Comparison of Efficacy of Self-Expandable Metallic Stent Placement in the Unresectable Esophageal Cancer Patients

Table 3

Improvement in the dysphagia score (mean ± SD).

Stent	Number of times	Prescore	Postscore	Improvement score
Z	17	3.65 ± 0.49	2.35 ± 1.22	1.3
UF	53	3.21 ± 0.95	1.45 ± 1.2	1.76
NS	18	4 ± 0.57	2 ± 1.11	2
NSu	3	4	2.67 ± 0.58	1.33
Total	91	3.43 ± 0.82	1.79 ± 1.25	1.64

Z: Cook-Z stent; UF: Ultraflex stent; NS: Niti-S stent; NSu: Niti-S ultrathin stent; Improvement score = prescore minus postscore.