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Table 1 Characteristics of included studies

From: Comparisons of quality of life between patients underwent peritoneal dialysis and hemodialysis: a systematic review and meta-analysis

Author (Year) Country GDP classificationa Study design n Mean age % Male HRQoL tool
SF-36 EQ5D KDQOL
Merkus (1997) [15] Netherlands high income CS 226 56.02 60.75 Y   
Wight (1998) [40] UK high income CS 437 N/A 59.27 Y   
Merkus (1999) [10] Netherlands high income Pro 139 56.83 60.54 Y   
Blake (2000) [41] Ireland high income CS 112 44.03 70.54 Y   
Diaz-Buxo (2000) [42] USA high income CS 19,275 58.66 51.61 Y   
Harris (2002) [43] UK high income Pro 174 76.91 66.09 Y   
Wasserfallen (2004) [44] USA high income CS 506 63.60 62.21   Y  
Kutner (2005) [45] USA high income CS 3302 59.01 N/A Y   Y
Lee (2005) [26] UK high income CS 382 57.09 58.59 Y Y Y
Kalender (2007) [4] Turkey upper-middle CS 141 49.83 57.50 Y   
Zhang (2007) [46] China upper-middle CS 1062 58.90 49.44 Y   
Sayin (2007) [47] Turkey upper-middle CS 136 44.66 67.75 Y   
Borowiak (2009) [48] Poland high income CS 100 59.25 48.00   Y  
Kontodimopoulos (2009) [18] Greece high income CS 874 55.39 59.84 Y   
Ibrahim (2011) [49] Malaysia upper-middle CS 274 N/A 51.50 Y   
Turkmen (2012) [50] Turkey upper-middle CS 154 53.92 55.84 Y   
Okpechi (2013) [51] South Africa upper-middle CS 82 37.80 N/A Y   Y
Czyzewski (2014) [52] Poland high income CS 117 N/A N/A Y   Y
Yang (2015) [14] Singapore high income CS 502 57.10 52.40   Y  
Kostro (2016) [2] Poland high income CS 69 46.46 36.23 Y   Y
Chang (2016) [53] Taiwan high income CS 1687 55.35 N/A   Y  
  1. Abbreviations: GDP Gross domestic product, n Number of participants, HRQoL Health-related quality of life, SF-36 Short Form-36, EQ-5D EuroQol – 5dimension, KDQOL Kidney Disease Quality of Life Instrument, N/A Not available, CS Cross sectional, Pro Prospective, Y Yes; a GDP per capita were classified by the World Bank in 2016