Table 2.

Characteristics of Prenatal Visits to Office-Based Family Physicians and Obstetricians, 1995–2004 (N = 6,203)

Proportion of Visits, %
CharacteristicFamily Physician (n=481)Obstetrician (n=5,722)Pvalue
ICD-9-CM = International Classification of Diseases, 9th Revision, Clinical Modification.
a Data available only for 2003 and 2004.
b Primary diagnosis of supervision of high-risk pregnancy (ICD-9-CM code V23) or complications of pregnancy, childbirth, and the puerperium (ICD-9-CM codes 640–648, 652–556, 658, 658, 671, and 673).
Age, years47.031.2<.01
    Black/African American5.25.2.39
    Asian and other ethnicity17.614.5
Health insurance49.363.9<.01
Primary care physiciana15.512.9.21
High-risk diagnosisb17.67.8<.01
Concurrent diagnosis17.67.8<.01