Author, year, [References] | Mean age (year) | Country | Sample size | Study time range | Prevalence % |
---|---|---|---|---|---|
Muller, 2005, [9] | 65.7 | Netherlands | 6712 | 1Â year | 6.9 |
Fu, 2014, [11] | 56 | USA | 89,790 | 1 year (1 Jan 2010–1Dec 2010) | 9.4 |
Carrondo, 2020, [27] | 71 | Portugal | 7347 | 1 year (1 Jan–1 Dec 2015) | 16.2 |
He, 2018, [28] | 59.3 | China | 3264 | 3 years and 4 months (Mar 2013–Jul 2016) | 12.5 |
Nicolas, 2017, [29] | 60.2 | USA, Germany | 392,995 | 9 years (2006–2014) | 33.3 |
Sewify, 2016, [30] | 55.5 | Kuwait | 722 | 3 years (Apr 2011–Mar 2014) | 34.9 |
Wilke, 2016, [31] | 73.8 | USA, Germany | 456,586 | 2 years (2010–2012) | 9.2 |
Al-rubeaan, 2012, [32] | 51.9 | Saudi Arabia | 1000 | 18 years (1993–2009) | 25.3 |
Yu, 2014, [33] | 62.5 | USA | 73,151 | 3 years and 8 months (1 Jan 2008–9 Sep 2011) | 8.2 |
Hiriji, 2012, [34] | 63 | USA, Germany, Sweden | 135,920 | 1Â year | 2.5 |
Hammar, 2010, [35] | 57.4 | Sweden | 6016 | 3 years (2004–2007) | 2.3 |
Janifer, 2009, [36] | – | India | 1157 | 1 year | 42.8 |
Venmans, 2009, [37] | 67 | Netherlands | 6343 | 1 year (2000–2002) | 2.7 |
Goswarni, 2001, [38] | 33 | India | 155 | 6Â months | 9.03 |
Bonadi, 2000, [39] | 69.4 | Italy | 490 | 2 years (1996–1998) | 18.1 |