本文へスキップ
Likelier

行動 vs. 不行動の後悔

中絶するか予期しない妊娠を続けるか

行動した場合

中絶する

5.0%

行動しなかった場合

予期せぬ妊娠を継続する

4.0%

それぞれの選択を後で後悔した人の割合。バーと完全な記録は下に表示されます。


健康

最終確認 2026-04-25

証拠の質 4.63/5

8次元のレビュー評価。基準は 品質ルーブリック 。各次元は1〜5で評価。

D1 出典の検証
5/5
D2 出典の権威性と独立性
4/5
D3 後悔率の正確性
4/5
D4 出典の比較可能性
4/5
D5 ギロヴィッチ・パターン
5/5
D6 文章の質
5/5
D7 注意事項の完全性
5/5
D8 サンプルの質
5/5
平均 4.63/5
直接的な証拠
Two paths diverging at a quiet crossroads, one curving left and one curving right, both leading into soft light.

行動への後悔

中絶する

5.0%

処置後5年で約5%

妊娠制限近くで望んだ中絶を受けた米国女性

処置後5年

不作為への後悔

予期せぬ妊娠を継続する

4.0%

5年で約4% — 妊娠継続について後悔を表明

中絶を拒否されて出産した米国女性(Turnaway Study)

拒否後5年

この選択を後悔した割合

balanced — ほぼ均衡 — どちらの選択も同程度の後悔を伴います。

関連する決断

意味的に類似する決断 — 同じ領域、異なるトレードオフ。

健康

精管切除術

この選択を後悔した割合

均衡

ほぼ均衡

family

子供を持つ

この選択を後悔した割合

均衡

ほぼ均衡

family

養子縁組 vs. 自ら育てる

この選択を後悔した割合

行動が優勢

行動の後悔が4.8倍高い

健康

卵管結紮術

この選択を後悔した割合

行動が優勢

行動の後悔が1.4倍高い

健康

豊胸手術

この選択を後悔した割合

均衡

ほぼ均衡

健康

セラピーあり・なし

この選択を後悔した割合

均衡

ほぼ均衡

健康直接

割礼の決断

この選択を後悔した割合

均衡

ほぼ均衡

family

出産方法の選択

この選択を後悔した割合

行動が優勢

行動の後悔が2.7倍高い

The UCSF Turnaway Study — the largest longitudinal study of abortion decision outcomes — tracked women from 30 US facilities over five years. Among those who received an abortion, about 5% did not affirm it was the right decision at the five-year mark; relief was the predominant emotion at every time point. Among women denied an abortion who carried to term, about 4% expressed regret about continuing the pregnancy by the same five-year mark. The near-symmetry is the headline: both paths converge on high reported satisfaction.

This finding challenges narratives on both sides of the debate. The claim that abortion leads to lasting regret is not supported — roughly 5% of women did not affirm the decision, and even that figure includes ambivalence rather than outright regret. Equally, the claim that women forced to continue unwanted pregnancies will resent the outcome is not borne out at the five-year horizon — roughly 4% report not being glad they kept the child, and most adapted with declining distress over time. The emotional trajectory matters: initial distress among turnaways was substantial (sadness, anger, anxiety in the weeks after denial), but it declined steadily.

The caveat that dominates is selection. The turnaway group did not choose to continue — they were denied by gestational-limit policies. This quasi-natural experiment is the study’s methodological strength but means the “inaction” side represents forced continuation, not a deliberate preference. Attrition was also significant: 38% of the turnaway cohort was lost by year five, and those who stayed may have been those who adapted best. The emotional picture is more complex than a single satisfaction item suggests — significant minorities reported mixed feelings even while affirming the decision was right.

出典: 行動

根拠台帳

以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。

  1. [1] Social Science & Medicine / Rocca et al. — Decision rightness and relief predominate over the years following an abortion
    Decision rightness and relief predominate over the years following an abortion
    統計値
    At 5 years, 95% of women who obtained an abortion reported it was the right decision; 99% at the final interview
    抜粋
    “"Decision rightness remained high and steady over the five-year study period. By five years, 95% of participants reported that having the abortion was the right decision for them. Relief was the predominant emotion at all time points." ”
    出典データ
    2020-01-01
    アクセス日
    2026-04-25
    計算過程
    The Turnaway Study followed women from 30 US facilities over 5 years. The 95% "right decision" figure at 5 years implies ~5% did not affirm it was right, which is the upper bound for regret. We use 0.05 as the regret_rate.
  2. [2] UC San Francisco — Five Years After Abortion, Nearly All Women Say It Was the Right Decision, Study Finds
    Five Years After Abortion, Nearly All Women Say It Was the Right Decision, Study Finds
    統計値
    More than 95% of participants reported that abortion was the right decision over five years of follow-up
    抜粋
    “"More than 95 percent of participants reported that having the abortion was the right decision for them over five years of follow-up. Feelings of relief and happiness increased over time, while negative emotions declined." ”
    出典データ
    2020-01-12
    アクセス日
    2026-04-25
    計算過程
    Press summary of the Rocca et al. peer-reviewed paper. Corroborates the 95% figure and adds that positive emotions increased over time while negative emotions diminished.

出典: 不作為

根拠台帳

以下の各数値は各出典が報告した内容であり、引用した原文の抜粋と算出方法を記載しています。リンクをクリックして直接確認できます。

  1. [1] ANSIRH / University of California, San Francisco — The Turnaway Study
    The Turnaway Study

    See all 2 Likelier entries citing this source →

    統計値
    By 5 years, 96% of women who were denied an abortion and carried to term said they were glad they kept the baby
    抜粋
    “"By five years after being denied an abortion, 96% of women turned away indicated they were glad they had kept their pregnancies." ”
    出典データ
    2022-06-15
    アクセス日
    2026-04-25
    計算過程
    The Turnaway Study's "turnaways" who carried to term form the inaction group. 96% glad implies ~4% not glad, used as the regret_rate. Note the smaller sample (n≈161 who gave birth) and the selection effect: women denied abortion who then chose adoption are excluded from this figure.
  2. [2] Social Science & Medicine / Foster et al. — Emotions over five years after denial of abortion in the United States
    Emotions over five years after denial of abortion in the United States
    統計値
    Women denied abortion who gave birth showed initial distress that declined over 5 years; by 5 years most reported positive feelings about the child
    抜粋
    “"Among women denied abortions who gave birth, initial sadness and anger declined over time. By five years, the majority reported positive feelings about their child and situation." ”
    出典データ
    2020-12-01
    アクセス日
    2026-04-25
    計算過程
    Longitudinal emotion tracking for the denial group. Confirms that initial distress fades and most women adapt positively, consistent with the 96% "glad" figure from the main Turnaway summary.

注意事項

2つの集団は互換性がない:中絶を受けた女性は自らその決定を選択したが、「ターンアウェイ」は妊娠期間制限政策により拒否された — 自由に継続を選んだのではない。この準自然実験は研究の強みだが一般化可能性も制限する。Turnaway Studyは脱落(5年目までにターンアウェイ群の38%がフォローアップから失われた)と、適応がうまくいった女性の方が研究に残る傾向が強かった可能性で批判されている。感情的複雑さは単一の「正しい決定」項目では捉えられない:中絶した女性の33-41%は正しいと肯定しながらも何らかの後悔を報告し、ターンアウェイの初期の苦悩は相当なものだった。5年時点の結果のほぼ対称性(95%対96%の「正しい決定」)はそれ自体が発見である — 両方の経路が報告された高い満足度につながる。

生データ: /api/decisions.json

このデバイスで最近見た項目