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Table 2 Primary outcome data

From: Clopidogrel and hip fractures, is it safe? A systematic review and meta-analysis

  CG transfusion exposures/total pt NCG transfusion exposures/total pt P-value CG mean total units transfused per patienta NCG mean total units transfused per patienta P-value CG postop Hb
(g/dL)a
NCG postop Hb
(g/dL)a
P-value CG drop in Hb
(g/dL)a
NCG drop in Hb
(g/dL)a
P-value
Harty et al 2007 [68]        9.8 9.6 0.68    
Johansen et al 2008 [56]     1.0 0.2 -     3.7 2.4 0.01
Sim and Gonski 2009 [57]
CG vs NG
4/21 37/114 0.30     10.7 (1.7) 10.3 (1.6) 0.44    
Sim and Gonski 2009 [57]
CG <5 vs CG >5
2/16 2/5 >0.05     10.3 10.9 >0.05    
Cox et al 2009 [58]     0.9 0.2      3.1 1.8 <0.05
Nydick et al 2010 [53] 16/23 12/27 0.13        1.50 1.77 0.54
Chechik et al 2011 [52]     1.38 (0.98) 1.09 (1.38) >0.05       
Wallace et al 2012 [63] 29/52 18/58 0.01     9 (1.9) 9.5 (1.7) 0.41    
Collinge et al 2012 [62] 22/40 342/619 0.89 1.4 (1.7) 1.5 (2.3) 0.50 10.1 (1.2) 10.2 (1.2) 0.52    
Chechik et al 2012 [59] 6/30 9/30 0.38 0.37 0.47 0.64     2.6 1.8 0.19
Hossain et al 2013 [61] 4/50 2/52 0.37 2.0 (0) 2.5 (0.7) 0.16 10.8 (1.5) 11.1 (1.5) 0.37    
Feely et al 2013 [54] 9/40 14/80 0.51 2.1 (2.1) 2.1 (3.5) 0.49 9.1 (1.2) 9.0 (1.1) 0.64 3.0 (1.7) 3.5 (1.6) 0.08
Al Khudairy et al 2013 [60] 6/24 8/23 >0.05 0.8 (1.6) 0.7 (1.1) >0.05     1.5 1.1 >0.05
Wordsworth et al 2013 [55] 9/30 309/1195 0.67 0.67 0.55 0.54       
Manaqibwala et al 2014 [64]     0.9 (1.1) 0.6 (1.4) 0.23 10.3 (2.2) 11.4 (1.5) 0.07 0.8 (1.0) 0.6 (1.3) 0.32
  1. aValues are mean (Standard Deviation)