人生の機会に関する若者の展望に関する研究
Singapore's fertility rate is currently below 1.2, raising concerns about population ageing and long-term sustainability. The fertility decline is characterized by falling birth rates among women in their 20s with almost no recuperation among women in their 30s. This project explores a) whether informational imperfections help to account for high intended ages at childbearing in Singapore, b) whether informational interventions significantly affect ideal and expected ages at marriage and childbearing, and expected probability of undergoing social egg freezing, and c) whether informational interventions significantly affect expected and actual educational outcomes and labor market outcomes.
Our hypotheses are:
- University students have knowledge gaps about age-related onset of infertility, assisted reproductive technologies and local policy initiatives related to age at marriage and childbearing, especially among male students.
- Being exposed to accurate information in these domains leads to significantly lower ideal/expected ages at marriage and childbearing, and higher expected probability of undergoing social egg freezing, immediately after the intervention.
- Being exposed to accurate information in these domains does not lead to lower educational and labor market expectations immediately after the intervention among either male or female students, or to significant differences in module choices, Cumulative Average Point (CAP), starting salary and employment status of university students in the following academic semester and six months after graduation, among either male or female students.
調査の概要
状態
条件
詳細な説明
The project conducts a randomized controlled trial involving 1000 full-time undergraduate students at NUS. The trial has three stages.
In the first stage, participants will be recruited through campus advertisements.
In the second stage, participants who meet the eligibility criteria will complete a 30-40 minute online survey. The survey includes the following:
- a background survey on items including age, race, family income and parental background,
- a section on dating history,
- questions on ideal/expected ages at marriage, expected probability of undergoing social egg freezing, and fertility and educational and career expectations,
- a section on mental wellbeing,
- an awareness survey on age-related onset of infertility, assisted reproductive technologies, and local policy initiatives related to age at marriage and childbearing,
- an informational intervention. One-third of participants (333 individuals) are randomly assigned to receive accurate information on the age-related fertility survey items. One-third of participants (333 individuals) are randomly assigned to receive accurate information on policy-related survey items. One-third of participants (334 individuals) receives a fact sheet on diabetes in Singapore. Participants are asked to read the information thoroughly,
- selected questions from c), which collects data on after-intervention intended ages at marriage and fertility and educational and career expectations, as well as questions about whether the questions were useful or led to anxiety.
In the third stage, the students' responses are linked to the Educational Data Lake managed by ALSET, Provost's Office, NUS, which collects data on students' module choices (whether within the same major, in a different major within the same faculty or in a different faculty) and CAP in the following academic semester and at graduation, graduation status, and starting salary and employment status six months after graduation. All participants are informed and these linkages are mentioned in the consent form.
After the data collection is completed, we will analyse the data using a difference-in-differences econometric model. Our model compares three sets of dependent variables at different points in time:
- Ideal/expected ages at marriage and fertility, expected probability of undergoing social egg freezing, and educational and career expectations, compared before and immediately after the intervention,
- Module choices and CAP, compared before the survey and in the following academic semester and at graduation, and graduation status,
- Starting salary and employment status, compared between the control and treatment groups six months after graduation (multiple regression rather than difference-in-differences model)
The results are compared by gender, faculty, educational and career expectations, and other background characteristics, including dating history and mental wellbeing.
