Appendix Table 2.

Vignettes presented during interviews and characteristics varied in surveys

Vignette description	Vignette wording in interviews	Characteristics varied in surveys
Self-managed abortion	Person A realizes their period is three weeks late. They decide to take a pregnancy test at home. The test is positive. They order abortion pills online. Once the pills arrive, they take them according to the directions. They take another pregnancy test two weeks later at home. The test is negative.	Successful abortion Failed abortion
Fetal anomaly	Person B is thrilled to be pregnant. At their prenatal visit at 20 weeks, their health care provider recommends routine screening for birth defects. The test reveals the fetus has a heart defect. They go to a clinic to have surgery to end the pregnancy.	No emotion named Thrilled about pregnancy
Emergency contraception	Person C always makes sure their partner uses condoms when having penile-vaginal sex. One night, the condom breaks. The next day, they go to the pharmacy to get emergency contraception. They take the emergency contraception as directed.	No condom use Condom breaks
Medication abortion in clinic	Person D realizes their period is three weeks late. They take a pregnancy test at a clinic. The test is positive. They get abortion pills at the clinic. They take the pills according to the directions. They go back to the clinic a week later and take another pregnancy test. The pregnancy test is negative.	Period three weeks late Period six weeks late
Natural supplements	Person E misses their period. They take a pregnancy test at home. The test is positive. They order natural supplements online that advertise ending pregnancy. They take the supplements as directed. Two weeks later they take another pregnancy test, which is negative.	Not included in surveys
Miscarriage intervention at 5 weeks pregnant	Person F is 5 weeks pregnant and starts to bleed heavily for several hours. Their doctor says the pregnancy will not grow anymore and prescribes pills to remove it. Six weeks later, Person F gets their period.	Medical miscarriage management
		Expectant miscarriage management
Miscarriage intervention at 12 weeks pregnant	Person G is 12 weeks pregnant. When they have their first ultrasound, there is no cardiac activity, and their doctor recommends having the fetus removed. Person G has a surgical procedure to remove the fetus.	Surgical miscarriage management
		Medical miscarriage management
Missed period	Person H misses their period. They order an herbal supplement online and the next week their period comes, heavier than usual.	Not included in surveys