A prospective study of antepartum anxiety screening in patients with and without a history of spontaneous preterm birth.

Background: Maternal stress has been identified as one of the most common clinical phenotypes associated with preterm birth. The American College of Obstetricians and Gynecologists recommends anxiety screening at least once in the perinatal period. The prevalence of perinatal anxiety is challenged by the absence of formalized screening protocols and underreporting in high-risk populations, such as those with a history of adverse pregnancy outcomes.

Objective: This study administered a validated anxiety screening tool in a cohort of patients with and without a previous spontaneous preterm birth and compared differences in score and rate of a positive screen between groups. Moreover, this study evaluated perinatal outcomes associated with a positive screen and described a referral protocol involving evaluation by a perinatal mental health counselor and clinical diagnoses. A hypothesis was made that patients with a previous history of spontaneous preterm birth would have higher self-reported anxiety symptoms than controls and that those with recurrent preterm delivery at <35 weeks of gestation would have the highest anxiety screening scores.

Study Design: This was a prospective observational cohort study administering the Generalized Anxiety Disorder 7-item screen to patients enrolled in 2 prenatal care clinics at our institution. The preterm birth cohort consisted of patients with a history of spontaneous preterm labor, premature rupture of membranes, or cervical insufficiency compared with the control cohort without this history. Screening was initiated at entry to prenatal care or referral to our high-risk obstetrical clinic. The inclusion criteria included English- or Spanish-speaking patients and singleton pregnancy, and the exclusion criteria included pregnancies complicated by a major congenital anomaly, enrollment after 34 weeks of gestation, delivery at <20 weeks of gestation, and incomplete delivery data. Referral to a mental health counselor was offered to those with a Generalized Anxiety Disorder 7-item screen score of ≥10. Perinatal outcomes as a comparison between the Generalized Anxiety Disorder 7-item screen-positive group and Generalized Anxiety Disorder 7-item screen-negative group were performed with statistical methods, including the Student test, chi-square test, and Wilcoxon rank-sum test, with a value of <.05 to determine significance.

Results: Between September 2020 and December 2021, 1349 participants were analyzed, with 143 patients (11%) in the previous preterm birth cohort and 1206 (89%) patients in the control cohort. Patients with a history of preterm birth and subsequent delivery at ≤35 weeks of gestation in the study pregnancy had significantly higher Generalized Anxiety Disorder 7-item screen scores than controls with delivery after 35 weeks of gestation (median score: 4 [interquartile range, 1-9] vs 2 [interquartile range, 0-6], respectively; =.006). Overall, 187 participants (14%) screened positive with significantly higher rates in the previous preterm birth group than in the control group (20% vs 13%; =.036). Of note, 117 patients (63%) accepted a referral, and 32 patients (17%) with a positive screen were diagnosed with a perinatal mood disorder.

Conclusion: Patients with recurrent preterm birth have higher self-reported anxiety using the Generalized Anxiety Disorder 7-item screen than controls. Of those with a positive screen, 17% were diagnosed with a perinatal mood disorder.