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Jampa, Alekhya, Kevin L Moss, Kathleen M Flannery, Cathy Proctor, Paul Winchester, Joanne K Daggy, Patrick O Monahan, and David M. Haas. 2024. “A Latent Class Analysis of Dietary Intake in a Midwestern United States Pregnancy Cohort.” North American Proceedings in Gynecology & Obstetrics, May. https://doi.org/10.54053/001c.117382.
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  • Figure 1. CONSORT flow diagram of Heartland Study participants for analysis
  • Figure 2. Heat map of latent class membership and food prevalence

Abstract

Objective

To use dietary self-reported data in a United States Midwest pregnancy cohort to characterize patterns of food consumption in pregnancy.

Methods

Using a Midwest US pregnancy cohort, a self-reported food questionnaire completed in pregnancy characterized food consumed within the last week. The 89 different foods in 14 categories were analyzed, as well as the percentage of each food that was consumed that was organic. Using a latent class analysis, individuals were assigned to classes based on healthy and organic food reported. Sociodemographic characteristics were compared between the classes.

Results

The 359 participants completing surveys were placed into 3 classes: I (healthy diet, higher organic, 23.4%)), II (healthy diet, lower organic, 42.6%), and III (less healthy diet, 34.0%). Individuals in each class demonstrated significant differences in multiple demographic and socioeconomic characteristics including race, age, marital status, educational attainment, income, smoking, and alcohol consumption.

Conclusion

A latent class analysis of self-reported dietary consumption yielded 3 classes that can be utilized in analyses of herbicide concentrations and adverse pregnancy outcomes. They may also serve as a screening aid in helping providers with dietary recommendations or interventions to optimize pregnancy outcomes.

Accepted: April 23, 2024 EDT