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Table 2 Power scenarios for the obstetric outcome

From: Trial protocol OPPTIMUM– Does progesterone prophylaxis for the prevention of preterm labour improve outcome?

fFN+

fFN-

Subjects (fFN+/ fFN-) [Total]

Power

25%

8%

375/750 (1125)

81%

  

400/800 (1200)

83%

  

425/850 (1275)

86%

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BMC Pregnancy and Childbirth

ISSN: 1471-2393

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