Different percutaneous transhepatic biliary stent placements and catheter drainage in the treatment of middle and low malignant biliary obstruction

Table 1 Comparison of baseline characteristics between the two groups

Clinical features	Group A, n = 224	Group B, n = 200	t value	P value
Male sex	124	103	0.632	0.427
Age in yr	69.76 ± 12.24	68.46 ± 14.45	0.816	0.675
Diabetes	21	25	1.060	0.302
Smoking	45	34	0.665	0.415
Coronary heart disease	53	48	0.070	0.935
Hypertension	23	22	0.060	0.870
Hyperlipidemia	14	19	1.555	0.212

Group A: Subxiphoid left hepatic lobe approach group; Group B: Right intercostal, right hepatic lobe approach group.