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Table 1 Basic characteristics

From: Endoscopic retrograde appendicitis therapy versus laparoscopic appendectomy versus open appendectomy for acute appendicitis: a pilot study

  ERAT group (n = 33) LA group (n = 33) OA group
(n = 33)
P value
Age, mean (SD), years 44.12 ± 16.95 43.24 ± 15.41 45.45 ± 18.04 0.866
Male, n (%) 18 (54.55) 17 (51.52) 19 (57.58) 0.967
Abdominal surgery history, n (%) 8 (24.24) 8 (24.24) 7 (21.21)  > 0.999
Symptoms     
 Migrated right lower abdominal pain, n (%) 29 (87.88) 22 (66.67) 25 (75.76) 0.142
 Nausea, n (%) 22 (66.67) 23 (69.70) 17 (51.52) 0.285
 Vomiting, n (%) 5 (15.15) 4 (12.12) 9 (27.27) 0.345
 Anorexia, n (%) 33 (100) 32 (96.97) 32 (96.97)  > 0.999
 Fever, n (%) 18 (54.55) 13 (39.39) 17 (51.52) 0.532
 Temperature (℃) 37.37 ± 0.77 37.13 ± 0.57 37.22 ± 0.58 0.317
Signs     
 Right lower abdominal tenderness, n (%) 33 (100) 33 (100) 33 (100)  
 Rebound tenderness, n (%) 17 (51.52) 15 (45.45) 20 (57.58) 0.654
Laboratory examination     
 WBC count (× 109/L) 11.78 ± 3.84 11.87 ± 3.80 13.64 ± 3.87 0.091
 Neutrophil percentages, median (25th, 75th percentile) 0.84 (0.78, 0.87) 0.81 (0.76,0.85) 0.83 (0.76, 0.90) 0.233
 CRP (mg/L)     0.749
 0–20 18 (54.6) 20 (60.6) 25 (75.76)  
 21–50 7 (21.2) 7 (21.2) 6 (18.18)  
 > 50 8 (24.2) 6 (18.2) 2 (6.06)  
CT scan     
 Local Cecal Wall thickening, n (%) 4 (12.12) 0 (0) 1 (3.03) 0.123
 Periappendiceal fat inflammation, n (%) 25 (75.76) 27 (81.82) 29 (87.88) 0.496
 Intraluminal appendicolith, n (%) 12 (36.36) 16 (48.48) 11 (33.33) 0.516
Alvarado scores, median (25th, 75th percentile) 8 (7, 9) 8 (6, 9) 8 (7, 9) 0.127
VAS scores, median (25th,75th percentile) 6 (5, 7) 7 (6, 7) 6 (6, 7) 0.054
  1. ERAT, endoscopic retrograde appendicitis therapy; LA, laparoscopic appendectomy; OA, open appendectomy; SD, standard deviation; WBC, white blood cell; CRP, C-reactive protein; VAS, visual analog scale