Figure 1.

Regression of Obstetric Unit Closures by Annual Birth Volume in 2010 (N=263)

Note. Predicted probabilities were calculated by multivariate logistic regression in Table 3, with average values of covariates, including hospital system affiliation, hospital ownership, proportion of noncommercially insured mothers, FTE Registered Nurses per 1,000 inpatient days, birth volume in the nearest hospitals doing obstetrics, and country‐level characteristics