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Unintended pregnancies are pregnancies that are mistimed, unplanned or unwanted at the time of conception.〔(【引用サイトリンク】url=http://www.cdc.gov/reproductivehealth/unintendedpregnancy/ )〕 Unintended pregnancy mainly results from engaging in vaginal sexual activity without the use of contraception, or due to incorrect use of a contraceptive method,〔 but may also arise from the failure of the contraception method when used correctly to prevent pregnancy. Available contraception methods include use of birth control pills, a condom, intrauterine device (IUD, IUC, IUS), contraceptive implant (implanon/nexplanon), hormonal patch, hormonal ring, cervical caps, diaphragms, spermicides, or sterilization.〔(Dawn Stacey: Contraception. About.com. ) Retrieved 11 October 2009.〕 Women choose to use a contraceptive method based on method efficacy, medical considerations, side effects, convenience, availability, friends' or family members' experience, religious views, and many other factors. Some cultures limit or discourage access to birth control because they consider it to be morally or politically undesirable. Unintended pregnancies may also result from rape, incest or various other forms of forced or unwanted sex. Unintended pregnancies may be unwanted pregnancies or mistimed pregnancies.〔 Worldwide, 38% of pregnancies (about 80 million pregnancies) were unintended in 1999.〔〔 Unintended pregnancies are the main reason for induced abortions,〔 resulting in about 42 million induced abortions;〔 not all unintended pregnancies result in abortions or unwanted children. Unintended pregnancy has been linked to numerous maternal and child health problems.〔 ==Intention== An intended pregnancy is one that is consciously desired at the time of conception.〔 A pregnancy is intended if either partner intended or desired a pregnancy to occur, though the other partner may not want a pregnancy either at all or at that time, or he/she may be ambivalent to a pregnancy.〔 Feelings towards a pregnancy can change during the course of a pregnancy. For instance, a change of circumstances might lead to the continued pregnancy being unwanted and perhaps a desire to terminate an initially intended pregnancy. On the other hand, an initially unintended pregnancy might later be welcomed. Couples often desire to control not just the number of children, but also the timing.〔〔(【引用サイトリンク】Healthy Timing and Spacing of Pregnancy: HTSP Messages )〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Unintended pregnancy」の詳細全文を読む スポンサード リンク
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