Associations of distance and level of delivery care with health facility delivery in rural Zambia.

n = 3,682 births; BEmOC(−1), basic emergency obstetric care that may lack assisted vaginal delivery; BEmOC−2 and −4, facilities lacking two or four of the BEmOC signal functions, respectively; CEmOC(−1), comprehensive emergency obstetric care that may lack assisted vaginal delivery. For details on the classification, see Methods.LRT, likelihood ratio test.