Table 1 Characteristics of the studies included in the meta-analysis
Author/year | Study type | Country | Cohort size | Follow-up duration | Recruitment time | Selection | Comparability | Outcome | NOS score |
|---|---|---|---|---|---|---|---|---|---|
Albizreh [25] 2021 | Retrospective | Qatar | 1144 | Until hospital discharge | 1991–2013 | ★★ | ★★ | ★★ | 6 |
Pollock [26] 2014 | Prospective | United States | 181 | Until hospital discharge | May 2007 and January 2012 | ★★★ | ★★ | ★★★ | 8 |
Arrich [27] 2006 | Retrospective | Austria | 774 | Until hospital discharge | September 1991 and December 2004 | ★★★ | ★★ | ★★ | 7 |
Leick [28] 2013 | Retrospective | German | 28 | 30 days | January 2010 and December 2011 | ★★ | ★★ | ★★ | 6 |
Whittaker [29] 2016 | Retrospective | United States | 350 | Until hospital discharge | 2008–2013 | ★★ | ★★ | ★★ | 6 |