Meta-Analysis
Copyright ©The Author(s) 2015.
World J Gastroenterol. May 28, 2015; 21(20): 6329-6340
Published online May 28, 2015. doi: 10.3748/wjg.v21.i20.6329
Table 5 Subgroup analysis
Risk factorSubgroupStudies, nEffect estimate (95%CI)P valueHeterogeneity
HCVUnited States52.29 (1.19-4.41)< 0.01P = 0.004, I2 = 74%
Other92.96 (2.11-4.15)< 0.01P = 0.06, I2 = 46%
Overall142.68 (1.92-3.72)< 0.01P = 0.004, I2 = 65%
HBVPublished before 201041.61 (0.94-2.78)0.08P = 0.23, I2 = 30%
Published after 201020.59 (0.35-1.00)0.05P = 0.61, I2 = 0%
Overall61.04 (0.54-2.00)0.9P = 0.04, I2 = 57%