Main Findings
In this retrospective cohort pilot study, we demonstrated that patients
with sonographically absent CGA at the time of second-trimester CL
screening were more likely to spontaneously deliver preterm. CGA
assessment was readily reproducible, and the addition of this simple
qualitative factor to CL screening improved PTB prediction. Among
patients with visualizable CGA, quantitative measurements did not
exhibit the same predictive ability for PTB.