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Table 4 Reasons of studies removed from meta-analysis in subgroup analysis

From: Old men with prostate cancer have higher risk of Gleason score upgrading and pathological upstaging after initial diagnosis: a systematic review and meta-analysis

Study Non-organ confined disease Not adjusted for PV Not adjusted for no. cores Study size ≤ 300
Audenet 2017 [14] ×   ×  
Bullock 2019 [15] × × ×  
Dinh 2015 [16]   ×   
Dinizo 2018 [6]    ×  
Epstein 2012 [17] × × ×  
Ferro 2019 [18]    × ×
Jalloh 2015 [19]     
Jeon 2017 [10]     
Kim 2013 [22]     
Kwon 2016 [23]   × ×  
Leeman 2019 [11]   ×   
Lyon 2016 [21] × ×   
Magheli 2010 [24]    ×  
Martin 2017 [25]    × ×
Morlacco 2016 [5]     
Oh 2012 [27]   ×   
Zanaty 2018 [12]    × ×
  1. × studies removed, PV prostate volume