RESULTS	There was significantly shorter and lighter puerperium in the IUS group ( 20.2 7.7 days and 3.1 1.6 pads/day ) than in the IUCD ( 33.4 9.5 days and 4.9 2.4 pads/day ) and the control ( 27.0 11.4 days and 4.9 2.3 pads/day ) groups ( P < 0.012 and P < 0.0001 , respectively ) .\