Figure 4

Forest plot of the improvement in nausea symptoms as measured by the change in VAS scores (ginger versus Vitamin B6): subgroup analysis regarding dose (≥1500 mg versus < 1500 mg).
Forest plot of the improvement in nausea symptoms as measured by the change in VAS scores (ginger versus Vitamin B6): subgroup analysis regarding dose (≥1500 mg versus < 1500 mg).