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. 2008 Oct 8;2008(4):CD006843. doi: 10.1002/14651858.CD006843.pub2
Methods Randomized controlled trial.
Participants 24‐34 6/7 week singletons/twins with 'symptoms of PTL'.
Number of participants: 114 (unclear from text) randomized [96 singleton, 12 twins] (analysed: 51/57: knowledge/no knowledge).
Interventions FFN knowledge or not.
Time FFN results available: 1‐2 hours.
Protocol for FFN knowledge group: no.
Outcomes Primary: transport rates (not reported).
Notes 6/114 (?) excluded post‐randomization: not intention to treat; 8 patients entered in study twice!; stopped trial prematurely; sponsored by Adeza; included twins; no protocol.
Positive FFN test in each group: 6 (12%) in knowledge, 6 (10.5%) in no knowledge group.
Risk of bias
Bias Authors' judgement Support for judgement
Allocation concealment? Low risk Computerized opaque envelopes.

FFN: fetal fibronectin PTL: preterm labor