.0 8/5.5 χ2 = 5.04, P = 0.03
 PJI, n/% 16/9.9 4/2.8 χ2 = 6.44, P = 0.01
 Nausea, n/% 29/18.0 23/15.9 χ2 = 0.25, P = 0.62
 Vomiting, n/% 28/17.4 18/12.4 χ2 = 1.48, P = 0.22
 Diarrhea, n/% 5/3.1 6/4.1 χ2 = 0.24, P = 0.63
 Others, n/% 0 0
30-day readmission, n/% 14/8.7 3/2.1 χ2 = 6.39, P = 0.01
Reasons of readmission    
 Wound complications, n/% 2/1.2 2/1.4 χ2 = 0.15a, P = 0.69
 Dislocation, n/% 1/0.6 1/0.7 χ2 = 0.40a, P = 0.52
 Gastrointestinal diseases, n/% 8/5.0 0
 MI, n/% 1/0.6 0
 DVT, n/% 1/0.6 0
 Pneumonia, n/% 1/0.6 0
30-day reoperation, n/% 4/2.5 3/2.1 P = 1b
Total hospital length of stay, days 10.7 ± 2.0 9.2 ± 1.8 M–W U = 6520.0, P < 0.001
  1. Nutr. supple. nutritional supplementation; SSI surgical site infection; PJI periprosthetic joint infection; MI myocardial infarction; DVT deep vein thrombosis
  2. aContinuity correction
  3. bFisher’s exact test