Figure 4. Absolute risk reduction of delivery before 34 weeks and before 32 weeks
[D] Select for Text Description.
PTD = preterm delivery.
*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. Odendaal et al.50 included 2 target populations; high-risk and low-risk groups are 2 separate groups.
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