Table 1 Demographics and pathologic characteristics of patients undergoing right colectomy before and after propensity score matching
Unmatched right colectomy dataset | 2:1 Matched right colectomy dataset | |||||||
|---|---|---|---|---|---|---|---|---|
Laparoscopic | Robotic | SMD | p§ | Laparoscopic | Robotic | SMD | p‡ | |
Sample size | 14,630 | 2352 | 4704 | 2352 | ||||
Age, years | < 0.01* | 0.22 | ||||||
18–40 | 312 (2.1) | 40 (1.7) | 0.032 | 62 (1.3) | 40 (1.7) | 0.031 | ||
41–60 | 3053 (20.9) | 588 (25.0) | 0.098 | 1130 (24.0) | 588 (25.0) | 0.023 | ||
61–80 | 8716 (59.6) | 1411 (60.0) | 0.008 | 2860 (60.8) | 1411 (60.0) | 0.017 | ||
> 80 | 2549 (17.4) | 313 (13.3) | 0.114 | 652 (13.9) | 313 (13.3) | 0.016 | ||
Sex | 0.87 | 0.62 | ||||||
Female | 7723 (52.8) | 1246 (53) | 0.004 | 2517 (53.5) | 1246 (53.0) | 0.011 | ||
Male | 6907 (47.2) | 1106 (47.0) | 0.004 | 2187 (46.5) | 1106 (47.0) | 0.011 | ||
Race/ethnicity | < 0.01* | 0.17 | ||||||
White | 9486 (64.8) | 1839 (78.2) | 0.299 | 3757 (79.9) | 1839 (78.2) | 0.041 | ||
Black or AA | 1516 (10.4) | 282 (12.0) | 0.052 | 556 (11.8) | 282 (12.0) | 0.005 | ||
Asian | 378 (2.6) | 89 (3.8) | 0.068 | 150 (3.2) | 89 (3.8) | 0.032 | ||
Other | 3250 (22.2) | 142 (6.0) | 0.477 | 241 (5.1) | 142 (6.0) | 0.040 | ||
Hispanic | 586 (4.0) | 136 (5.8) | 0.082 | 232 (4.9) | 136 (5.8) | 0.038 | ||
BMI | < 0.01* | 0.93 | ||||||
< 18 | 296 (2.0) | 27 (1.1) | 0.070 | 48 (1.0) | 27 (1.1) | 0.012 | ||
18–25 | 4023 (27.5) | 590 (25.1) | 0.055 | 1202 (25.6) | 590 (25.1) | 0.011 | ||
25–30 | 5026 (34.4) | 766 (32.6) | 0.038 | 1546 (32.9) | 766 (32.6) | 0.006 | ||
> 30 | 5285 (36.1) | 969 (41.2) | 0.104 | 1908 (40.6) | 969 (41.2) | 0.013 | ||
ASA classification | < 0.01* | 0.74 | ||||||
Class 1 | 165 (1.1) | 11 (0.5) | 0.074 | 26 (0.6) | 11 (0.5) | 0.012 | ||
Class 2 | 4818 (32.9) | 786 (33.4) | 0.010 | 1572 (33.4) | 786 (33.4) | 0.001 | ||
Class 3 | 8549 (58.4) | 1404 (59.7) | 0.026 | 2829 (60.1) | 1404 (59.7) | 0.009 | ||
Class 4 | 1098 (7.5) | 151 (6.4) | 0.043 | 277 (5.9) | 151 (6.4) | 0.022 | ||
Pathologic T stage | < 0.01* | 0.91 | ||||||
T1 | 1606 (11.0) | 271 (11.5) | 0.017 | 544 (11.6) | 271 (11.5) | 0.001 | ||
T2 | 2417 (16.5) | 434 (18.5) | 0.051 | 835 (17.8) | 434 (18.5) | 0.018 | ||
T3 | 7092 (48.5) | 1091 (46.4) | 0.042 | 2225 (47.3) | 1091 (46.4) | 0.018 | ||
T4 | 1986 (13.6) | 278 (11.8) | 0.053 | 579 (12.3) | 278 (11.8) | 0.015 | ||
Other | 1529 (10.5) | 278 (11.8) | 0.044 | 521 (11.1) | 278 (11.8) | 0.023 | ||
Mechanical bowel prep | < 0.01* | 0.96 | ||||||
Yes | 9018 (61.6) | 1747 (74.3) | 0.273 | 3497 (74.3) | 1747 (74.3) | 0.001 | ||
No | 5612 (38.4) | 605 (25.7) | 0.273 | 1207 (25.7) | 605 (25.7) | 0.001 | ||
Antibiotic bowel prep | < 0.01* | 0.53 | ||||||
Yes | 7967 (54.5) | 1596 (67.9) | 0.278 | 3163 (67.2) | 1596 (67.9) | 0.013 | ||
No | 6663 (45.5) | 756 (32.1) | 0.278 | 1541 (32.8) | 756 (32.1) | 0.013 | ||