Table 1 General group characteristics.

From: Risk factors for serious morbidity, prolonged length of stay and hospital readmission after laparoscopic appendectomy - results from Pol-LA (Polish Laparoscopic Appendectomy) multicenter large cohort study

No (%)

4618 (100%)

Males/Females, n (%)

2409/2209 (52%/48%)

Median age, years (IQR)

33 (24–47)

Median BMI, kg/m2 (IQR)

24.8 (22.03–28.5)

ASA class

1

3214 (69.6%)

2

1213 (26.27%)

3

184 (3.98%)

4

7 (0.15%)

Smoking, n (%)

794 (17.19%)

Diabetes mellitus, n (%)

147 (3.18%)

Symptoms <48 h vs. >48 h, n (%)

3152/1466 (68.25%/31.75%)

Median Alvarado score (IQR)

6 (5–8)

Median leukocytosis, *1000 per mm3 (IQR)

13.1 (10.04–16.1)

Median CRP, mg/l (IQR)

27.33 (6.2–72)

No. of laparoscopic appendectomies/year in department, n (%)

>50

1349 (29.21%)

<50

3269 (70.79%)

First operator, n (%)

Specialist

2589 (56.06%)

Resident

2029 (43.94%)

Median operative time, min (IQR)

55 (40–70)

Technique, n (%)

Clipping

2841 (61.64%)

Suturing/ligature

453 (9.79%)

Stapler

313 (6.75%)

Endoloop

606 (13.11%)

Röder loop

403 (8.71%)

Complicated appendicitis, n (%)

1269 (27.48%)

Uncomplicated appendicitis, n (%)

3349 (72.52%)

Intraoperative adverse events, n (%)

104 (2.25%)

Drainage, n (%)

3493 (75.64%)

Postoperative morbidity, n (%)

310 (6.71%)

Clavien-Dindo classification of surgical complications, n (%)

I

146 (3.16%)

II

80 (1.73%)

III

77 (1.67%)

IV

4 (0.09%)

V

3 (0.06%)

Conversions, n (%)

294 (6.37%)

Reinterventions after primary procedure, n (%)

98 (2.12%)

LOS

3 (2–4)

Readmissions, n (%)

118 (2.56%)