Suppose we believe the effect of prenatal visits is different for whites and blacks. Write down a new model incorporating this hypothesis. Clearly define any new variables required.

Answer: The influence of the number of prenatal visits, maternal age and education, parity level, and economic status of the birthing women on the place of delivery is found to vary across the three geographical regions.

Prenatal and delivery care are critical both for maternal and newborn health. Using the Demographic and Health Surveys (DHS) data for thirty-two low-income countries across Asia, sub-Saharan Africa and Latin America, and employing a two-level random-intercept model, this paper empirically assesses the influence of prenatal attendance and a wide array of observed individual-, household- and community-level characteristics on a woman's decision to give birth at a health facility or at home. The results show that prenatal attendance does appreciably influence the use of facility delivery in all three geographical regions, with women having four visits being 7.3 times more likely than those with no prenatal care to deliver at a health facility. These variations are more pronounced for Sub-Saharan Africa.