Over the last few decades, health care services in the United States have become more geographically centralized. We study how the loss of hospital-based obstetric units in over 400 counties affect maternal and infant health via a difference-in-differences design. We find that closures lead...

Over the last few decades, health care services in the United States have become more centralized. We study how the loss of hospital-based obstetric units in over 400 rural counties affect maternal and infant health via a difference-in-differences design. We find that closures lead to...