Main Findings
In pregnant women with a short cervix in this study, variables
identified as predictors of PTB <37 weeks included overweight
or obesity, frequency of pregnancy (≥3 times), twin pregnancy, IVF-ET,
gestational age of at first diagnosis of short cervix
(1st short cervix), gestational age of at first
diagnosis of short cervix (1st short cervix), history
of PTB, and autoimmune disease. On the other hand, twin pregnancy,
gestational age of 1st short cervix, CL of
1st short cervix, history of PTB, and prepregnancy
hypertension were identified as predictors of PTB < 34 weeks.
Nomogram of PTB < 37 weeks and PTB < 34 weeks showed
good discrimination and agreement, thus can be used in obstetrics to
identify patient at risk of PTB, especially those first diagnosed with a
short cervix.