Table 1 Clinical data before and after PSM matching in different laparoscopic techniques
Variable | Before PSM | After PSM | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Total (n = 561) | CLS (n = 260) | SILS (n = 301) | P | SMD | Total (n = 376) | CLS (n = 188) | SILS (n = 188) | P | SMD | |
Demographic information | ||||||||||
Sex, n (%)ǂ | 0.426 | 0.553 | ||||||||
Female | 136 (24.24) | 59 (22.69) | 77 (25.58) | 0.066 | 95 (25.27) | 45 (23.94) | 50 (26.60) | 0.060 | ||
Male | 425 (75.76) | 201 (77.31) | 224 (74.42) | -0.066 | 281 (74.73) | 143 (76.06) | 138 (73.40) | -0.060 | ||
Age (year)# | 6.10 (2.47, 9.63) | 5.69 (2.24, 8.80) | 6.49 (2.73, 10.19) | 0.064 | 0.169 | 6.33 (2.72, 9.66) | 6.21 (2.89, 9.27) | 6.41 (2.59, 10.02) | 0.942 | 0.027 |
Duration of disease, n (%)ǂ | 0.019^ | 0.885 | ||||||||
< 1 day | 196 (34.94) | 107 (41.15) | 89 (29.57) | -0.254 | 143 (38.03) | 75 (39.89) | 68 (36.17) | -0.077 | ||
1 ~ < 3 days | 205 (36.54) | 92 (35.38) | 113 (37.54) | 0.045 | 134 (35.64) | 64 (34.04) | 70 (37.23) | 0.066 | ||
3 ~ < 7 days | 119 (21.21) | 46 (17.69) | 73 (24.25) | 0.153 | 74 (19.68) | 37 (19.68) | 37 (19.68) | 00 | ||
≥ 7 days | 41 (7.31) | 15 (5.77) | 26 (8.64) | 0.102 | 25 (6.65) | 12 (6.38) | 13 (6.91) | 0.021 | ||
Preoperative nutritional status, (n/%)ǂ | 0.377 | 0.929 | ||||||||
Normal | 490 (87.34) | 226 (86.92) | 264 (87.71) | 0.024 | 333 (88.56) | 166 (88.30) | 167 (88.83) | 0.017 | ||
Risk of malnutrition | 58 (10.34) | 30 (11.54) | 28 (9.30) | -0.077 | 34 (9.04) | 18 (9.57) | 16 (8.51) | -0.038 | ||
Malnutrition | 13 (2.32) | 4 (1.54) | 9 (2.99) | 0.085 | 9 (2.39) | 4 (2.13) | 5 (2.66) | 0.033 | ||
Surgery at midnight, n (%)ǂ | 0.491 | 0.803 | ||||||||
Yes | 118 (21.03) | 58 (22.31) | 60 (19.93) | -0.059 | 82 (21.81) | 42 (22.34) | 40 (21.28) | -0.026 | ||
No | 443 (78.97) | 202 (77.69) | 241 (80.07) | 0.059 | 294 (78.19) | 146 (77.66) | 148 (78.72) | 0.026 | ||
Operation technique, n (%)ǂ | 0.157 | 0.824 | ||||||||
Wedge resection | 172 (30.66) | 72 (27.69) | 100 (33.22) | 0.117 | 118 (31.38) | 58 (30.85) | 60 (31.91) | 0.023 | ||
Ileal resection with end-to-end anastomosis | 389 (69.34) | 188 (72.31) | 201 (66.78) | -0.117 | 258 (68.62) | 130 (69.15) | 128 (68.09) | -0.023 | ||
ASA Class, n (%)ǂ | 0.464 | 0.808 | ||||||||
Grade 1 | 341 (60.78) | 166 (63.85) | 175 (58.14) | -0.116 | 229 (60.9) | 116 (61.70) | 113 (60.11) | -0.033 | ||
Grade 2 | 170 (30.3) | 75 (28.85) | 95 (31.56) | 0.058 | 113 (30.05) | 53 (28.19) | 60 (31.91) | 0.080 | ||
Grade 3 | 43 (7.66) | 16 (6.15) | 27 (8.97) | 0.099 | 29 (7.71) | 16 (8.51) | 13 (6.91) | -0.063 | ||
Grade 4 | 7 (1.25) | 3 (1.15) | 4 (1.33) | 0.015 | 5 (1.33) | 3 (1.60) | 2 (1.06) | -0.052 | ||
Case type, n (%)ǂ | 0.002^^ | 0.759 | ||||||||
Elective | 200 (35.65) | 75 (28.85) | 125 (41.53) | 0.257 | 123 (32.71) | 62 (32.98) | 61 (32.45) | -0.011 | ||
Urgent | 253 (45.1) | 122 (46.92) | 131 (43.52) | -0.069 | 180 (47.87) | 87 (46.28) | 93 (49.47) | 0.064 | ||
