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| ID | Type | Description | Link |
|---|---|---|---|
| R01AI135029 | U.S. NIH Grant/Contract | View source |
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| Name | Class |
|---|---|
| National Institute of Allergy and Infectious Diseases (NIAID) | NIH |
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This trial is taking place in Los Angeles, CA among patients from primary care practices within the UCLA Health System.
The study design is a 2x2x2 factorial design, nested in a parallel 2-arm trial. The parallel arms are control v. reminder letter (reminder messages sent via the patient portal, reminding participants of an overdue influenza vaccine)
Nested within the reminder letter arm, we will have 3 additional components:
This trial is taking place in Los Angeles, CA among patients from primary care practices within the UCLA Health System, using 2x2x2 factorial design, nested in a parallel 2-arm trial.
Sub-optimal vaccination rates are a significant problem in the U.S., despite their effectiveness in preventing morbidity and mortality from vaccine-preventable illness. For influenza specifically, annual epidemics of influenza cause substantial morbidity in the U.S. with up to 40,00-80,000 deaths/year and many hospitalizations, emergency and outpatient visits, and significant costs.
Reminder/recall (R/R) messages, sent by phone, mail or other modality, can improve child and adult influenza vaccination rates. However, the majority of pediatric or adult primary care practices to not conduct R/R. Barriers are lack of finances, personnel, and algorithms to identify eligible patients.
A technological breakthrough that might overcome these barriers involves patient portals-- secure, web-based communication systems, embedded within electronic health records (EHRs), for patients and providers to communicate with each other via email and the internet. Portals are used by about half of Americans and half of UCLA patients.
This randomized controlled trial will assess the effectiveness of reminders messages, encouraging influenza vaccination, sent to patient portal users on increasing influenza vaccination rates within a health system by randomizing patients to two groups: 1) two-thirds of patients will receive reminder letters, 2) one-third will not receive reminders.
Patients in the reminder arm will be further randomized (separately) for three additional components: 1) direct appointment scheduling, 2) pre-commitment prompts and 3) pre-appointment reminders.
Direct scheduling: The convenience of scheduling an appointment for influenza vaccination may increase the likelihood that patients receive an influenza vaccination. Patients receiving reminders will be randomized to receive one of two types of reminder letters: 1) one half will receive flu vaccine reminder letters with a link to the MyChart direct appointment scheduling page and 2) one half will receive flu vaccine reminder message without the direct appointment scheduling link.
Pre-commitment: Another potential influence on the decision to vaccinate is pre-commitment. Previous studies suggest that, upon being prompted, indicating an intention to do something increases the likelihood of following through. Patients will be randomized to one of two groups: 1) one half will receive pre-commitment prompt at the beginning of influenza vaccination season and 2) one half will not receive a pre-commitment prompt. The pre-commitment prompt asks whether the patient intends to receive influenza vaccine, and where and when they plan to get the vaccine.
Pre-appointment flu reminders: Finally, a missed opportunities for vaccination occurs when patients are eligible for vaccination but are not offered a vaccine at their medical appointment. Pre-appointment reminders, sent in advance of an upcoming appointment, encouraging the patient talk to their doctor about influenza vaccination, may increase the likelihood of that patient receiving a vaccine. Patients will be randomized to one of two groups: 1) one half will receive modified pre-appointment reminders that mention influenza vaccination and 2) one half will receive the standard pre-appointment reminders for an upcoming appointment (no mention of influenza vaccination).
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Direct scheduling + Pre-commitment + Pre-appt reminder | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine |
|
| Direct scheduling + Pre-commitment | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) a pre-commitment prompt |
|
| Direct scheduling + Pre-appt reminder | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine |
|
| Direct scheduling | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling |
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Portal Reminders for Influenza Vaccination: Direct scheduling link | Behavioral | Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit |
| Measure | Description | Time Frame |
|---|---|---|
| Number of Index Patients Who Received Annual Influenza Vaccine | Receipt of the annual influenza vaccination (between 8/1/20 - 4/1/21) among index patients. Outcomes will be assessed via vaccine data extraction from the electronic health record and external claims and pharmacy data. The index patients must also be an active UCLA Health MyChart user (>= 1 login over the last 12 months from 8/1/20, excluding activity on the user's initial profile activation date). Individuals not affiliated with any primary care practice will be excluded from the primary analysis. | 6 months |
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Inclusion Criteria:
A patient within the UCLA Health System identified as a primary care patient per an internal algorithm.
