Outcome | Number of studies | RR | 95% CI | Heterogeneity | |
---|---|---|---|---|---|
Chi2 | I2(%) | ||||
Ginger versus placebo | |||||
#Allergic reaction [30] | 1 | 3.00 | 0.12 to 72.20 | ||
#Dehydration [30] | 1 | 3.00 | 0.12 to 72.20 | ||
2 | 3.14 | 0.65 to 15.11 | 0.00 | 0 | |
Abdominal discomfort [29] | 1 | 3.27 | 0.14 to 77.57 | ||
Diarrhea [29] | 1 | 3.27 | 0.14 to 77.57 | ||
Drowsiness [29] | 1 | 2.82 | 0.12 to 66.62 | ||
Headache [29] | 1 | 1.31 | 0.44 to 3.89 | ||
3 | 5.03 | 0.89 to 28.61 | 0.35 | 0 | |
Worsening of symptoms requiring pharmaceutical treatment [30] | 1 | 0.33 | 0.01 to 8.02 | ||
Ginger versus vitamin B 6 | |||||
#Arrhythmia [20] | 1 | 0.51 | 0.05 to 5.46 | ||
2 | 0.49 | 0.17 to 1.42 | 1.67 | 40 | |
Belching [27] | 1 | 27.18 | 1.63 to 453.06* | ||
Burning sensation after capsule ingestion [27] | 1 | 1.01 | 0.21 to 4.91 | ||
2 | 0.75 | 0.48 to 1.19 | 0.18 | 0 | |
Dry retching [27] | 1 | 0.93 | 0.76 to 1.15 | ||
2 | 2.35 | 0.93 to 5.93 | 1.03 | 3 | |
Vomiting [27] | 1 | 1.51 | 0.26 to 8.91 | ||
Ginger versus Dimenhydrinate | |||||
Drowsiness [26] | 1 | 0.08 | 0.03 to 0.18** | ||
Heartburn [26] | 1 | 1.44 | 0.65 to 3.20 |