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Table 2 ES(z) of the studies included in the meta-analysis

From: The impact of disease-related impairments on disability and health-related quality of life: a systematic review

  ES(z) impairment – disability (n = 31) ES(z) impairment – HRQL (n = 31)
References   generic (n = 23) disease-specific (n = 10) physical (n = 13) mental (n = 21)
Deyo, 1983 [22] 0.23 0.31    0.32
Birrell, 1998 [19] 0.81 0.49   0.65 0.37
Kvien, 1998 [29] 0.50 0.39 0.42   0.41
Wolfe, 2000 [45] 0.35 0.38   0.47 0.29
Angst, 2004 [16] 0.60 0.07   0.29 -0.15
Angst, 2005 [17] 0.60 0.11   0.41 -0.17
Salaffi, 2005 [39] 1.00 0.46   0.41 0.51
Rothwell, 1997 [37] 1.30 0.15    0.05
Sharrack, 1999 [42] 1.05 0.48    0.21
Schwartz, 1999 [41] 0.50 0.68    
Miller, 2000 [34] 1.02 0.18   0.18 0.18
Hobart, 2000 [26] 1.33 0.06   0.34 0.14
Rasova, 2005 [36] 0.56   0.22 0.39 0.04
Rubenstein, 1998 [38] 0.73 0.40   0.48 0.31
Schrag, 2000 [40] 0.66 0.32 0.55 0.49 0.21
Franchignoni, 2005 [23] 0.79   0.71   
de Haan, 1993 [21] 0.87 0.52    0.37
Gottlieb, 2001 [25] 0.55 0.16    
Fuhrer, 1992 [24] 0.85 0.04    
May, 2002 [33] 1.26   0.06   
Marx, 2001 [32] 1.19 0.35   0.83 0.01
Paxton, 2003 [35] 0.35   0.49   
MacDermid, 2001 [31] 0.85 0.41   0.54 0.29
Beaton, 1996 [18] 0.40 0.28    
Lindeboom, 1998 [30] 0.23 0.21    
Vinik, 2005 [44] 0.66   0.59   
Kahn, 2001 [28] 0.87   0.78   0.78
Cleary, 1993 [20] 0.60 0.38    0.38
Speyer, 2004 [43] 1.05   0.55   0.44
Hu, 2005 [27] 0.46 0.45   0.29 0.60
Zachariae, 2002 [46] 0.44   0.40