First author [Ref.] | Total MDR cohort | MDR-TB n | XDR-TB n | Representative sample# | ||
Subjects n | Location | Year | ||||
Gandhi 9 | 221 | Msinga sub-district of KwaZulu Natal, South Africa | 2005–2006 | 168 | 53 | No |
Migliori 10 | 137 | Italy, Germany | 2003–2006 | 126 | 11 | Yes: Italy 69%, Germany 12.6% |
Migliori 11 | 425 | Estonia, Italy, Germany, Russia | 1999–2006 | 361 | 64 | Yes: Estonia 100%, Italy 69%, Germany 12.6%, Russia (Archangelsk) 100% |
Kim 12 | 211 | Seoul University Hospital, Korea | 1996–2005 | 168 | 43 | No |
Mitnick 16 | 651 | Lima, Peru | 1999–2002 | 603 | 48 | Yes¶ |
Chan 17 | 174 | Denver, USA | 1984–1998 | 164 | 10 | No |
Keshavjee 19 | 608 | Tomsk Oblast prisons, Russia | 2000–2004 | 579 | 29 | Yes¶ |
Eker 18 | 184 | Germany | 2004–2006 | 177 | 7 | Yes: 65% |
Kwon 20 | 155 | Seoul, Korea | 1995–2004 | 128 | 27 | No |
Lai 21 | 160 | Taiwan | 2000–2006 | 150 | 10 | No |
Banerjee 22 | 424 | California, USA | 1993–2006 | 406 | 18 | Yes: 100% |
Bonilla 23 | 1989 | Peru | 1997–2007 | 1870 | 119 | Yes¶ |
Kim 24 | 1407 | South Korea | 2000–2002 | 1332 | 75 | Yes¶ |
Median | 221 | 177 | 29 |
MDR: multidrug-resistant; TB: tuberculosis; XDR: extensively drug-resistant. #: MDR coverage >65%; ¶: the sample was considered representative according to the information available in the article.