Table 1. Characteristics of 20 studies investigating ISR in the meta-analysis.
| Study | Year | Design | Stent | Age | Male | Total Patients | DM patients | FU | OR(95%CI) |
| Amano T(S1) | 2006 | Prospective | BMS | 65 | 124(79.5) | 156 | 59 | 6 m | 2.93(1.11–7.73) |
| Ari H(S2) | 2010 | Prospective | B/D | 60.3 | 80(76.2) | 105 | 12 | 6 m | 1.84(0.64–5.27) |
| Chen YL(S3) | 2009 | Retrospective | BMS | 61 | 499(81.9) | 609 | 197 | 6 m | 1.831(1.274–2.633) |
| Ferrero V(S4) | 2003 | Retrospective | BMS | 66 | 710(82.7) | 858 | 162 | 6 m | 1.5(1.2–1.8) |
| 1.6(1.2–2) | |||||||||
| Hong SN(S5) | 2006 | Retrospective | BMS | 56 | 87(72.5) | 120 | 28 | 6 m | 1.771(0.939–9.34) |
| Hong YJ(S6) | 2007 | Prospective | B/D | 61 | 181(72.7) | 249 | 70 | 6 m | 2.494(0.714–7.342) |
| Ijsselmuiden AJJ(S7) | 2003 | RCT | BMS | 61 | 324(81.0) | 400 | 32 | 6 m | 2.35(1.2–4.6) |
| Ino Y(S8) | 2011 | Retrospective | SES | 68 | 317(63.9) | 496 | 183 | 6–9 m | 2.342(1.117–4.908) |
| Jørgensen E(S9) | 2001 | RCT | BMS | 60 | 293(79.4) | 369 | 29 | 6 m | 3(1–8.7) |
| Kamitani T(S10) | 2005 | Prospective | BMS | 61.8 | 97(89.0) | 109 | 51 | 6 m | 0.96(0.324–2.82) |
| Kim JS(S11) | 2009 | Retrospective | SES | 56 | 394(70.7) | 557 | 142 | 9 m | 1.81(0.77–4.29) |
| Kuwano T(S12) | 2011 | Retrospective | B/D | 67 | 859(79.8) | 1076 | 540 | 8 m | 1.32(0.87–2.01) |
| Liistro F(S13) | 2006 | Prospective | SES | 66 | 188(77.0) | 244 | 61 | 9 m | 3.21(1.01–6.4) |
| Niroomand F(S14) | 2004 | Retrospective | BMS | 63.5 | 225(100.0) | 225 | 48 | 6 m | 2.08(1.12–3.84) |
| Ribichini F(S15) | 2003 | Retrospective | BMS | 62.5 | 737(82.2) | 897 | 125 | 6 m | 2.34(1.61–3.41) |
| Rathore S(S16) | 2009 | Retrospective | SES-PES | 68.2 | 1413(75.0) | 1885 | 697 | 9 m | 1.45(1.07–1.97) |
| Rittersma SZH(S17) | 2004 | Prospective | BMS | 58 | 278(80.6) | 345 | 32 | 6–10 m | 0.87(0.34–2.25) |
| Sahara M(S18) | 2004 | Retrospective | BMS | 66.3 | 80(86.9) | 92 | 18 | 6 m | 2.494(0.716–8.344) |
| Xu YL(S19) | 2011 | Prospective | SES-PES | 57 | 237(78.2) | 303 | 86 | 8 m | 2.046(0.933–4.485) |
| Zairis MN(S20) | 2002 | Prospective | BMS | 59.3 | 396(82.0) | 483 | 95 | 6 m | 2.12(1.3–3.45) |