Retrospective Cohort Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Dec 7, 2015; 21(45): 12843-12850
Published online Dec 7, 2015. doi: 10.3748/wjg.v21.i45.12843
Table 1 Preoperative characteristics of elderly patients undergoing partial colectomy before propensity score matching n (%)
CharacteristicsLaparoscopic colectomy(n = 12009)Open colectomy (n = 15595)P value
Age, mean ± SD75.94 ± 7.1574.87 ± 6.92< 0.001
BMI, mean ± SD27.30 ± 6.3827.17 ± 7.09< 0.001
Gender0.416
Female7401 (61.6)9536 (61.1)
Male4608 (38.4)6059 (38.9)
Procedure< 0.001
Right partial colectomy3122 (25.9)3773 (24.2)
Left partial colectomy6614 (55.1)8492 (54.5)
Sigmoidectomy2273 (19.0)3330 (21.3)
Indication< 0.001
Benign4769 (39.7)5447 (34.9)
Malignant4544 (37.8)7454 (47.8)
Unknown2696 (22.4)2694 (17.3)
ASA class
I155 (1.2)115 (0.7)
II5418 (45.2)4960 (31.8)
III5956 (49.6)9225 (59.2)
IV477 (4.0)1278 (8.2)
V3 (0.02)17 (0.1)
ASA III, IV or V6436 (53.6)10520 (67.5)< 0.001
Alcohol359 (2.9)408 (2.6)0.061
Current smoker  1062 (8.8)1689 (10.8)< 0.001
Cardiac diseases8489 (70.7)11350 (72.8)< 0.001
Hypertension8232 (68.5)10936 (70.1)0.005
History of CHF119 (1.0)297 (1.9)< 0.001
History of MI56 (0.5)169 (1.1)< 0.001
History of angina80 (0.7)200 (1.3)< 0.001
History of PCI957 (8.0)1431 (9.2)< 0.001
History of PCS959 (8.0)1495 (9.6)< 0.001
Pulmonary diseases836 (7.0)1519 (9.7)< 0.001
Dyspnea1600 (13.3)2723 (17.4)< 0.001
History of COPD821 (6.8)1428 (9.2)< 0.001
Ventilator dependent4 (0.02)58 (0.4)< 0.001
Pneumonia20 (0.2)71 (0.5)< 0.001
Neurological disease994 (8.3)1689 (10.8)< 0.001
History of CVA347 (2.9)613 (3.9)< 0.001
History of CVANO355 (3.0)591 (3.8)< 0.001
History of TIA516 (4.3)801 (5.1)0.002
History of tumor CNS11 (0.1)18 (0.1)0.545
Renal diseases62 (0.5)173 (1.1)< 0.001
History of renal failure15 (0.1)56 (0.4)< 0.001
Dialysis dependent52 (0.4)137 (0.9)< 0.001
Bleeding disorders487 (4.1)1009 (6.5)< 0.001
Steroid use1365 (3.0)580 (3.7)0.002
Diabetes3166 (26.4)3193 (20.5)< 0.001