10 completed, 1 recruiting, 1 unknown. 12 Not applicable.
| Phase | Trials | Status |
|---|---|---|
| Not applicable | 12 | Completed 10, Recruiting 1, Unknown 1 |
Follow Letter: new trials by email Literature Review of Letter trials Research Report on Letter
Tick up to 5 trials to compare them side by side (eligibility, arms, endpoints, adverse events) in a Literature Matrix.
| Trial | Phase | Status | Sponsor | Enrollment | Start | Updated |
|---|---|---|---|---|---|---|
| I CAN DO Surgical ACP Letter, AD, PREPARE website - Surgical Advanced Care Planning | Not applicable | Recruiting | University of California, San Francisco | 6000 | 2025-02-26 | 2026-08-11 |
| Mammogram Mail- and Phone-based Interventions Postcard, Letter, Auto-dialer - Breast Cancer | Not applicable | Completed | Geisinger Clinic | 14386 | 2023-05-10 | 2024-10-10 |
| Efficacy of Communication Modalities for Promoting Flu Shots Letter, Patient portal, SMS - Influenza Vaccination, Health Promotion | Not applicable | Completed | Geisinger Clinic | 43225 | 2022-09-06 | 2022-10-12 |
| Evaluation of Letters Promoting Colorectal Cancer Testing Letter, Loss Frame and Fear Appeals, Transparency - Cancer Colorectal | Not applicable | Completed | Geisinger Clinic | 14644 | 2020-07-24 | 2021-09-24 |
| CMO Letter to Reduce Inappropriate Antibiotic Prescribing Winter 2019/2020 Letter - Prescribing, Off-Label | Not applicable | Completed | Public Health England | 2963 | 2019-08-31 | 2020-09-29 |
| Trial to Assess Implementation of New Research in a Primary Care Setting (TRAINS) Letter - General Practice (GP), Primary Care Settings | Not applicable | Completed | University of Sheffield | 1389 | 2019-08-01 | 2023-05-18 |
| Maine Lung Cancer Coalition: Using CHWs for the Annual Lung Cancer Screening Reminder Letter, Community Health Worker Phone Call - Lung Cancer | Not applicable | Completed | Anne Conners | 396 | 2019-07-16 | 2020-11-30 |
| Behavioral Science and Hepatitis C Screening Outreach Opt-Out, Letter, Behavioral Economic Messaging - Hepatitis C | Not applicable | Completed | University of Pennsylvania | 21493 | 2019-03-15 | 2020-12-01 |
| Herd Immunity and Influenza Vaccine Uptake Letter - Influenza, Human | Not applicable | Completed | Finnish Institute for Health and Welfare | 48125 | 2018-10-01 | 2025-08-20 |
| Comparing Methods of Recall for Cancer Screening in Primary Care: a Pragmatic Clinical Trial Letter, Phone call - Early Detection of Cancer, Cancer | Not applicable | Completed | Unity Health Toronto | 5270 | 2015-07-01 | 2016-10-17 |
| Targeted Letters to Reduce Avoidable Emergency Department Attendances Letter - Avoidable Emergency Department Attendances | Not applicable | Unknown | The Behavioural Insights Team | 25000 | 2015-01-01 | 2015-01-08 |
| The Effect of Pharmacist Intervention on the Use of Zostavax in a Community Pharmacy Setting Personalized letter, Flyer advertisement, Newspaper press release - Herpes Zoster | Not applicable | Completed | University of Tennessee | 205 | 2008-02-01 | 2009-04-23 |
Risk Reduction Behavior (3) · Behavior (2) · Communication (2) · Influenza, Human (2) · Breast Neoplasms (1) · Colonic Neoplasms (1) · Health Behavior (1) · Hepatitis C (1) · Herpes Zoster (1) · Lung Neoplasms (1) · Neoplasms (1)
Geisinger Clinic (3) · Anne Conners (1) · Finnish Institute for Health and Welfare (1) · Public Health England (1) · The Behavioural Insights Team (1) · Unity Health Toronto (1) · University of California, San Francisco (1) · University of Pennsylvania (1) · University of Sheffield (1) · University of Tennessee (1)
United States (7) · United Kingdom (2) · Canada (1) · Finland (1)
Amir Goren, PhD (2) · Aisha Lofters, MD PhD CCFP (1) · Christopher Chabris, PhD (1) · Cindy T Smith, Pharm.D. (1) · Cornelia Betsch, PhD (1) · Elizabeth Wick, MD (1) · Hanna Nohynek, PhD (1) · Hannah Behrendt, MPhil, BA (1) · Heini Salo, PhD (1) · Lindsay J Ford, Pharm.D. (1) · Nina H Jaber, Pharm.D. (1) · Richard Randolph, Pharm.D. (1)
PMID 34006604, PMID 35139082, PMID 36397087, PMID 37997062, PMID 40987739, PMID 41667505
1UG3AG081663-01 (1)