Table 1.
Year | Author | Country | Patient number | Employment rate | Mean age (yr) | Follow-up (mo) | Ref. |
2014 | Weng | Taiwan | 106 | 45% | 54 | 43 | [16] |
2012 | Huda | United States | 21942 | 24% | - | < 24 | [13] |
2011 | Gorevski | United States | 91 | 38% | 56 | - | [29] |
2010 | Duffy | United States | 77 | 35% | - | > 240 | [53] |
2010 | De Baere | Belgium | 63 | 38% | 58 | - | [14] |
2009 | Åberg | Finland | 353 | 44% | 55 | 96 | [6] |
2007 | Saab | United States | 308 | 27% | 51 | 52 | [17] |
2006 | Sargent | United Kingdom | 60 | 37% | 35 | 36 | [54] |
2006 | Sahota | United States | 105 | 49% | 54 | 34 | [18] |
2006 | Kirchner | Germany | 23 | 26% | 48 | 62 | [55] |
2005 | Rongey | United States | 186 | 55% | 55 | 41 | [15] |
2004 | Blanch | Spain | 126 | 33% | 56 | 12 | [56] |
2004 | Cowling | United States | 152 | 36% | 53 | 53 | [20] |
2003 | Karam | France | 125 | 53% | 51 | 120 | [57] |
2001 | Moyzes | Germany | 103 | 22% | 47 | 77 | [58] |