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Table 1 Groups’ characteristics

From: A quest for sphincter-saving surgery in ultralow rectal tumours—a single-centre cohort study

  APR Intersphincteric TaTME p value
Males/females, n (%) 8/5 (52%/48%) 12/2 (86%/14%) 19/6 (76%/24%) 0.345
Median age, years (IQR) 60 (55–71) 63 (50–69) 65 (59.5–72.5) 0.462
Median BMI, kg/m2 (IQR) 24.91 (22.31–27.40) 24.82 (24.15–28.73) 24.80 (21.94–26.47) 0.715
ASA class
 3 3 (23.08%) 6 (42.86%) 4 (16%) 0.175
 2 10 (76.92%) 8 (57.14%) 21 (84%)
T
 3 7 (53.85%) 6 (42.86%) 15 (60%) 0.311
 2 4 (30.77%) 4 (28.57%) 1 (4%)
 1 1 (7.69%) 1 (7.14%) 2 (8%)
 0 1 (7.69%) 3 (21.43%) 7 (28%)
N
 2 0 1 (7.14%) 5 (20%) 0.381
 1 2 (15.38%) 3 (21.43%) 5 (20%
 0 11 (84.62%) 10 (71.43%) 15 (60%)
M
 1 0 0 3 (12%) 0.179
 0 13 (100%) 14 (100%) 22 (88%)
AJCC
 4 0 0 4 (16%) 0.414
 3 4 (30.77%) 6 (42.86%) 6 (24%)
 2 7 (53.85%) 5 (35.71%) 7 (28%)
 1 1 (7.69%) 1 (7.14%) 4 (16%)
 0 1 (7.69%) 2 (14.29%) 4 (16%)
Neoadjuvant treatment, n (%) 11 (84.62%) 13 (92.86%) 24 (96%) 0.456
Adjuvant treatment, n (%) 6 (46%) 7 (50%) 13(52%) 0.943
Tumour regression grade (TRG)
 3 1 (7.69%) 2 (14.29%) 3 (12%) 0.949
 2 7 (53.85%) 7 (50%) 14 (56%)
 1 4 (30.77%) 3 (21.43%) 4 (16%)
 0 1 (7.69%) 2 (14.29%) 4 (16%)
  1. AJCC American Joint Committee on Cancer staging system, ASA American Society of Anesthesiologists class, BMI Body Mass Index, IQR interquartile range, T,N,M TNM classification