Meta-Analysis
Copyright ©The Author(s) 2015.
World J Gastroenterol. May 28, 2015; 21(20): 6341-6351
Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6341
Table 2 Subgroup analyses of recurrent bleeding rate
Number of studiesNumber of subjectsOR (95%CI)Heterogeneity withinsubgroupsDifference betweensubgroups
End-point time
Overall1020760.33 (0.24-0.45)No (P = 0.20, I2 = 23%)No (P = 0.42, I2 = 0%)
24 h11640.08 (0.00-1.46)NA
3 d22490.23 (0.07-0.76)Yes (P = 0.13, I2 = 56%)
7 d23130.32 (0.13-0.79)No (P = 0.37, I2 = 0%)
14 d34640.26 (0.16-0.43)Yes (P = 0.07, I2 = 58%)
28-30 d22310.45 (0.15-1.36)NA
6 wk or more55880.53 (0.30-0.94)No (P = 0.42, I2 = 0%)
Nation
Overall1012830.36 (0.25-0.51)No (P = 0.13, I2 = 35%)No (P = 0.42, I2 = 0%)
Japan44860.63 (0.33-1.17)No (P = 0.51, I2 = 0%)
China34020.25 (0.14-0.42)Yes (P = 0.06, I2 = 59%)
South Korea22460.25 (0.07-0.95)NA
United States11490.45 (0.15-1.36)NA
Intervention drug PPI
Overall810300.32 (0.21-0.48)No (P = 0.13, I2 = 37%)No (P = 0.93, I2 = 0%)
Omeprazole56150.32 (0.20-0.52)Yes (P = 0.03, I2 = 61%)
Pantoprazole34150.31 (0.15-0.65)No (P = 0.69, I2 = 0%)
Intervention drug H2RA
Overall89960.33 (0.22-0.48)No (P = 0.14, I2 = 36%)No (P = 0.18, I2 = 41.6%)
Cimetidine34300.27 (0.16-0.44)Yes (P = 0.07, I2 = 58%)
Famotidine33150.85 (0.28-2.61)No (P = 0.56, I2 = 0%)
Ranitidine22510.34 (0.14-0.85)No (P = 0.45, I2 = 0%)