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. 2017 Dec 21;23(47):8415–8425. doi: 10.3748/wjg.v23.i47.8415

Table 2.

Basic characteristics of the studies included in the meta-analysis

Ref. Country Study type Years of study Group Sample size Age Mortality Transfusion Rebleeding Length of hospitalization
Boyle et al[17], 1983 United States Retrospective 1977-1981 Control 40 54 ± 21 -
CKD (mix) 20 59 ± 41
Cheung et al[10], 2010 Canada Retrospective 2000-2006 Control 50 67 ± 13
CKD 50 71 ± 13
ESRD 50 68 ± 12
Hung et al[25], 2014 Taiwan Retrospective 2007 Control 6322 54.6 ± 13.3 - - -
ESRD 110 NR
Sood et al[9], 2012 United States Retrospective 2007 Control 347245 NR - - -
CKD 35985 NR
ESRD 14983 NR
Tsai et al[16], 1996 Taiwan Prospective 1991-1994 Control 640 55.7 ± 16.22 -
ESRD 58 64.1 ± 11.42
Zuckerman et al[26], 1985 United States Retrospective 1980-1983 Control 423 63 (16-96)3 - - -
CKD (mix) 59 57 (24-84)3
1

Data expressed as mean ± SEM (standard error of mean);

2

Data expressed as mean ± SD (standard deviation);

3

Data expressed as median (interquartile range). NR: Not reported; CKD: Chronic kidney disease; ESRD: End-stage renal disease.