Abstract

PIP: 3 IUD studies were performed by the University Dept. of Obstetrics and Gynecology, Kandang Kerbau Hospital, Singapore, between 1974-80. The IUDs used were the Cu T 220C, Cu 7, Latex Leaf, Dalkon Shield, Multiload (ML) Cu 250, and the ML Cu 375 and were used on 1992 patients over 34,023 woman-months of use. At 24 months, the Dalkon Shield had a significantly higher accidental pregnancy rate when compared with the Cu 7 (P0.05) and the ML Cu 250 (P0.05). The Cu 7 users had a significantly higher expulsion rate than users of the Latex Leaf (P0.001), ML Cu 250 (P0.001), and Dalkon Shield (P0.01). The Cu 7 had a significantly higher accidental pregnancy rate when compared with the Cu T 220C (P0.001) and ML Cu 250 (P0.05). The Cu T 220C also had a significantly higher expulsion rate when compared with the ML Cu 250 (P0.05). A comparison between the ML Cu 250 and ML Cu 375 showed no significant differences between the 2 devices.