Table 2. Clinical risk factors at 15 weeks, and ultrasound scan variables at 20 weeks in logistic regression model for SPTB-IM.
SPTB-IM | |||
OR | Lower95% | Upper95% | |
BMI <20 | 1.46 | 0.62 | 3.42 |
BMI 25–30 | 1.63 | 0.96 | 2.79 |
BMI >30 | 1.21 | 0.63 | 2.32 |
Caucasian ethnicity | 2.73 | 0.98 | 7.60 |
Marijuana pre-pregnancy | 2.34 | 1.22 | 4.52 |
Not feeling better than ever | 1.78 | 0.90 | 3.51 |
Having a history of >1 vaginal bleed | 2.33 | 1.08 | 5.04 |
Mother with diabetes type 1 or 2 | 2.19 | 0.99 | 4.86 |
Mother with a history of preeclampsia | 2.34 | 1.30 | 4.21 |
Strong family history of low birthweight babies | 5.64 | 1.79 | 17.80 |
Abnormal uterine artery Doppler20 wks | 2.18 | 1.20 | 3.94 |
Shortest transvaginal cervical lengthin mm | 1.05 | 1.01 | 1.08 |
Reference BMI 20–<25.