Exclusion Criteria:
A patient within the UCLA Health System not identified as a primary care patient per an internal algorithm
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| Name | Affiliation | Role |
|---|---|---|
| Peter G Szilagyi, MD, MPH | Professor of Pediatrics | Principal Investigator |
| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| University of California LA | Los Angeles | California | 99095 | United States |
| PubMed Identifier | Type | Citation | Retractions |
|---|---|---|---|
| 36870572 | Derived | Szilagyi PG, Casillas A, Duru OK, Ong MK, Vangala S, Tseng CH, Albertin C, Humiston SG, Ross MK, Friedman SR, Evans S, Sloyan M, Bogard JE, Fox CR, Lerner C. Evaluation of behavioral economic strategies to raise influenza vaccination rates across a health system: Results from a randomized clinical trial. Prev Med. 2023 May;170:107474. doi: 10.1016/j.ypmed.2023.107474. Epub 2023 Mar 2. |
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| ID | Title | Description |
|---|---|---|
| FG000 | Direct Scheduling + Pre-commitment + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| Title | Milestones | Reasons Not Completed | |||||
|---|---|---|---|---|---|---|---|
| Overall Study |
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| Type | Includes Protocol | Includes SAP | Includes ICF | Document Label | Document Date | Document Uploaded Date | Document File Name |
|---|---|---|---|---|---|---|---|
| Prot | Yes | No | No | Study Protocol | Aug 14, 2020 | Aug 17, 2022 |
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A 2x2x2 factorial design, nested within a parallel 2-arm trial.
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| No direct scheduling + Pre-commitment + Pre-Appt reminder | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine |
|
| No direct scheduling + Pre-commitment | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) a pre-commitment prompt |
|
| No direct scheduling + Pre-appt reminder | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine |
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| No direct scheduling | Active Comparator | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling for a flu vaccine appointment |
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| Control Arm | No Intervention | Participants will not receive any reminder/recall messages regarding influenza vaccination via the patient portal or other intervention components |
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| Portal Reminders for Influenza Vaccination: No direct scheduling link | Behavioral | Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) |
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| Pre-Commitment Prompt | Behavioral | Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination |
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| Pre-Appointment flu vaccine reminders | Behavioral | Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
|
| FG001 | Direct Scheduling + Pre-commitment | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) a pre-commitment prompt Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination |
| FG002 | Direct Scheduling + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| FG003 | Direct Scheduling | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit |
| FG004 | No Direct Scheduling + Pre-commitment + Pre-Appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| FG005 | No Direct Scheduling + Pre-commitment | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) a pre-commitment prompt Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination |
| FG006 | No Direct Scheduling + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| FG007 | No Direct Scheduling | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling for a flu vaccine appointment Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) |
| FG008 | Control Arm | Participants will not receive any reminder/recall messages regarding influenza vaccination via the patient portal or other intervention components |
| COMPLETED |
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| NOT COMPLETED |
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| ID | Title | Description |
|---|---|---|
| BG000 | Direct Scheduling + Pre-commitment + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| BG001 | Direct Scheduling + Pre-commitment | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) a pre-commitment prompt Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination |
| BG002 | Direct Scheduling + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| BG003 | Direct Scheduling | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit |
| BG004 | No Direct Scheduling + Pre-commitment + Pre-Appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| BG005 | No Direct Scheduling + Pre-commitment | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) a pre-commitment prompt Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination |
| BG006 | No Direct Scheduling + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine |
| BG007 | No Direct Scheduling | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling for a flu vaccine appointment Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) |
| BG008 | Control Arm | Participants will not receive any reminder/recall messages regarding influenza vaccination via the patient portal or other intervention components |
| BG009 | Total | Total of all reporting groups |
| Units | Counts |
|---|---|
| Participants |
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| Title | Description | Population Description | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Denominator Units Selected | Denominators | Classes | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Age, Customized | Count of Participants | Participants |
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| Sex/Gender, Customized | Count of Participants | Participants |
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| Race/Ethnicity, Customized | Count of Participants | Participants |
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| Race/Ethnicity, Customized | Count of Participants | Participants |
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| Primary Language | Count of Participants | Participants |
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| Primary Insurance Class | Count of Participants | Participants |
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| Type | Title | Description | Population Description | Reporting Status | Anticipated Posting Date | Parameter Type | Dispersion Type | Unit of Measure | Calculate Percentage | Time Frame | Units Analyzed | Denominator Units Selected | Arm/Group Information | Denominators | Classes | Analyses | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| Primary | Number of Index Patients Who Received Annual Influenza Vaccine | Receipt of the annual influenza vaccination (between 8/1/20 - 4/1/21) among index patients. Outcomes will be assessed via vaccine data extraction from the electronic health record and external claims and pharmacy data. The index patients must also be an active UCLA Health MyChart user (>= 1 login over the last 12 months from 8/1/20, excluding activity on the user's initial profile activation date). Individuals not affiliated with any primary care practice will be excluded from the primary analysis. | Posted | Count of Participants | Participants | 6 months |
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We did not collect information regarding adverse events.
