Changes in adverse obstetrical and neonatal outcomes over time in American women with polycystic ovary syndrome: an 11-year study of a population database.

PURPOSE

To determine whether the prevalence in American demographic and resultant adverse obstetric outcomes changed in women with polycystic ovary syndrome between the years of 2004-2014 inclusively, based on data derived from the Healthcare Cost and Utilization Project Nationwide Inpatient Sample (HCUP-NIS) database.

METHODS

This is a retrospective population-based study using data derived from the HCUP-NIS database from the years of 2004-2014, inclusively. Within this group, all pregnancies to women with PCOS were identified and separated by year, creating 11 groups.

RESULTS

Risk factors including non-Caucasian race, lower socioeconomic status, and rates of obesity and thyroid disease increased over time. The rates of gestational diabetes mellitus demonstrated a slight decrease, (21.3% in 2004 to 18.0% in 2014, P = 0.01). The number of women with preterm premature rupture of membranes decreased from 3.0% in 2004 to 2.0% in 2014 (P = 0.04). Rates of preterm delivery decreased from 14.8% in 2004 to 9.8% in 2014 (P < 0.001). Rates of cesarean section decreased from 57.3% in 2004 to 45.7% in 2014 (P < 0.001), while rates of spontaneous vaginal delivery increased from 37.4% in 2004 to 50.1% in 2014 (P < 0.001). The rate of wound complications decreased from 2.1% in 2004 to 0.4% in 2014 (P < 0.001). However, the rate of congenital anomalies increased from 0.5% in 2004 to 1.2% in 2014 (P = 0.001).

CONCLUSIONS

In spite of increases in demographic risk factors associated with increased pregnancy complications, we hypothesize that the interventions made to minimize the risks of cesarean section and manage metabolic complications in women with PCOS during the period of study have resulted in improved pregnancy outcomes during the period of study.