Studien Ungdomsutsikter på livsmuligheter
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.
Studieoversikt
Status
Forhold
Detaljert beskrivelse
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.
Studietype
Registrering (Faktiske)
Fase
- Ikke aktuelt
Kontakter og plasseringer
Studiesteder
-
-
Singapore
-
Singapore, Singapore, Singapore, 119077
- National University of Singapore
-
-
Deltakelseskriterier
Kvalifikasjonskriterier
Alder som er kvalifisert for studier
Tar imot friske frivillige
Kjønn som er kvalifisert for studier
Beskrivelse
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
Studieplan
Hvordan er studiet utformet?
Designdetaljer
- Primært formål: Annen
- Tildeling: Randomisert
- Intervensjonsmodell: Parallell tildeling
- Masking: Enkelt
Våpen og intervensjoner
Deltakergruppe / Arm |
Intervensjon / Behandling |
|---|---|
|
Placebo komparator: Control
Receives a fact sheet on diabetes in Singapore |
The following information is provided: Diabetes risk factors and treatment Diabetes-related policies |
|
Eksperimentell: Fertility-related information
Receives accurate information on age-related fertility |
The following information is provided: Age and fertility IVF success rates and side effects |
|
Eksperimentell: 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 |
Hva måler studien?
Primære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Ideal age at marriage (both self and future spouse), first birth and number of children
Tidsramme: 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
Tidsramme: 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)
Tidsramme: 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
|
Sekundære resultatmål
Resultatmål |
Tiltaksbeskrivelse |
Tidsramme |
|---|---|---|
|
Expected levels of education (both self and future spouse)
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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
Tidsramme: 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)
Tidsramme: 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
Tidsramme: 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
Tidsramme: Within six years of initial survey
|
Whether graduated and class of honours |
Within six years of initial survey
|
|
Employment status six months after graduation
Tidsramme: Within six years of initial survey
|
Whether employed, full-time status |
Within six years of initial survey
|
|
Starting salary
Tidsramme: Within six years of initial survey
|
Continuous |
Within six years of initial survey
|
Samarbeidspartnere og etterforskere
Sponsor
Etterforskere
- Hovedetterforsker: Poh Lin Tan, PhD, National University of Singapore
Studierekorddatoer
Studer hoveddatoer
Studiestart (Faktiske)
Primær fullføring (Faktiske)
Studiet fullført (Antatt)
Datoer for studieregistrering
Først innsendt
Først innsendt som oppfylte QC-kriteriene
Først lagt ut (Faktiske)
Oppdateringer av studieposter
Sist oppdatering lagt ut (Faktiske)
Siste oppdatering sendt inn som oppfylte QC-kriteriene
Sist bekreftet
Mer informasjon
Begreper knyttet til denne studien
Ytterligere relevante MeSH-vilkår
Andre studie-ID-numre
- NUS-IRB-2020-362
Plan for individuelle deltakerdata (IPD)
Planlegger du å dele individuelle deltakerdata (IPD)?
IPD-planbeskrivelse
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-delingstidsramme
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.
Tilgangskriterier for IPD-deling
Approval from ALSET, Provost's Office, NUS-IRB and in compliance with Singapore's Personal Data Protection Act
IPD-deling Støtteinformasjonstype
- STUDY_PROTOCOL
- ICF
Legemiddel- og utstyrsinformasjon, studiedokumenter
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