Ann Intern Med -- Nygren et al. 148 (3): 220 Figure 5

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Figure 5. Absolute risk reduction of low birthweight and preterm, premature rupture of membranes (PPROM).

*McDonald et al. (58) and Carey et al. (57) performed a high-risk group subanalysis; high-risk group is included in total study population of the average-risk target group.