研究の種類
入学 (実際)
段階
- 適用できない
連絡先と場所
研究場所
-
-
Singapore
-
Singapore、Singapore、シンガポール、119077
- National University of Singapore
-
-
参加基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria:
- Full-time NUS undergraduate
- Singaporean citizen
- Aged 20-24
- Never been married
- Childless and not currently expecting
- Identify as heterosexual
Exclusion Criteria:
- Student enrolled in faculty where the Dean has not provided approval for recruitment
研究計画
研究はどのように設計されていますか？
デザインの詳細
- 主な目的：他の
- 割り当て：ランダム化
- 介入モデル：並列代入
- マスキング：独身
武器と介入
参加者グループ / アーム |
介入・治療 |
|---|---|
|
プラセボコンパレーター：Control
Receives a fact sheet on diabetes in Singapore |
The following information is provided: Diabetes risk factors and treatment Diabetes-related policies |
|
実験的：Fertility-related information
Receives accurate information on age-related fertility |
The following information is provided: Age and fertility IVF success rates and side effects |
|
実験的：Policy-related information
Receives accurate information on local policy initiatives related to age at marriage and childbearing |
The following information is provided: Assisted reproductive technology treatment subsidies Other fertility-related policies |
この研究は何を測定していますか？
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Ideal age at marriage (both self and future spouse), first birth and number of children
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous |
Within one year and two years of initial survey
|
|
Expected age at marriage (both self and future spouse), first birth and number of children
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous percent chance by the following ages A. 25 B. 30 C. 35 D. 40 |
Within one year and two years of initial survey
|
|
Expected probability of undergoing social egg freezing (only for females respondents)
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous percent chance of social egg freezing if available at the following ages: A. 25 B. 30 C. 35 D. 40 |
Within one year and two years of initial survey
|
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Expected levels of education (both self and future spouse)
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous percent chance: A. Less than Bachelor's Degree B. Bachelor's Degree or higher C. Master's Degree or higher D. Doctoral Degree or higher |
Within one year and two years of initial survey
|
|
Expected earnings (both self and future spouse)
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous at the following ages: A. 25 B. 30 C. 35 D. 40 |
Within one year and two years of initial survey
|
|
Expected full-time working status
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous percent chance by the following ages A. 25 B. 30 C. 35 D. 40 |
Within one year and two years of initial survey
|
|
Expected occupation (self) at age 35
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous percent chance: A. Full-time homemaker B. Manager or administrator in a private company C. Manager or administrator in the government/education sector D. Professional without doctoral degree (e.g. engineer, architect, accountant, social worker, teacher) E. Professional with doctoral degree or equivalent (lawyer, physician, scientist, college professor) F. Sales (e.g. insurance agent, real estate) G. Other (e.g. small business owner, etc.) |
Within one year and two years of initial survey
|
|
Expected contribution to housework and childcare if married with young children
時間枠：Within one year and two years of initial survey
|
During initial survey: Continuous percentage |
Within one year and two years of initial survey
|
|
Usefulness and anxiety over information presented
時間枠：Within one year and two years of initial survey
|
During initial survey: Strongly disagree, Disagree, Neither agree nor disagree, Agree, Strongly agree |
Within one year and two years of initial survey
|
|
Cumulative Point Average (CAP)
時間枠：Within two years and six years of initial survey
|
Measured in the following academic semester and at graduation |
Within two years and six years of initial survey
|
|
Module choices
時間枠：Within two years and six years of initial survey
|
Whether within the same major, in a different major within the same faculty or in a different faculty, in the following academic semester and at graduation |
Within two years and six years of initial survey
|
|
Graduation and honours
時間枠：Within six years of initial survey
|
Whether graduated and class of honours |
Within six years of initial survey
|
|
Employment status six months after graduation
時間枠：Within six years of initial survey
|
Whether employed, full-time status |
Within six years of initial survey
|
|
Starting salary
時間枠：Within six years of initial survey
|
Continuous |
Within six years of initial survey
|
協力者と研究者
捜査官
- 主任研究者：Poh Lin Tan, PhD、National University of Singapore
研究記録日
主要日程の研究
研究開始 (実際)
一次修了 (実際)
研究の完了 (推定)
試験登録日
最初に提出
QC基準を満たした最初の提出物
最初の投稿 (実際)
学習記録の更新
投稿された最後の更新 (実際)
QC基準を満たした最後の更新が送信されました
最終確認日
詳しくは
本研究に関する用語
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
IPD プランの説明
The collected data, data catalogue and research materials (i.e. study protocol, informed consent form, survey items) will be made available to researchers at the National University of Singapore (NUS) through the ALSET Data Lake within five years of the conclusion of the research project. Data will remain available for at least 10 years after any publication making use of the data. The ALSET Data Lake is managed by the NUS Instituted for Applied Learning Sciences and Educational Technology and operated by NUS IT. Questions about accessing the data from parties outside NUS can be sent to the PI or alsdl@nus.edu.sg.
IPD 共有時間枠
The research data will be made available through the ALSET Data Lake within five years of the conclusion of the research project. Data will remain available for at least 10 years after any publication that makes use of the data.
IPD 共有アクセス基準
Approval from ALSET, Provost's Office, NUS-IRB and in compliance with Singapore's Personal Data Protection Act
IPD 共有サポート情報タイプ
- STUDY_PROTOCOL
- ICF
医薬品およびデバイス情報、研究文書
米国FDA規制医薬品の研究
米国FDA規制機器製品の研究
この情報は、Web サイト clinicaltrials.gov から変更なしで直接取得したものです。研究の詳細を変更、削除、または更新するリクエストがある場合は、register@clinicaltrials.gov。 までご連絡ください。 clinicaltrials.gov に変更が加えられるとすぐに、ウェブサイトでも自動的に更新されます。