# Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- RCT 2

> **NCT04110314** · NA · COMPLETED · sponsor: **University of California, Los Angeles** · enrollment: 430636 (actual)

## Conditions studied

- Influenza
- Respiratory Tract Infections

## Interventions

- **BEHAVIORAL:** Portal Reminders for Influenza Vaccination: Gain-framed
- **BEHAVIORAL:** Portal Reminders for Influenza Vaccination: Loss-framed
- **BEHAVIORAL:** Pre-commitment prompt

## Key facts

- **NCT ID:** NCT04110314
- **Lead sponsor:** University of California, Los Angeles
- **Sponsor class:** OTHER
- **Phase:** NA
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2019-10-18
- **Primary completion:** 2020-04-01
- **Final completion:** 2020-04-01
- **Target enrollment:** 430636 (ACTUAL)
- **Last updated:** 2022-05-05


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04110314

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04110314, "Patient Portal Reminder/Recall for Influenza Vaccination in a Health System- RCT 2". Retrieved via AI Analytics 2026-05-27 from https://api.ai-analytics.org/clinical/NCT04110314. Licensed CC0.

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