Table 1.
Overall survival time after stent implantation
| Study | Reference | Type of study | Number of patients | USEMS | CSEMS | P-value |
|---|---|---|---|---|---|---|
| Omata et al. (2004) | [8] | RCT | 112 | 255 (12–810) days (n = 55) | 237 (11–1,155) days (n = 57) | ns |
| Lee et al. (2014) | [9] | RCT | 40 | 359 (95% CI, 239–480) days (n = 20) | 350 (95% CI, 264–436) days (n = 20) | 0.271 |
| Jang et al. (2018) | [26] | Retrospective study | 645 | 161 (65.0–328.0) days (n = 431) | 164 (54.0–315.0) days (n = 214) | 0.76 |
| Sakai et al. (2021) | [11] | RCT | 92 | 223 (95% CI, 101–338) days (n = 48) | 213 (95% CI, 111–323) days (n = 44) | 0.238 |
| Lee et al. (2013) | [12] | Retrospective study | 749 | 11.8 (95% CI, 10.5–13.2) months (n = 578) | 10.4 (95% CI, 8.7–12.1) months (n = 171) | 0.84 |
| Kullman et al. (2010) | [13] | RCT | 400 | 174 days (n = 200) | 116 days (n = 200) | 0.32 |
| Yoon et al. (2006) | [14] | Retrospective study | 77 | 308 ± 42 days (n = 41) | 392 ± 60 days (n = 36) | 0.952 |
| Kawakubo et al. (2011) | [15] | Retrospective study | 65 | 190 (11–439) days (n = 21) | 291 (6–724) days (n = 44) | ns |
| Kitano et al. (2013) | [16] | RCT | 120 | 222 days (n = 60) | 285 days (n = 60) | 0.68 |
| Conio et al. (2018) | [17] | RCT | 158 | 112 (95% CI, 65.9–158.1) days (n = 80) | 134 (95% CI, 97.8–170.2) days (n = 78) | 0.23 |
| Saleem et al. (2011) | [19] | META | 203 | WMD (CSEMS vs USEMS) = 51.18 days | 0.01 | |
| Moole et al.(2016) | [21] | META | 2,239 | OR (CSEMS vs USEMS) = 1.29 | ns | |
USEMS, uncovered self-expanding metal stent; CSEMS, covered self-expanding metal stent; RCT, randomized–controlled trial; META, meta-analysis; 95% CI, 95% confidence interval; WMD, weighted mean difference; OR, odds ratio; ns, not significant.