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

Summary

Tools to investigate dietary lutein and zeaxanthin (L/Z) intake and electronic device (ED) use are important to progress research that investigates the role of ED blue light (BL) exposure, and dietary L/Z intake on macular health. This project aims to validate two questionnaires developed by our research group: The L/Z FFQ, and the Electronic Device Use Questionnaire (EDUQ). The L/Z FFQ aims to investigate dietary intake of L/Z over the prior week or month. The EDUQ aims to investigate usual hours and behaviours surrounding ED use over the prior three months.

This aims of this project are to:

1. Validate a L/Z FFQ recalling over a weekly and monthly timeframe against multiple 24-hour diet recalls over four weeks.
2. Validate the EDUQ against multiple 24-hour ED use diaries over eight weeks. A cohort of 100 adults will be invited to participate to validate the FFQ and EDUQ. Participants will be offered to choose to participate in one or both the questionnaire validations (L/Z FFQ and EDUQ).

Conditions

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

Interventions

OTHER

Weekly Food Frequency Questionnaire

A purpose designed 91-item questionnaire to measure frequency of consumption of a selection of L/Z containing foods over the prior 7 days.

OTHER

Monthly Food Frequency Questionnaire

A purpose designed 95-item questionnaire completed at visit 1 to measure frequency of consumption of a selection of L/Z containing foods over the prior month.

OTHER

24-Hour Diet Recall

the diet recall via the online Automated Self-Administered 24-Hour Dietary Assessment Tool (ASA24®) takes approximately 25 minutes to complete, and investigates food and beverages consumed in the prior 24-hours.

OTHER

Electronic Device Use Questionnaire

1\. The EDUQ: A 22-item questionnaire that takes 20 minutes to complete, and measures participant demographic information (weight, height, age, highest level of education, occupational status, post-code and country of residence), usual daily ED use from present up to 20 years ago, occupational influence to use, and differences to ED use between a weekend and weekday.

OTHER

24-Hour Electronic Device Use Diary

Participants asked to record their electronic device use in hours and minutes over 24 hours.

Sponsors & Collaborators

• The University of Queensland

  lead OTHER

Eligibility

Sex

ALL

Healthy Volunteers

Yes

Timeline & Regulatory

Start

2020-08-18

Primary Completion

2022-10-01

Completion

2022-10-01

Countries

• Australia

Study Locations