Table 1.
Main characteristics of all studies included in the meta-analysis
| Study | Country | No. patients (M/F) | Age (years) | HER2-positive rate (%) | Follow-up period | Quality score |
|---|---|---|---|---|---|---|
| Dancer 2007 [15] | USA | 38 (3/25) | Median 62 (34–82) | 10.7 | NA | B |
| Stoecklein 2004 [9] | Germany | 50 (28/22) | NA | 24 | Median 13 months (3–99) | A |
| Luo 2013 [18] | China | 114 (17/97) | NA | 14.9 | NA | B |
| Sharif 2008 [16] | USA | 63 (NA) | Mean 67 (28–85) | 23.8 | NA | A |
| Saxby 2005 [10] | Australia | 30 (17/13) | Median 68 (39–82) | 3.3 | Median 1.7 years | B |
| Chou 2013 [17] | Australia | 469 (241/228) | Median 68 (28–88) | 2.1 | NA | A |
M/F male/female, NA unknown