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Table 2 Estimated and actual surgical time

From: A survey of surgeons’ perception and awareness of intraoperative time utilization

  Estimated time n = 18 Actual surgical time n = 21  
  Median IQR Mean SD Range Median IQR Mean SD Range p*
Opening of the abdomen 10.0 9.5-15.0 11.8 3.6 7.0-20.0 10.0 6.5-12.0 10.8 5.5 4.0-26.0 0,485
Dissection/Resection 87.5 67.5-108.8 89.7 31.1 50.0-180.0 75.0 64.0–126.5 100.0 62.8 43.0-308.0 0,532
Hand-sewn intestinal
anastomosis
20.0 15.0-25.0 20.6 5.6 15.0-35.0 23.0 16.0-27.0 24.5 11.3 11.0-56.0 0,193
Stapled intestinal
anastomosis
10.0 7.8-15.0 12.1 6.4 3.0-30.0 15.5 10.0-15.5 15.5 7.8 10.0-21.0 0,486
Closure of the abdomen 25.0 20.0-30.0 26.2 11.1 15.0-60.0 27.0 19.0-34.5 27.5 8.5 14.0-44.0 0,693
Total time for surgical procedure 147.0 131.5-201.3 160.4 42.3 110.0-260.0 146.0 128.0-201.0 173.0 72.0 96.0-404.0 0,539
  1. Estimated time for 18 surgeons’ preoperative self-estimation of specified surgical phases compared with actual time needed to perform the same phases in 21 elective, non-advanced colon cancer resections.
  2. *independent t-test.
  3. IQR = Inter Quartile Range.
  4. SD = Standard Deviation.