Physician Referrals During Prenatal Care.

Objective: Referrals are an important component of patient care, and have been increasing over time. During pregnancy, people have intensive contact with the healthcare system, but little is known about the involvement of different physicians for pregnant patients during this period. This study examines referral patterns during prenatal care visits.

Methods: Using the 2006-2015 National Ambulatory Medical Care Survey and national birth certificate data, we estimate the number of referrals per pregnancy from prenatal care visits with OB/GYN and family medicine physicians. We use multivariable regression analysis to compare the probability of receiving a referral during a prenatal visit for visits with family medicine and OB/GYN physicians, controlling for visit, patient, and physician characteristics. Analyses are weighted to make results nationally representative.

Results: 224,335,436 prenatal visits over 19,893,015 pregnancies were included; 60% of these visits were covered by private insurance. On average, 0.3 referrals are made per pregnancy (95% confidence interval [CI] 0.22, 0.38). A prenatal visit with an OB was 5.5% points less likely to result in a referral than a visit with a family medicine physician, controlling for other characteristics.

Conclusions: Referrals are relatively common in prenatal care, and are more commonly initiated by family medicine physicians than by OB/GYNs. Understanding the contribution of multiple clinicians to a pregnant person's health during the prenatal period and how coordination among clinicians impacts care receipt is an important next step. As healthcare becomes more specialized, better understanding care teams of individuals during the perinatal period is important for improving prenatal care.