Center for Early Relational Health

COMBO Data

The COMBO study tracks mothers and children across multiple health domains. Below is a snapshot of what we measure, our enrollment totals, and the follow-up activities completed so far.

Enrollment Totals

  • Total dyads enrolled across COMBO and ESPI COMBO: 2,051
  • Dyads enrolled in COMBO: 1,588
  • Dyads enrolled prenatally: 682
  • Dyads enrolled postnatally: 774
  • Dyads enrolled in ESPI-COMBO: 463
    • Dyads enrolled from the University of Alabama-Birmingham: 87
    • Dyads enrolled from the University of Utah: 243
    • Dyads enrolled from CUIMC: 133

Surveys Completed

  • Prenatal: 665
  • Postnatal: 6,431

Follow-up Visits

  • 4-month video: 581
  • 6/9 month video (mother): 545
  • 6/9 month video (baby): 558
  • 12-month video: 16
  • 24-month video: 843
  • 36 months: 971
  • 48month: 390
  • QMR: 45
  • fMRI (mother+infant): 77
  • Mother interviews: 64
  • Socialization Goals: 85

Olfaction and Biospecimens

  • Smell test: 516
  • Maternal blood: 70
  • Cord blood: 61
  • Placenta: 75

Last updated: 06/02/2025