Emergent | 108 (19.25) | 63 (24.23) | 45 (14.95) | -0.260 | 73 (19.41) | 39 (20.74) | 34 (18.09) | -0.069 | ||
Distance to the ileocecal region (cm)* | 76.35 ± 16.62 | 78.29 ± 14.75 | 74.67 ± 17.94 | 0.009^^ | -0.202 | 77.78 ± 16.23 | 77.95 ± 14.78 | 77.61 ± 17.60 | 0.837 | -0.020 |
Symptoms | ||||||||||
Vomiting, n (%)ǂ | 0.952 | 0.833 | ||||||||
Yes | 223 (39.75) | 103 (39.62) | 120 (39.87) | 05 | 150 (39.89) | 74 (39.36) | 76 (40.43) | 0.022 | ||
No | 338 (60.25) | 157 (60.38) | 181 (60.13) | -05 | 226 (60.11) | 114 (60.64) | 112 (59.57) | -0.022 | ||
Abdominal pain, n (%)ǂ | 0.704 | 0.458 | ||||||||
Yes | 347 (61.85) | 163 (62.69) | 184 (61.13) | -0.032 | 231 (61.44) | 119 (63.30) | 112 (59.57) | -0.076 | ||
No | 214 (38.15) | 97 (37.31) | 117 (38.87) | 0.032 | 145 (38.56) | 69 (36.70) | 76 (40.43) | 0.076 | ||
Bloody stool, n (%)ǂ | 0.870 | 0.074 | ||||||||
Yes | 175 (31.19) | 82 (31.54) | 93 (30.90) | -0.014 | 116 (30.85) | 66 (35.11) | 50 (26.60) | -0.193 | ||
No | 386 (68.81) | 178 (68.46) | 208 (69.10) | 0.014 | 260 (69.15) | 122 (64.89) | 138 (73.40) | 0.193 | ||
Fever, n (%)ǂ | 0.269 | 0.325 | ||||||||
Yes | 363 (64.71) | 162 (62.31) | 201 (66.78) | 0.095 | 125 (33.24) | 67 (35.64) | 58 (30.85) | -0.104 | ||
No | 198 (35.29) | 98 (37.69) | 100 (33.22) | -0.095 | 251 (66.76) | 121 (64.36) | 130 (69.15) | 0.104 | ||
Abdominal distension, n (%)ǂ | 0.704 | 0.753 | ||||||||
Yes | 227 (40.46) | 103 (39.62) | 124 (41.20) | 0.032 | 153 (40.69) | 75 (39.89) | 78 (41.49) | 0.032 | ||
No | 334 (59.54) | 157 (60.38) | 177 (58.80) | -0.032 | 223 (59.31) | 113 (60.11) | 110 (58.51) | -0.032 | ||
Laboratory parameters | 0.691 | |||||||||
WBC (×109/L)# | 14.01 (11.10, 16.51) | 13.68 (11.09, 16.12) | 14.33 (11.36, 17.09) | 0.140 | 0.076 | 13.52 (10.69, 16.27) | 13.61 (10.79, 16.19) | 13.12 (10.56, 16.30) | 0.970 | -0.040 |
Neut (×109/L)# | 9.14 (7.17, 11.49) | 8.45 (6.90, 10.97) | 9.84 (7.60, 11.87) | < 0.001^^^ | 0.267 | 8.70 (6.95, 10.98) | 8.52 (6.93, 11.14) | 9.16 (7.02, 10.62) | 0.520 | -0.002 |
LY (×109/L)# | 3.05 (2.07, 4.33) | 3.52 (2.30, 4.82) | 2.81 (1.93, 3.65) | < 0.001^^^ | -0.407 | 3.06 (2.02, 4.41) | 3.16 (2.22, 4.55) | 3.02 (1.92, 4.17) | 0.226 | -0.077 |
MC (×109/L)# | 1.01 (0.74, 1.33) | 1 (0.72, 1.22) | 1.04 (0.77, 1.44) | 0.080 | 0.133 | 0.95 (0.70, 1.22) | 0.99 (0.71, 1.22) | 0.92 (0.68, 1.26) | 0.507 | -0.031 |
HB (g/L)# | 108 (92, 125) | 107 (94, 126) | 109 (92, 125) | 0.948 | -0.016 | 106.5 (92, 124) | 106 (92.5, 122) | 109 (92, 126) | 0.443 | 0.077 |
CRP, n (%)ǂ | 0.553 | 0.591 | ||||||||
< 8 mg/L | 178 (31.73) | 88 (33.85) | 90 (29.90) | -0.086 | 131 (34.84) | 67 (35.64) | 64 (34.04) | -0.034 | ||
8 ~ < 20 mg/L | 184 (32.8) | 78 (30) | 106 (35.22) | 0.109 | 122 (32.45) | 55 (29.26) | 67 (35.64) | 0.133 | ||
20 ~ < 50 mg/L | 126 (22.46) | 61 (23.46) | 65 (21.59) | -0.045 | 78 (20.74) | 42 (22.34) | 36 (19.15) | -0.081 | ||
≥ 50 mg/L | 73 (13.01) | 33 (12.69) | 40 (13.29) | 0.018 | 45 (11.97) | 24 (12.77) | 21 (11.17) | -0.051 | ||