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Table 1 Baseline characteristics of the included studies

From: Transanal total mesorectal excision (taTME) for rectal cancer: a systematic review and meta-analysis of oncological and perioperative outcomes compared with laparoscopic total mesorectal excision

Studies (NOS score) Year Country Study design Gender Male/Female BMI Mean ± SD/median (range) Age Mean ± SD/median (range) ASA I + II/III + IV Tumor location Neoadjuvant treatment (Yes/No) taTME type
taTME laTME taTME laTME taTME laTME taTME laTME   taTME laTME  
Velthuis [31] (3) 2014 Netherland MCC 18/7 18/7 25 (20-36) 28 (21-34) NR NR NR NR low/mid 25/0 25/0 Total
Kanso [27] (6) 2015 France MCC 36/15 26/8 24 ± 4 24 ± 4 59 ± 11 59 ± 11 47/4 31/3 low 43/41a 28/27a Partial
Hevia [28] (4) 2014 Spain MCC 24/13 22/15 23.7 ± 3.6 25.1 ± 4.0 64.5 ± 11.8 69.5 ± 10.5 30/7 25/12 low/mid 28/9 23/14 Total
Chen [30] (4) 2015 Taiwan MCC 38/12 76/24 24.2 ± 3.7 24.6 ± 3.1 57.3 ± 11.9 58.3 ± 11.3 33/17 69/31 low/mid 50/0 100/0 Total
Denost [32] (6) 2014 France RCT 37/13 32/18 25 (17-33) 26 (18-38) 64 (39-82) 63 (31-90) 49/1 49/1 low 40/10 44/6 Partial
Perdawood [26] (4) 2015 Denmark MCC 19/6 19/6 28 (18-46) 26 (19-38) 70 (54-76) 70 (49-84) 19/6 22/3 low/mid 7/18 4/21 Total
Angelis [29] (4) 2015 France MCC 21/11 21/11 25.2 ± 3.5 24.5 ± 3.2 64.9 ± 10.0 67.2 ± 9.6 31/1 31/1 low/mid 27/5 23/9 Total
  1. taTME transanal total mesorectal excision, laTME laparoscopic total mesorectal excision, BMI body mass index, ASA American Society of Anesthesiologists, MCC matched case control, RCT randomized controlled trial,
  2. aIn taTME group, 43 patients received neoadjuvant radiotherapy and 41 patients received neoadjuvant chemotherapy. In laTME group, 28 patients received neoadjcpuvant radiotherapy and 27 patients received neoadjuvant chemotherapy