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. 2021 Apr 7;45(6):1622–1629. doi: 10.1007/s00268-021-06094-4

Table 3.

The frequency and percentage of missing values for selected variables from the International ERAS® Interactive Audit System (EIAS) among all patients included in the validation

Variables Missing, n (%)
in 8 centers with conversion key
(n = 1301)
Missing, n (%)
in 4 centers without conversion key
(n = 811)
Missing, n (%)
in all 12 centers
(n = 2112)
Oral bowel preparation 7 (0.54) 1 (0.12) 8 (0.38)
Preoperative oral carbohydrate treatment 13 (1.00) 14 (1.73) 27 (1.28)
Intraoperative blood loss 76 (5.84) 14 (1.73) 90 (4.26)
Total IV volume of fluids day zero 0 (0.00) 3 (0.37) 3 (0.14)
Termination of urinary drainage 113 (8.69) 135 (16.65) 248 (11.74)
Complications during primary stay 0 (0.00) 3 (0.37) 3 (0.14)
Complications after primary stay 25 (1.92) 33 (4.07) 58 (2.75)
Length of stay during primary stay (nights) 10 (0.77) 8 (0.99) 18 (0.85)
Total length of stay (nights) 10 (0.77) 7 (0.86) 17 (0.80)
Reoperations during primary stay 0 (0.00) 4 (0.49) 4 (0.19)
Reoperations after primary stay 21 (1.61) 22 (2.71) 43 (2.04)
Complete case 216 (16.60) 177 (21.82) 393 (18.61)

Complete case was defined as a patient with information available for all variables listed here. The frequency and percentage of non-complete case was reported here

ERAS Enhanced recovery after surgery