# Online Validation of Dietary Intake Food Frequency Questionnaire Over Four Weeks, and Electronic Device Use Questionnaire Over Eight Weeks.

> **NCT04779411** · — · COMPLETED · sponsor: **The University of Queensland** · enrollment: 183 (actual)

## Conditions studied

- Lutein and Zeaxanthin Dietary Intake
- Age Related Macular Degeneration
- Blue Light Exposure
- Electronic Device Use

## Interventions

- **OTHER:** Weekly Food Frequency Questionnaire
- **OTHER:** Monthly Food Frequency Questionnaire
- **OTHER:** 24-Hour Diet Recall
- **OTHER:** Electronic Device Use Questionnaire
- **OTHER:** 24-Hour Electronic Device Use Diary

## Key facts

- **NCT ID:** NCT04779411
- **Lead sponsor:** The University of Queensland
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2020-08-18
- **Primary completion:** 2022-10-01
- **Final completion:** 2022-10-01
- **Target enrollment:** 183 (ACTUAL)
- **Last updated:** 2023-05-22


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04779411

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04779411, "Online Validation of Dietary Intake Food Frequency Questionnaire Over Four Weeks, and Electronic Device Use Questionnaire Over Eight Weeks.". Retrieved via MORVS 2026-10-05 from https://api.morvs.ai/clinical/NCT04779411. Licensed CC0.

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