Table 2. Results from Meta-Analysis Comparing Ginger to Placebo in Improvement of Nausea and Vomiting in Early Pregnancy

Study	Intervention Group	Control Group	Odds Ratio	95% CI
Basirat et al.³¹	28/32	21/30	3.00	0.81–11.1
Fischer-Rasmussen et al.³³	19/27	4/27	13.66	3.56–52.43
Keating et al.³²	10/13	2/10	13.33	1.78–100.14
Vutyavanich et al.³⁴	28/32	10/35	17.50	4.87–62.87
Ozgoli et al.³⁵	27/32	20/35	4.05	1.26–12.99
Smith et al.²⁶	68/120	69/115	0.87	0.52–1.47
Total (random effects)	180/256	126/252	4.89	1.88–12.73