Table 1.
Patient characteristics before and after matching by propensity score
| Total cohort | Matched cohort | |||||
|---|---|---|---|---|---|---|
| LAP (n = 85) | OP (n = 195) | P | LAP (n = 71) | OP (n = 71) | P | |
| Age (years) | ||||||
| Median (IQR) | 82.0 (80–84) | 82.0 (81–85) | 0.055 | 82.0 (81–84) | 82.0 (81–84) | 0.711 |
| Sex | 0.552 | 1.000 | ||||
| Male | 46 (54.1) | 98 (50.3) | 40 (56.3) | 40 (56.3) | ||
| Female | 39 (45.9) | 97 (49.7) | 31 (43.7) | 31 (43.7) | ||
| BMI (kg/m2) | ||||||
| Median (IQR) | 22.2 (20.6–24.1) | 21.6 (19.5–23.6) | 0.093 | 21.9 (20.4–24.2) | 22.0 (20.6–24.5) | 0.901 |
| ASA score | 0.882 | 0.396 | ||||
| 1 | 13 (15.3) | 35 (17.9) | 12 (16.9) | 16 (22.5) | ||
| 2 | 56 (65.9) | 120 (61.5) | 45 (63.4) | 37 (52.1) | ||
| 3 | 16 (18.8) | 38 (19.5) | 14 (19.7) | 18 (25.4) | ||
| 4 | 0 (0.0) | 2 (1.0) | ||||
| Comorbidity | 55 (64.7) | 108 (55.4) | 0.146 | 44 (62.0) | 40 (56.3) | 0.495 |
| Hypertension | 49 (57.6) | 90 (46.2) | 40 (56.3) | 34 (47.9) | ||
| Diabetes mellitus | 10 (11.8) | 26 (13.3) | 10 (14.1) | 10 (14.1) | ||
| Cardiovascular disease | 8 (9.4) | 10 (5.1) | 4 (5.6) | 3 (4.2) | ||
| Cerebrovascular disease | 4 (4.7) | 7 (3.6) | 2 (2.8) | 5 (7.0) | ||
| Pulmonary disease | 3 (3.5) | 4 (2.1) | 2 (2.8) | 0 (0.0) | ||
| TNM Stage | 0.002 | 0.978 | ||||
| I | 26 (30.6) | 25 (12.8) | 19 (26.8) | 18 (25.4) | ||
| II | 28 (32.9) | 77 (39.5) | 24 (33.8) | 24 (33.8) | ||
| III | 31 (36.5) | 93 (47.7) | 28 (39.4) | 29 (40.8) | ||
| Tumor location | 0.007 | 0.913 | ||||
| Right colon | 19 (22.4) | 61 (31.3) | 17 (23.9) | 15 (21.1) | ||
| Left colon | 44 (51.8) | 62 (31.8) | 34 (47.9) | 36 (50.7) | ||
| Rectum | 22 (25.9) | 72 (36.9) | 20 (28.2) | 20 (28.2) | ||
| Preoperative CEA (ng/mL) | 0.179 | 0.579 | ||||
| ≤5 | 59 (75.6) | 117 (67.2) | 52 (73.2) | 49 (69.0) | ||
| >5 | 19 (24.4) | 57 (32.8) | 19 (26.8) | 22 (31.0) | ||
Data are presented as n (%) unless otherwise indicated.
LAP, laparoscopic surgery; OP, open surgery; IQR, interquartile range; BMI, body mass index; ASA, American Society of Anesthesiologists; TNM, tumor node metastasis; CEA, carcinoembryonic antigen.