the difference in continuation rates was mainly due to menstrual disturbances ( e.g . amenorrhoea , irregular bleeding ) which were higher with lng iud ( 27.9 per 100 users ) as compared to the copper devices ( 13.4-15.4 per 100 users ) at 36 months of use .
C0025345
menstrual disturbances
C0002453
amenorrhoea