One study directly compared the amenorrhea rates after the use of the Cavaterm or NovaSure ablation systems. 24 At 12 months, the rate of amenorrhea in the Cavaterm treatment arm was significantly less than that in the NovaSure arm (12% versus 43%; P=0.04), but patient satisfaction at 12 months was not different between the two groups (83% Cavaterm versus 92% NovaSure).

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