Trial Outcomes & Findings for Testing the Impact of Two Posters on Contraceptive Knowledge, Contraceptive Preferences, and Perceived Pregnancy Risk (NCT NCT03372369)

Participants were enrolled between January 26 and February 13, 2018. They were enrolled and participated in the study through a survey distributed on Amazon Mechanical Turk.

Testing the Impact of Two Posters on Contraceptive Knowledge, Contraceptive Preferences, and Perceived Pregnancy Risk

The CKA is a 25-item tool covering knowledge gaps like long-acting reversible contraceptives, emergency contraception, common myths, and efficacy rates which will be used to determine contraception knowledge. One point is added for each correctly answered question for a total possible score of 25. Higher scores reflect greater contraceptive knowledge.

Women will be asked whether they are planning on switching contraceptive methods in the next year and which methods of contraception they would hypothetically consider using if they were to switch contraceptive methods within the next year. They are then asked to rank the methods in order of how likely they would be to use each method. A woman's "contraceptive preference" is the method that she says she would be most likely to use. Methods will be scored from 0-3: '0' for no method, '1' for ineffective methods like condoms, '2' for effective methods like the Pill, and '3' for highly effective methods like Intrauterine Devices (IUDs). Positive scores reflect improvements in the effectiveness of the contraceptive method that women say they are likely to use.

Women are asked what their chances of getting pregnant this year are (very high=4, high=3, moderate=2, low=1, very low=0). A good outcome in terms of reducing the risk of unprotected sex and unplanned pregnancy would be increased perceived pregnancy risk as reflected in a higher score.

Women are asked what their chances of getting pregnant this year are (very high, high, moderate, low, very low). This response is compared to the most effective contraceptive method women reported using in the past three months using the same categories of effectiveness as in the "change in effective contraception preference score" outcome. Women received a score of 1 if their perceived pregnancy risk was accurate based on their current contraceptive method and a score of 0 if it was inaccurate. Women's perceived pregnancy risk was accurate if: they used a highly effective method and they said they were at very low risk; if they used an effective method and they said they were at low or moderate risk; if they used a less effective method and said they were at moderate or high risk; or if they used no method and said they were at very high risk. A good outcome would be increased accuracy of perceived pregnancy risk as reflected by a higher score.