Table 1.
First author | Year | Country | Age | Patients | Clinical stage | Duration of follow-up | ||
---|---|---|---|---|---|---|---|---|
| ||||||||
Total | Cases | Controls | ||||||
Feugier | 2005 | Belgium | 60-75 | 399 | 202 | 197 | I-IV | 60 |
Wang YH | 2006 | China | 24-78 | 48 | 26 | 22 | I-IV | 24 |
Aviles-a | 2007 | Mexico | 65-85 | 204 | 101 | 103 | IV | 60 |
Aviles-b | 2007 | Mexico | 25-65 | 196 | 98 | 98 | III-IV | 53.4 |
Jia XL | 2011 | China | 23-76 | 36 | 18 | 18 | II-IV | 26 (12-48) |
Yang SL | 2011 | China | 18-78 | 49 | 23 | 26 | I-IV | 35 (4-66) |
Jin H | 2012 | China | 19-78 | 43 | 25 | 18 | I-IV | 12-36 |
Liu J | 2012 | China | 19-82 | 116 | 52 | 64 | I-IV | 12-36 |
Xu SF | 2013 | China | 14-74 | 73 | 39 | 34 | I-IV | 28 (6-59) |
Zeng AP | 2013 | China | 29-69 | 48 | 24 | 24 | I-IV | 36 |