| Field | Before | After |
|---|---|---|
| Field Trial Status | Before on_going | After completed |
| Field Trial End Date | Before December 31, 2017 | After May 11, 2020 |
| Field Last Published | Before January 27, 2016 08:10 PM | After May 14, 2020 06:32 PM |
| Field Study Withdrawn | Before | After No |
| Field Intervention Completion Date | Before | After November 14, 2015 |
| Field Data Collection Complete | Before | After Yes |
| Field Final Sample Size: Number of Clusters (Unit of Randomization) | Before | After 28 radio stations |
| Field Was attrition correlated with treatment status? | Before | After No |
| Field Final Sample Size: Total Number of Observations | Before | After 28 radio station coverage areas |
| Field Final Sample Size (or Number of Clusters) by Treatment Arms | Before | After 14 radio station coverage areas in treatment, 14 radio station coverage areas in control |
| Field Is there a restricted access data set available on request? | Before | After No |
| Field Program Files | Before | After Yes |
| Field Program Files URL | Before | After https://www.socialscienceregistry.org/trials/1015 |
| Field Data Collection Completion Date | Before | After January 16, 2019 |
| Field Is data available for public use? | Before | After No |
| Field | Before | After |
|---|---|---|
| Field Affiliation | Before | After University of Chicago |
| Field | Before | After |
|---|---|---|
| Field Paper Abstract | Before | After This study uses a randomized controlled trial (RCT) to evaluate the effectiveness of a mass media campaign designed to reduce pregnancy among Latina teenagers. We aired public service announcements (PSAs) on terrestrial radio stations in California. The sample includes 28 radio stations and over 11,000 births to Latina teenagers in 2016. The PSA, narrated by a young Latina, stressed the opportunity costs to teenage mothers of having a baby, e.g., missed opportunities for fun, socializing with friends, or attending school. Although this message expresses themes articulated by Latina teens and young mothers whom we interviewed, geocoded birth records suggest the PSAs had little effect. With data on all births in the state obtained from the California Department of Public Health, we can reject the hypothesis that the PSAs reduced births to Latina teenagers by 9% or more based on the 90% confidence interval of the estimated average treatment effect. In addition to shedding light on this particular radio campaign, this study provides a template for the design and analysis of mass media campaigns to improve other public health outcomes. |
| Field Paper Citation | Before | After Green, D.P., Zelizer, A. & Lin, W. How Effective Are Radio Messages Aimed at Reducing Teen Births Among Latinas? A Randomized Controlled Trial. Popul Res Policy Rev (2020). https://doi.org/10.1007/s11113-020-09583-x |
| Field Paper URL | Before | After https://rdcu.be/b36NC |