N/A
Completed N=228,831
Precision Vaccine Promotion in Underserved Populations
Source: ClinicalTrials.gov NCT05537441 ↗Enrolled (actual)
228,831
Serious AEs
0.0%
Results posted
Oct 2024
Primary outcomePrimary: Number of Participants Vaccinated at the End of the Campaign Period — 33357; 854 Participants — p=0.216
Summary
Previous studies have shown that low-cost, behavioral nudges through texting can increase influenza vaccination uptake compared to usual care. However, there are limited studies that evaluate the effect of decreasing barriers to scheduling, especially within safety net populations. The setting for this study, DHS, is the second largest public delivery system in the country and serves approximately half a million diverse patients that are eligible for vaccinations annually. This pilot study (one arm in a larger randomized controlled trial) will examine the effect of text messages highlighting MediCal health plan transportation resources (vs standard text messaging) on influenza vaccination rates in adults during the 2022-2023 flu season.
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Number of Participants Vaccinated at the End of the Campaign Period |
33357; 854 | 0.216 |
| SECONDARY Heterogeneity of Treatment Effects for Demographics |
44742; 1129; 77001; 1921 | 0.34 |
Eligibility Criteria
Inclusion Criteria
- Los Angeles County Department of Health Services (LACDHS) primary care patients over 6 months of age
Exclusion Criteria
- LACDHS patients less than 6 months of age
Data sourced from ClinicalTrials.gov (NCT05537441). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication. Informational only — not medical advice.