Table 1.

Details of studies contributing data to IPD meta-analysis

	PI	Setting	N	Events	Dates	Inclusion	Primary outcome
Studies with data available
EQUIPP30 31	Professor AS	5 UK centres	452	14	2010–2012	22–35 weeks with symptoms of preterm labour	Delivery <34 weeks gestation
EUFIS*32	Professor BM	10 European hospitals	452	48	2012–2014	24–34 weeks with preterm contractions and intact membranes	Delivery within 7 days of test
APOSTEL I*33	van Baaren	10 Dutch hospitals	528	70	2009–2012	24–34 weeks with preterm contractions and intact membranes	Days to delivery truncated at 7 days
QFCAPS  (unpublished)	Dr AK	London teaching hospital	86	2	2012–2014	24–34 weeks with symptoms of preterm labour Singletons only	Delivery within 7 days of test
UCLH/Whit  (unpublished)	Dr ALD	2 UK centres	262	5	2009–2010	22–35 weeks with symptoms of preterm labour	Delivery within 7 days of test
	Total	5 studies	1783	139
Studies where data may be available in future
STOP study  (https://clinicaltrials.gov/ct2/show/NCT01868308)	Professor M Elovitz	USA teaching hospital	700	NK	2011–2015	22–34 weeks Symptomatic women with singleton pregnancy	Delivery before 37 weeks

*Study unpublished at time of search in April 2014; manuscript now published.

APOSTEL 1, Alleviation of Pregnancy Outcome by Suspending of Tocolysis in Early Labour; EQUIPP, Evaluation of Fetal Fibronectin with a novel bedside Quantitative Instrument for the Prediction of Preterm birth; EUFIS, European Fibronectin Study; IPD, individual participant data; NK, not known; PI, principal investigator; QFCAPS, Quantitative fetalfibronectin, Cervical length and ActimPartus for the prediction of Preterm birth in Symptomatic women; STOP, Screening to Obviate Preterm Birth; UCLH/WHIT, Univesity College London Hospital/Whittington Hospital Study.