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Correspondence
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Volume 346:376-377 January 31, 2002 Number 5
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Copper Intrauterine Devices and Tubal Infertility among Nulligravid Women

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To the Editor: Hubacher and colleagues (Aug. 23 issue)1 report that the use of copper intrauterine devices (IUDs) is not associated with an increased risk of tubal occlusion among nulligravid women. However, only 6 percent of the women in the study had used an IUD. Accordingly, the numbers used to test for an effect of the duration of IUD use, an extremely important aspect of the study, were even smaller. Only 44 women had used a copper IUD for more than one year, of whom only 8 had tubal occlusion. Nevertheless, the odds ratios for tubal occlusion show a moderate, . . . [Full Text of this Article]

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