| Literature DB >> 8536454 |
S Gu1, I Sivin, M Du, L Zhang, L Ying, F Meng, S Wu, P Wang, Y Gao, X He.
Abstract
The effectiveness of Norplant implants over a seven year period of continuous use was studied in a multicenter trial. Pregnancy rates were 0.4 per 100 in both year six and year seven. More than 3,600 women completed 6 years and more than 2,400 women completed 7 years. Pregnancy rates increased with weight (p < .05) and decreased with age, but in years 6 and 7 combined, the pregnancy rate neither reached nor exceeded 1 per 100 woman years in any 5 year age group or in any 10 kg weight group.Entities:
Keywords: Age Factors; Asia; Biology; Body Weight; China; Clinical Research; Clinical Trials; Contraception; Contraception Failure; Contraceptive Effectiveness; Contraceptive Implants; Contraceptive Methods; Contraceptive Usage; Demographic Factors; Developing Countries; Eastern Asia; Family Planning; Physiology; Population; Population Characteristics; Research Methodology; Research Report
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Year: 1995 PMID： 8536454 DOI： 10.1016/s0010-7824(95)00141-7
Source DB: PubMed Journal: Contraception ISSN： 0010-7824 Impact factor: 3.375