Demographics
A total of 888 reproductive individuals (aged 18-45 years) completed the electronic questionnaires. These participants were subdivided into two groups: 841 (94.7%) currently pregnant, and 47 (5.3%) considering pregnancy or receiving fertility treatment. The vast majority was female (88.9%), between the age of 24-35 years (83.5%). 873 (98.3%) respondents were Chinese Han Nationality, and 15 (2.7%) were others. Up to 718 participants (80.9%) had no religious belief, and only 170 (19.1%) reported yes. A summary of the demographics of the study population is shown in Table S1.