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Table 1 Other possible risk factors for infection and length of stay

From: Early postoperative hyperglycaemia is not a risk factor for infectious complications and prolonged in-hospital stay in patients undergoing oesophagectomy: a retrospective analysis of a prospective trial

Preoperative parameter Value Missing values (%)
Age in years (mean ± SD) 62.4 ± 10.0 0
Male sex (n [%]) 127 (84.1) 0
ASA   0
   Class I (n [%]) 47 (31.1)  
   Class II (n [%]) 104 (68.9)  
History of cardiac valve disease or arrhythmia (n [%]) 7 (4.6) 0.7
History of hypertension (n [%]) 21 (13.9) 0.7
History of coronary artery disease (n [%]) 16 (10.6) 0.7
BMI (mean ± SD) 25.4 ± 3.3 25.8
Percentage of expected FEV1 (mean ± SD) 101 ± 18 18.5
Diabetes mellitus (n [%]) 9 (6.0) 0.7
Preoperative weight loss (kg; mean ± SD) 5.3 ± 6.6 7.9
Clinical staging of tumor   1.3
   Stage I (n [%]) 18 (11.9)  
   Stage II (n [%]) 68 (45.0)  
   Stage III (n [%]) 58 (38.4)  
   Stage IV (n [%]) 5 (3.3)  
Allocated to transthoracic procedure (n [%]) 78 (51.7%) 0
Duration of surgery (hours; mean ± SD) 5.3 (1.6) 0.7
Insulin use within 48 hours after surgery (n [%]) 9 (6.0%) 9.2
  1. A total of 151 patients were included. ASA, American Society of Anesthesiologists; BMI, body mass index; FEV1, forced expiratory volume in 1 s; SD, standard deviation.