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Table 1 Comparisons between two age groups for baseline characteristics and surgical outcomes

From: Surgical Outcomes of LigaSure Hemorrhoidectomy in the Elderly Population: A retrospective cohort study

  Age group p value
Group 1 (< 65) (n = 1075) Group 2 (≥ 65) (n = 163)
Baseline characteristics
Median age (range)
46.43(16, 64) 70.36(65, 86)  < 0.01*
Sex Female 537 (50.0%) 83 (50.9%) 0.867a
Male 538 (50.0%) 80 (49.1%)
Hemorrhoids grade III 743 (69.1%) 112 (68.7%) 0.928a
IV 332 (30.9%) 51 (31.3%)
ASA grade I 409 (38.0%) 22 (13.5%)  < 0.001*a
II 655 (60.9%) 135 (82.8%)
III 11 (1.0%) 6 (3.7%)
Preoperative hemoglobin (g/dl) 13.7 (12.5, 14.8) 13.4 (12.2, 14.5) 0.030* b
Surgical outcomes    
Operation time (min) 18.0 (13.0, 25.0) 18.0 (13.0, 25.0) 0.498 b
Postoperative pain score 3.0 (2.0, 5.0) 3.0 (2.0, 5.0) 0.139 b
FKMIP 0 664 (61.7%) 109 (66.9%) 0.139 b
1 298 (27.7%) 43 (26.4%)
2 78 (7.3%) 10 (6.1%)
3 27 (2.5%) 1 (0.6%)
4 6 (0.6%) 0
5 2 (0.2%) 0
Hospital stay (day) 2.0 (2.0, 2.0) 2.0 (2.0, 2.0) 0.608b
Follow-up times 3 897 (83.4%) 135 (82.8%) 0.835b
4 147 (13.7%) 23 (14.1%)
5 29 (2.7%) 4 (2.5%)
6 2 (0.2%) 0
8 0 1 (0.6%)
Complications 87 (8.1%) 15 (9.2%) 0.646 a
Anal stenosis 2 (0.2%) 1 (0.6%) 0.033* a
Delayed bleeding 65 (6.0%) 6 (3.7%)
Fecal impaction 3 (0.3%) 1 (0.6%)
Urine retention 15 (1.4%) 7 (4.3%)
Wound infection 2 (0.2%) 0 (0.0%)
Re-admission 30 (2.8%) 4 (2.5%)  > 0.999 a
Re-operation 5 (0.5%) 1 (0.6%) 0.572 a
  1. Categorical variables were presented by count and percentage. Continuous variables were presented by median and interquartile range (IQR). aFisher’s exact test. bMann–Whitney U test. *P is significant. Postoperative pain score: the pain score on the morning of the 1st postoperative day, ketoprofen (30 mg IM per time), morphine (5 mg IV per time)
  2. American Society of Anesthesiologists (ASA); Frequency of ketoprofen or morphine injection postoperatively (FKMIP); Intramuscular (IM); Intravenous (IV)