Table 5.

Adverse events (n, %).

Groups	Breast tenderness	Weight gain	Hot flashes and night sweats	Headaches and insomnia	Vaginitis	Back pain	Device dislodgement
Observation	9	24	3	6	2	3	—
Control	6	26	4	5	4	9	10 (22.73%)
χ 2	1.010	0.003	0.088	0.201	0.574	3.021	10.561
Pvalue	0.315	0.959	0.766	0.654	0.449	0.082	0.001