Table 1 Baseline characteristics of patients
Variables | Before PSM | After PSM (1:1) | ||||
|---|---|---|---|---|---|---|
Group A(n = 135) | Group B(n = 64) | P values | Group A(n = 57) | Group B(n = 57) | P values | |
Gender(male/female), n(%) | 65(48.1%)/70(51.9%) | 32(50.0%)/32(50.0%) | 0.807 | 26(45.6%)/31(54.4%) | 26(45.6%)/31(54.4%) | 1.000 |
Age (years), median (IQR) | 76(70, 81) | 79(73, 86) | 0.017 | 78(74, 83) | 78(72, 85) | 0.836 |
Diameter of the CBD stone (cm), mean ± SD | 1.918 ± 0.5249 | 1.950 ± 0.5431 | 0.690 | 1.905 ± 0.5786 | 1.923 ± 0.4910 | 0.862 |
Number of CBD stones (single/multiple), n (%) | 46(34.1%)/89(65.9%) | 19(29.7%)/45(70.3%) | 0.538 | 21(36.8%)/36(63.2%) | 19(33.3%)/38(66.7%) | 0.695 |
native papilla, n(%) | 97(71.9%) | 50(78.1%) | 0.347 | 44(77.2%) | 43(75.4%) | 0.826 |
Peri-ampullary diverticulum, n(%) | 67(49.6%) | 33(51.6%) | 0.799 | 32(56.1%) | 29(50.9%) | 0.573 |
Acute cholangitis (mild), n(%) | 28(20.7%) | 26(40.6%) | 0.007 | 20(35.1%) | 20(35.1%) | 1.000 |
Chronic concomitant diseases | ||||||
Cardiovascular, n(%) | 80(59.3%) | 39(60.9%) | 0.822 | 42(73.7%) | 37(64.9%) | 0.310 |
Respiratory, n(%) | 7(5.2%) | 2(3.1%) | 0.721 | 2(3.5%) | 2(3.5%) | 1.000 |
Cerebrovascular, n(%) | 20(14.8%) | 11(17.2%) | 0.666 | 12(21.1%) | 10(17.5%) | 0.635 |
Diabetes mellitus, n(%) | 35(25.9%) | 19(29.7%) | 0.577 | 18(31.6%) | 14(24.6%) | 0.404 |
Renal, n(%) | 8(5.9%) | 7(10.9%) | 0.252 | 6(10.5%) | 6(10.5%) | 1.000 |
ASA PS Classification (III/IV), n(%) | 128(94.8%)/7(5.2%) | 57(89.1%)/7(10.9%) | 0.149 | 51(89.5%)/6(10.5%) | 53(93.0%)/4(7.0%) | 0.508 |