Table 1.

Assumptions About Prenatal Care Use Used in the Analysis

Care Begun (mo)	Prenatal Care Services Used
Month 1–4	Prenatal visit once a month until 7th month; then 2 visits per month for months 7 and 8 and 4 visits during month 9 Two screening ultrasounds Maternal screening for neural tube defects and Down syndrome Screening for gestational diabetes Screening for group B streptococcus
Month 5–6	Prenatal visit once a month until 7th month; then 2 visits per month for months 7 and 8 and 4 visits during month 9 One screening ultrasound Screening for gestational diabetes Screening for group B streptococcus
Month 7–9	2 prenatal visits per month for months 7 and 8 and 4 visits during month 9 One screening ultrasound Screening for group B streptococcus
No care	No prenatal care or screening tests