Table 1. Characteristic of included studies.
| No | Author | Year | Country | Study type | Male% | Median age | EUS frequencies MHz | EUS method | Sample size | Confirmatory test |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Binmoeller | 1995 | Germany | prospective | 73.6 | 61 | 7.5 | radial | 38 | surgery |
| 2 | Catalano(End) | 1994 | America | retrospective | 72.0 | 69 | 7.5,12 | radial | 100 | surgery |
| 3 | Catalano(Eva) | 1999 | America | prospective | 72.4 | 66 | 7.5,12 | radial | 145 | surgery |
| 4 | Choi | 2010 | Korea | prospective | 94.5 | 62.7 | 5,12,20 | radial | 109 | surgery |
| 5 | Gheorghe | 2006 | Romania | prospective | 92.7 | 61 | N* | N* | 41 | surgery |
| 6 | Goda | 2009 | Malaysia | retrospective | 61.4 | 65 | 20 | mini-probe | 101 | EMR |
| 7 | Grimm | 1993 | America | prospective | 85.7 | 59 | 7.5 | radial | 63 | surgery |
| 8 | Hasegawa | 1996 | Japan | retrospective | 86.4 | 61.5 | 7.5,12 | radial | 25 | surgery |
| 9 | He | 2014 | China | retrospective | 65.3 | 58 | 7.5,12 | radial | 72 | surgery |
| 10 | Heintz | 1991 | Germany | retrospective | 72.5 | 63 | 7.5,12 | radial | 40 | surgery |
| 11 | Hunerbein.C | 2003 | Germany | retrospective | 59.5 | 61 | 7.5,12.5 | R/M a | 97 | surgery |
| 12 | Hunerbein.M | 1996 | Germany | prospective | 58.2 | 62 | 7.5 | radial | 19 | surgery |
| 13 | Kawano | 2003 | Japan | retrospective | N* | N* | 20 | radial | 85 | surgery |
| 14 | Kienle | 2002 | Germany | prospective | N* | N* | 7.5,12.5 | radial | 117 | surgery |
| 15 | kutup | 2007 | Germany | retrospective | 76.2 | N* | 20 | radial | 214 | surgery |
| 16 | Lee | 2014 | Korea | retrospective | 78.9 | 68.1 | N* | N* | 19 | surgery |
| 17 | Lok | 2008 | China | retrospective | 81.1 | 65.8 | 20 | mini-probe | 59 | surgery |
| 18 | Massari | 1997 | Italy | retrospective | N* | N* | 7.5,12 | radial | 40 | surgery |
| 19 | May | 2004 | Germany | prospective | 89.0 | 63.9 | 7.5 | radial | 100 | S/EMR b |
| 20 | Murata | 1988 | Japan | retrospective | N* | N* | 7.5,10 | radial | 173 | surgery |
| 21 | Murata. Y | 1996 | Japan | prospective | 88.7 | 67.4 | 15,20 | mini-probe | 53 | surgery |
| 22 | Natsugoe | 1996 | Japan | prospective | 89.2 | 62 | 7.5 | radial | 37 | surgery |
| 23 | Nesje | 2000 | Norway | prospective | 82.3 | 66 | 7.5,12 | linear/radial | 68 | surgery |
| 24 | Nishimaki | 1999 | Japan | prospective | 88.4 | 62 | 7.5,12 | radial | 224 | surgery |
| 25 | Pham | 1998 | Australia | prospective | 71.4 | 67.5 | N* | radial | 28 | surgery |
| 26 | Sandha | 2008 | Canada | retrospective | 82.8 | 68 | N* | N* | 29 | surgery |
| 27 | Shin | 2014 | Korea | retrospective | 95.0 | 63 | N* | radial | 240 | surgery |
| 28 | Shinkai | 2000 | Japan | retrospective | 87.6 | 60 | 7.5,12,20 | radial | 113 | S /EMR b |
| 29 | Takemoto | 1986 | Japan | retrospective | 87.5 | 63.4 | N* | linear array | 12 | surgery |
| 30 | Takizawa | 2009 | Japan | prospective | 85.1 | 63 | 5,7.5 | radial | 121 | surgery |
| 31 | Tekola | 2014 | America | retrospective | 89.5 | 65.8 | 7.5 | radial | 38 | surgery |
| 32 | Tio(End) | 1990 | Netherland | retrospective | 71.7 | 61 | 7.5,12 | radial | 113 | surgery |
| 33 | Tio(Endo) | 1989 | Netherland | prospective | 68.9 | 62 | 7.5,12 | radial | 74 | surgery |
| 34 | Tio(Eso) | 1989 | Netherland | prospective | 74.7 | 62 | 7.5,12 | radial | 91 | surgery |
| 35 | Toh | 1993 | Japan | retrospective | 88.5 | 61.3 | 7.5,12 | radial | 26 | surgery |
| 36 | Vazquez | 2001 | America | retrospective | 62.2 | 64 | 7.5,12 | R/M a | 37 | surgery |
| 37 | Vickers J | 1998 | England | prospective | N* | N* | 7.5,12 | radial | 50 | surgery |
| 38 | Vickers J, AD | 1998 | England | retrospective | N* | N* | N* | mini-probe | 50 | surgery |
| 39 | Wakelin | 2002 | England | prospective | N* | N* | 7.5,12.5 | radial | 36 | surgery |
| 40 | Wu | 2003 | China | retrospective | 65.1 | 62 | 12,15 | mini-probe | 86 | surgery |
| 41 | Yanai. H | 1996 | Japan | retrospective | 64.7 | 64 | N* | radial | 16 | S/EMR b |
| 42 | Yen | 2012 | China | retrospective | 96.4 | 60.5 | N* | R/M a | 28 | surgery |
| 43 | Yoshikane | 1994 | Japan | retrospective | 92.9 | 58 | 7.5,12 | radial | 28 | surgery |
| 44 | Ziegler | 1991 | Germany | prospective | 71.2 | 57.5 | N* | linear array | 52 | surgery |
N* for not metioned
aR/M for radial/ mini-probe
bS/EMR for surgery/ EMR.