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Table 1 Characteristics of 16 included studies

From: RETRACTED ARTICLE: Meta-analysis of the effect of percutaneous coronary intervention on chronic total coronary occlusions

Study Year of publication No. of patients No. of patients with successful recanalization Country Occlusion time (month) Clinical follow- up (year)
Finci[23] 1990 200 100 Switzerland 3 2
Warren[18] 1990 44 26 Australia 1 2.6
Ivanhoe[19] 1992 480 317 America 3 4
Noguchi[20] 2000 226 134 Japan 3 4.3
Suero[21] 2001 2005 1491 America 1 10
Olivari[22] 2003 376 289 Italy 1 1
Hoye[8] 2005 871 567 Netherland 1 4.5
Drozd[24] 2006 459 298 Poland 1 2.5
Prasad[25] 2007 1262 914 America 3 10
Aziz[26] 2007 543 377 U.K. 3 1.7
Valenti[27] 2008 486 344 Italy 3 1
de Labriolle[28] 2008 172 127 America 3 2
Zhuyanbin[29] 2008 115 81 China 3 3
Chenshaoliang[30] 2009 152 132 China 3 1/3
Yixianhua[31] 2008 1604 157 China 3 3
Liubingwei[32] 2008 41 22 China 3 2