We did not collect adverse event information. We monitored whether reminder recall through the portal was effective at increased influenza vaccination rates. Because influenza vaccination is recommended by the Advisory Committee on Immunization Practices and is part of the U.S. recommended vaccine schedule, we did not collect adverse event data.
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| ID | Title | Description | Deaths (Affected) | Deaths (At Risk) | Serious Events (Affected) | Serious Events (At Risk) | Other Events (Affected) | Other Events (At Risk) |
|---|---|---|---|---|---|---|---|---|
| EG000 | Direct Scheduling + Pre-commitment + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine | 0 | 0 | 0 | 0 | 0 | 0 |
| EG001 | Direct Scheduling + Pre-commitment | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) a pre-commitment prompt Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination | 0 | 0 | 0 | 0 | 0 | 0 |
| EG002 | Direct Scheduling + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine | 0 | 0 | 0 | 0 | 0 | 0 |
| EG003 | Direct Scheduling | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal with a link enabling direct scheduling Portal Reminders for Influenza Vaccination: Direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination that include a direct scheduling link, enabling the patient to directly schedule a flu vaccination only visit | 0 | 0 | 0 | 0 | 0 | 0 |
| EG004 | No Direct Scheduling + Pre-commitment + Pre-Appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling, 2) a pre-commitment prompt and 3) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine | 0 | 0 | 0 | 0 | 0 | 0 |
| EG005 | No Direct Scheduling + Pre-commitment | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) a pre-commitment prompt Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Commitment Prompt: Patients receive a pre-commitment prompt asking about their intention to get an influenza vaccination | 0 | 0 | 0 | 0 | 0 | 0 |
| EG006 | No Direct Scheduling + Pre-appt Reminder | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling and 2) pre-appointment reminders that mention asking the provider for a flu vaccine Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) Pre-Appointment flu vaccine reminders: Patients receive modified pre-appointment reminders for upcoming scheduled appointments that include language encouraging patients to ask the provider for the flu vaccine | 0 | 0 | 0 | 0 | 0 | 0 |
| EG007 | No Direct Scheduling | Participants receive 1) reminder/recall messages regarding influenza vaccination via the patient portal without a link enabling direct scheduling for a flu vaccine appointment Portal Reminders for Influenza Vaccination: No direct scheduling link: Patients receive reminder/recall messages via the patient portal to get an influenza vaccination (no direct scheduling link included) | 0 | 0 | 0 | 0 | 0 | 0 |
| EG008 | Control Arm | Participants will not receive any reminder/recall messages regarding influenza vaccination via the patient portal or other intervention components | 0 | 0 | 0 | 0 | 0 | 0 |
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| Title | Organization | Phone | Extension | |
|---|---|---|---|---|
| Principal Investigator | UCLA | 310-206-6328 | pszilagyi@mednet.ucla.edu |
| Prot_000.pdf |
| SAP | No | Yes | No | Statistical Analysis Plan | Aug 14, 2020 | Aug 17, 2022 | SAP_001.pdf |
| ID | Term |
|---|---|
| D007251 | Influenza, Human |
| D012141 | Respiratory Tract Infections |
| ID | Term |
|---|---|
| D007239 | Infections |
| D009976 | Orthomyxoviridae Infections |
| D012327 | RNA Virus Infections |
| D014777 | Virus Diseases |
| D012140 | Respiratory Tract Diseases |
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| 18-64 years |
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| 65+ years |
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| Male |
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| Other |
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| Unknown |
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| Asian |
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| Black |
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| American Indian or Alaska Native |
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| Multiracial |
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| Other |
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| Unknown |
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| Hispanic or Latino |
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| Unknown |
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| Spanish |
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| Other |
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| Uknown |
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| UCLA Managed Care |
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| Medicare |
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| Medi-Cal |
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| Other |
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| Tricare |
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| Group Health Plan |
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| International Payor |
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| Self-pay |
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| Package Billing |
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| Unknown |
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Comparing the risk of receiving an influenza vaccination |
| Adjusted Risk Ratio |
| 1.00 |
| 2-Sided |
| 95 |
| 0.98 |
| 1.01 |
These results compare arms which received direct appointment scheduling to the arms not receiving direct appointment scheduling. |
| Superiority |
| Comparing the risk of receiving an influenza vaccination | Adjusted Risk Ratio | 1.00 | 2-Sided | 95 | 1.00 | 1.01 | These results compare arms which received pre-commitment reminders to the arms not receiving pre-commitment reminders. | Superiority |
| Comparing the risk of receiving an influenza vaccination | Adjusted Risk Ratio | 1.00 | 2-Sided | 95 | 0.99 | 1.01 | These results compare arms which received pre-appointment reminder to the arms not receiving pre-appointment reminder. | Superiority |