Table 1.
Characteristics of studies included in this meta-analysis
| Study | Country | Ethnicity | CAD |
Control |
||||
| Gender (male/female) | Age* (year) | (TT+TC)/CC | Gender (male/female) | Age* (year) | (TT+TC)/CC | |||
| Pollanen et al., 2001 | Finland | Western | NA | NA | 31/78 | NA | NA | 43/124 |
| Wang J. et al., 2001 | Australia | Western | NA | NA | 140/479 | NA | NA | 41/128 |
| Morgan et al., 2003 | UK | Western | NA | NA | 219/779 | NA | NA | 42/223 |
| Haberbosch and Gardemann, 2005 | Germany | Western | NA | NA | 502/1596 | NA | 55.3±10.2 | 121/414 |
| Nuzzo et al., 2006 | Italy | Western | 109/6 | NA | 42/73 | 100/53 | NA | 37/86 |
| Horne et al., 2007 | USA | Western | 2748/912 | NA | 968/3692 | 550/572 | 58.0±13.0 | 292/830 |
| Nanni et al., 2007 | Italy | Western | NA | 47.8±6.2 | 64/136 | NA | 47.0±5.5 | 66/135 |
| Opstad et al., 2012 | Norway | Western | 783/218 | 62 (36–81) | 240/756 | 147/57 | 55 | 50/154 |
| Kim et al., 2002 | Korea | East Asian | 89/42 | 61.3±7.9 | 32/99 | 59/58 | 59.3±8.5 | 32/85 |
| Cho et al., 2002 | Korea | East Asian | 37/26 | NA | 15/48 | 36/31 | 56.0±10.0 | 4/63 |
| Koh et al., 2008 | Korea | East Asian | 125/81 | 611±11.8 | 55/151 | 113/60 | 58.3±11.8 | 31/142 |
| Zhi et al., 2010 | China | East Asian | 543/219 | 67.5±9.6 | 177/585 | 372/183 | 69.9±11.8 | 113/442 |
| Wang L. et al., 2012 | China | East Asian | 255/129 | 55.6±10.9 | 98/286 | 291/160 | 54.1±10.3 | 78/373 |
| Alp et al., 2009 | Turkey | West Asian | 88/58 | 59.3±9.1 | 47/99 | 59/63 | 57.3±9.7 | 32/90 |
| Ghaderian et al., 2010 | Iran | West Asian | 324/74 | NA | 104/296 | 111/89 | NA | 59/141 |
| Fallah et al., 2010 | Iran | West Asian | 75/70 | 58.4±9.1 | 134/11 | 80/77 | 55.4±9.4 | 138/19 |
*
Data are expressed as mean±standard deviation or mean (range)
NA: not applicable