Figure 6. Subgroup meta-analysis comparing Artemether vs. placebo for chemoprophylaxis against schistosomiasis.

The mid-points of the lines represent the relative risk and the end-points of the lines show the corresponding 95% C.I. Intermediate diamond symbols are combined relative risks for each subgroup and the diamond at the bottom is the overall combined relative risk. The vertical line emphasizes an relative risk = 1 (no difference) and the dashed vertical line shows the value of the overall relative risk. Relative risk <1 indicates a protective effect of artemether. The original reports are labeled as follows: author name, year, and location, number of dosis and interval of administration, for details see table 5.