Fig. 6. Forest plot of the three studies comparing BCQT with alternative regimens of second-line therapy including LBT and MBT on ITT analysis (A) and PP analysis (B). There were no significant differences between BCQT and other therapies. BCQT, bismuth-containing quadruple therapy; LBT, levofloxacin-based therapy; MBT. moxifloxacin-based therapy; CI, confidence interval. The study concerning LBT is 1) H. S. Jung et al., 2012. The studies concerning MBT are as follows: 1) J. H. Cheon et al., 2006; 2) J. M. Kang et al., 2007.