HMC Supplement Progress Report – I-5-A-DAY

February 2006

Supplement Title:                 I-5-A-Day Collaboration Project

Supplement Chair/
Affiliation:                             Diane Elliot, MD - Oregon Health & Science University

Purpose:                               The main goal of the I-5-a-Day Collaborative Project is to apply statistical techniques to define the                                              common patterns, mediators and theoretical mechanisms of long-term maintenance of healthy                                              dietary behaviors.  These issues will be examined as part of a collaborative project of three studies                                              that involve longitudinal (50 to 84 months) follow-up of participants from controlled intervention trials                                              that successfully increased F&V intake.

I-5-A-Day
Sharepoint Group:                Sharepoint Contact – Wendy McGinnis
(In addition to HMCRC Members)

Progress to Date:  We have established a schedule of monthly phone calls, and the primary site has visited the other two sites to review the study methods and meet with study personnel.

Study instruments and codebooks have been collected and reviewed. Where feasible, outcome data have been harmonized and additional questions added to achieve similar measures. The three sites’ assessments have been compared to identify common measures in the domains of demographics, tobacco use, physical activity, exercise support, exercise self-efficacy, diet support,
diet self-efficacy, depression, worksite cohesion, general health, physical measures and fruits and vegetable intake/stage of
change.

We are at a place to ask sites for specific variables, recode as needed, and generate a combined database. Next steps are assessment of variables/constructs’ psychometric properties and initial site specific and combined cross-sectional mediation analyses.

Challenges to Date:  Each site has unique features and used different instruments; identifying the commonalities across sites is a challenge. 

Next Steps:  Combining data and conducting cross sectional, individual and combined mediation analysis, and then proceeding with longitudinal analyses.