Participants
RECRUITMENT
Participants were undergraduate students at the National University of Singapore. Inclusion criteria were: full-time undergraduate student, aged between 20 and 24, unmarried, childless and not currently expecting, self-identifies as heterosexual, and Singaporean citizen. Participants were recruited in September and October 2021 via online advertisements posted in student clubs and a student research recruitment portal. The study was advertised as the “Youth Outlook on Life Opportunities Study” to reduce self-selection into the study on the basis of a particular interest in fertility-related issues. However, participants were informed before the start of the online survey that the questionnaire included questions on dating history and fertility issues. Participants were aware that they could withdraw from the study at any time. At the end of the survey, participants who completed the survey received a S$15 health voucher as a token of appreciation. The online survey was only accessible using the student’s unique student ID and allowed only one attempt from each ID, which ensured that the data collected pertained to 1,000 unique participants.A total of 1,084 participants initiated the survey. Of these, 84 did not meet the inclusion criteria and did not participate in the survey or receive the information intervention. The remaining 1,000 participants completed the survey and were randomized into the three treatment arms. 