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. 2023 Oct 6;24:791. doi: 10.1186/s12891-023-06911-y

Table 2.

Comparison of study variables between the two target outcomes of interest (OOI) groups. BMI: Body-Mass-Index; ASA: American Society of Anesthesiologists risk classification score; CRP: C-reactive protein; LOS: length of hospital stay

OOI
Normal Worse
Mean ± std Count (%) Mean ± std Count (%) p-value
Age 58 (17) 69 (11) 0.004
Sex m 80 (52.6) 11 (55.0) 0.040
w 72 (47.4) 9 (45.0)
BMI 28 (6) 29 (6) 0.515
Nicotine no 108 (71.1) 15 (75.0) 0.713
yes 44 (28.9) 5 (25.0)
Alcohol no 99 (65.1) 11 (55.0) 0.787
yes 53 (34.9) 9 (45.0)
Insurance type private 35 (23.0) 8 (40.0) 0.099
non-private 117 (77.0) 12 (60.0)
ASAS core 1 50 (32.9) 5 (25.0) 0.504
2 90 (59.2) 12 (60.0)
3 12 (7.9) 3 (15.0)
Preoperative CRP 7 (23) 32 (69) 0.015
Surgical technique microsurgical 97 (63.8) 15 (75.0) 0.973
full-endoscopic 55 (36.2) 5 (25.0)
LOS 12 (8) 22 (9) < 0.001
Operation time 56 (36) 95 (44) < 0.001
Complications no 121 (79.6) 0 (0.0) < 0.001
yes 31 (20.4) 20 (100.0)
Years of Experience with case surgery type 7 (4) 6 (5) 0.192
Number of surgeries with case surgery type at time of surgery 317 (469) 428 (599) 0.922