The purpose of the investigator's study is to assess the effect of a standardized prenatal testing educational video on the use of prenatal genetic testing and decision-making.

This is a prospective randomized trial of video education on prenatal testing vs. usual care, with the goal to assess women's prenatal testing choices, understanding of testing options and decisional conflict and regret. Participants will be recruited from a convenience sample of patients presenting for prenatal care at Naval Medical Center San Diego (NMCSD).

While receiving prenatal care at NMCSD, all women are offered the option of screening for aneuploidy (serum screen (with or without nuchal translucency ultrasound) or cell free DNA testing) or diagnostic testing (chorionic villous sampling or amniocentesis) or no testing in pregnancy.

After providing consent, participants will be randomized to video education or usual care. Randomization will be completed using a random number table. Women randomized to the intervention group (video education) will view the prenatal screening video made by the Genetic Support Foundation and the Washington Department of Health, the 4.5 minute video "How to Decide About Prenatal Genetic Testing," available at: https://www.geneticsupportfoundation.org/genetics-and-you/pregnancy-and-genetics/prenatal-genetic-testing-videos .7 They will then complete the study related surveys at their initial obstetric visit. The educational video was created with input from clinicians including licensed genetic counselors, obstetricians, maternal fetal medicine physicians, and patients. Extensive testing and reviewing was completed to ensure adequate comprehension by a wide range of audiences and minimize counseling bias. Women randomized to the control group will receive routine prenatal care with no additional study intervention other than completion of the study related surveys at baseline (initial prenatal testing). Current national guidelines recommend offering all women prenatal diagnosis and prenatal screening at the beginning of the pregnancy.1

The primary outcome for this study will be screening uptake rates, and will be based on review of the patient's electronic medical record. Secondary outcomes will include invasive diagnostic test rates, participant knowledge about testing (as assessed using the Maternal Serum Screening Knowledge Questionnaire,2 and decisional conflict (as assessed by the Decisional Conflict Scale) and decisional regret (as assessed by the Decision Regret Scale). These assessments will be conducted at time of prenatal testing (< 20 weeks). (Appendix A)

The study questionnaire will include a check box for participants to indicate if they would be willing to participate in a follow on qualitative study to assess participant's personal experience related to their method of education about prenatal testing. This component of the study will aim to determine personal and social reasoning behind their decisions, and to further explore their experience, beliefs and behaviors. Interested participants from each group (both intervention and control) will be contacted to arrange a telephone or in person interview. (Appendix C) Participants will be interviewed in person or over the phone.

Inclusion Criteria:

• Greater than or equal to 18 years of age
• Gestational age less than or equal to 20 weeks
• Singleton gestation
• Not completed aneuploidy screening in this pregnancy
• Available to watch the 15 minute video
• Ability to read, write, and understand English

Exclusion Criteria:

• Pregnant women not eligible for care at Military Treatment Facility
• Less than 18 years of age
• Gestational age greater than 20 weeks
• Multiple gestation
• Aneuploidy testing in current pregnancy