Standard Texts vs Standard Texts With Transportation Messaging: Number of Participants Vaccinated at the End of the Campaign Period
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
Measures 6
Calculated by ConductScience from the counts the trial posted to ClinicalTrials.gov.
| Measure | Value | 95% interval, lower | 95% interval, upper | Method | Note | Source |
|---|---|---|---|---|---|---|
| Risk in group 1 | 0.274 | 0.271 | 0.277 | wilson | ClinicalTrials.gov | |
| Risk in group 2 | 0.28 | 0.264 | 0.296 | wilson | ClinicalTrials.gov | |
| Risk difference, group 1 minus group 2 | -0.006 | -0.0224 | 0.00985 | newcombe hybrid score | ClinicalTrials.gov | |
| Risk ratio, group 1 over group 2 | 0.979 | 0.924 | 1.04 | log | ClinicalTrials.gov | |
| Odds ratio, group 1 over group 2 | 0.97 | 0.896 | 1.05 | log | ClinicalTrials.gov | |
| Number needed to treat, for one fewer participant with the outcome on Standard Texts than on Standard Texts With Transportation Messaging | 167 | from the risk difference interval | the interval includes no difference | ClinicalTrials.gov |
Groups 2
Neither group, or both, names a comparator, so the groups keep ClinicalTrials.gov's order.
| Group | Title | Description | With the outcome | Analysed | ClinicalTrials.gov code | Source |
|---|---|---|---|---|---|---|
| Group 1 | Standard Texts | Patients randomized to this study arm will receive a standard text reminding them about the importance of influenza vaccination. The standard texts will include a clinic call back number and patient portal self-scheduling for patients to schedule their influenza vaccines:~#FirstName#, your flu shot is ready! Call your clinic at #ExternalRefNo# or visit the LA Health Portal at http://bit.ly/BookFluShot if you want this shot held for you.~Text messaging: Patients will receive up to 3 text messages reminding them about the importance of influenza vaccination during the 2022-2023 flu season. | 33,357 | 121,743 | OG000 | ClinicalTrials.gov |
| Group 2 | Standard Texts With Transportation Messaging | Patients randomized to this study arm will receive standard texts plus transportation messaging including a phone number for patients to reserve transportation to a vaccination appointment based on MediCal health plan transportation resources:~#FirstName#, your flu shot is ready! Call your clinic at #ExternalRefNo# or visit the LA Health Portal at http://bit.ly/BookFluShot if you want this shot held for you. You can call #Health Plan Phone Number# to schedule a free ride for your flu shot through #HealthPlanName#.~Text messaging: Patients will receive up to 3 text messages reminding them about the importance of influenza vaccination during the 2022-2023 flu season. | 854 | 3,050 | OG001 | ClinicalTrials.gov |
Outcome 5
| Field | Value | Source |
|---|---|---|
| Type | PRIMARY | ClinicalTrials.gov |
| Title | Number of Participants Vaccinated at the End of the Campaign Period | ClinicalTrials.gov |
| Description | Number of Participants who received their influenza vaccination during the campaign period, as measured in the California Immunization Registry (CAIR2) to include vaccinations occurring both inside and outside the LADHS system. We assessed baseline vaccination status at the beginning of the flu season and excluded individuals who already received their vaccination. | ClinicalTrials.gov |
| Time frame | 6 months | ClinicalTrials.gov |
| Population | As not all randomized participants were eligible for the transportation messaging given their insurance did not cover healthcare transportation costs, these households were removed from both groups. | ClinicalTrials.gov |
Trial 8
| Field | Value | Source |
|---|---|---|
| Title | Precision Vaccine Promotion in Underserved Populations | ClinicalTrials.gov |
| NCT number | NCT05537441 | ClinicalTrials.gov |
| Phases | NA | ClinicalTrials.gov |
| Conditions | Influenza, Vaccine Hesitancy | ClinicalTrials.gov |
| Interventions | Text messaging | ClinicalTrials.gov |
| Lead sponsor | University of Southern California | ClinicalTrials.gov |
| Results first posted | 2024-10-01 | ClinicalTrials.gov |
| Results on ClinicalTrials.gov | https://clinicaltrials.gov/study/NCT05537441?tab=results | ClinicalTrials.gov |
Source 4
| Field | Value | Source |
|---|---|---|
| Release | trial-comparisons-2026-03-23-0.1.0 | ClinicalTrials.gov |
| Release manifest SHA-256 | f66225897fbf258b57ea10bdacfd0347d3cdfda93f7f5685234b7e06ea36fa57 | ClinicalTrials.gov |
| AACT copy | 2026-03-23 | ClinicalTrials.gov |
| Tables read | outcome_counts.parquet, outcome_measurements.parquet, outcomes.parquet, reported_event_totals.parquet, reported_events.parquet, result_groups.parquet, studies.parquet, ctgov_trial.parquet | ClinicalTrials.gov |
Release trial-comparisons-2026-03-23-0.1.0
ClinicalTrials.gov's posted results, through CTTI's AACT: ClinicalTrials.gov data via Aggregate Analysis of ClinicalTrials.gov (AACT), CTTI. CTTI makes its materials freely available and requests acknowledgement. https://aact.ctti-clinicaltrials.org/documentation/299 ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.
ClinicalTrials.gov: none stated ClinicalTrials.gov's data carry an international copyright outside the United States: https://clinicaltrials.gov/about-site/terms-conditions. The measures are ConductScience's calculation from them.