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Original Research

Utilization of fetal fibronectin testing and pregnancy outcomes among women with symptoms of preterm labor

, , , , &
Pages 585-594 | Published online: 03 Oct 2017

Figures & data

Figure 1 Schematic of study design.

Abbreviations: dx, diagnosis; ELD, labor and delivery; PTL, preterm labor.
Figure 1 Schematic of study design.

Figure 2 Study cohort identification.

Abbreviations: ELD, labor and delivery; PTL, preterm labor.
Figure 2 Study cohort identification.

Table 1 Baseline characteristics of study cohort

Figure 3 Prenatal fFN by type of insurance.

Abbreviation: fFN, fetal fibronectin.
Figure 3 Prenatal fFN by type of insurance.

Figure 4 ELD triage status, timing of infant delivery and use of fFN testing.

Abbreviations: ELD, labor and delivery; fFN, fetal fibronectin.
Figure 4 ELD triage status, timing of infant delivery and use of fFN testing.

Table 2 Predictors of fetal fibronectin testing

Figure 5 Sensitivity analysis: fFN and TVUS testing and time to delivery among patients discharged from ELD (N=17,512).

Note: Sensitivity analysis: fFN and TVUS testing among patients discharged from ELD who delivered within 3 days (N=17,512).
Abbreviations: ELD, labor and delivery; fFN, fetal fibronectin; TVUS, transvaginal ultrasound.
Figure 5 Sensitivity analysis: fFN and TVUS testing and time to delivery among patients discharged from ELD (N=17,512).

Table S1 Diagnosis and DRG codes for preterm labor

Table S2 Diagnosis codes for exclusion criteria

Table S3 ICD-9 Diagnosis codes for comorbid conditions