Table 1. Characteristics of included studies.
| Studies | Type | Country/region | Matched | Time | Male, n | Female, n |
|---|---|---|---|---|---|---|
| Gasser et al. | Single-center | Austria | No | 2000–2020 | 268 | 126 |
| Huckaby et al. | Multi-center, IRAD | Multi-national | No | 1996–2018 | 1,854 | 969 |
| Liu et al. | Single-center | China | No | 2002–2016 | 167 | 68 |
| Li et al. | Single-center | China | Yes | 2009–2014 | 451 | 302 |
| Norton et al. | Single-center | United States | No | 1996–2018 | 444 | 206 |
| Rios et al. | Single-center | Brazil | No | 2006–2016 | 63 | 24 |
| Sabashnikov et al. | Single-center | United States | Yes | 2006–2015 | 153 | 87 |
| Suzuki et al. | Single-center | Japan | No | 2004–2016 | 156 | 147 |
| Yousef et al. | Single-center | United States | No | 2007–2021 | 361 | 240 |
| Conway et al. | Multi-center, STS database | United States | No | 2000–2010 | 172 | 79 |
| Friedrich et al. | Single-center | Germany | No | 2001–2016 | 242 | 126 |
| Fukui et al. | Single-center | Japan | No | 2006–2013 | 259 | 245 |
| Chen et al. | Multi-center, Taiwan NHIRD | Taiwan | No | 2004–2013 | 2,883 | 1,286 |
| Santamaria et al. | Single-center | Italy | No | 2009–2016 | 98 | 36 |
| Hirata et al. | Single-center | Japan | No | 2009–2013 | 37 | 48 |
IRAD, International Registry of Acute Aortic Dissections; STS, Society of Thoracic Surgeons; NHIRD, National Health Insurance Research Database.