Table 1: Demographic and clinical characteristics of the study
population
Data are n (%) or mean ±SD. Abbreviations: CGA (cervical gland area),
TVUS (transvaginal ultrasound), PTB (preterm birth), GA (gestational
age), CL (cervical length).
a Mixed and Unknown Race categories not shown.
b Prenatal Genitourinary Infection includes sexually
transmitted infections, bacterial vaginosis, urinary tract infections,
and chorioamnionitis. Prior Uterine Surgeries includes dilation and
curettage/evacuation, myomectomy, cesarean, and hysteroscopy. Prior
Cervical Excision includes loop electrocautery procedure and cold knife
cone. Progesterone Supplementation includes vaginal and/or intramuscular
routes. Short Cervix is defined as CL <2.5 cm.