Selected publications

About The CROWN Initiative

The CROWN Initiative: journal editors invite researchers to develop core outcomes in women’s health
Khan KS (2014) BJOG; 121: 1181-1182

Core Outcomes for Clinical Trials: Moving Ahead
Rowe T (2013J Obstet Gynaecol Can; 35(10):877–878

Core Outcome Sets

Development of a core outcome set for epilepsy in pregnancy (E-CORE): a national multi-stakeholder modified Delphi consensus study
Al Wattar BH, Tamilselvan K, Khan KS et al. (2016) BJOG, doi: 10.1111/1471-0528.14430

A Core Outcome Set for Evaluation of Interventions to Prevent Preterm Birth (available also in Dutch and Chinese)
van ‘t Hooft J, Duffy JMN; Daly M, et al. on behalf of the Global Obstetrics Network (GONet)(2016Obstetrics & Gynecology, 127(1): 49–58

Standardizing Abortion Research Outcomes (STAR): a protocol for developing, disseminating, and implementing a core outcome set
for medical and surgical abortion

Whitehousea KC,  Kima CR, Ganatraa B, et al. (2017) Contraception, In Press

Protocol for developing, disseminating and implementing a core outcome set for endometriosis
Hirsch M, Duffy JMN, Barker C et al. On behalf of the International Collaboration to Harmonize Outcomes and Measures for Endometriosis (iHOME) (2016

A protocol for developing, disseminating and implementing a core outcome set for pre-eclampsia.
Duffy JMN, van’t Hooft J, Gale C, et al. (2016Pregnancy Hypertens; doi:

Evaluating Maternity Care: A Core Set of Outcome Measures
Devane D, Begley CM, Clarke M, et al. (2007) Birth 34(2): 164–172

Variation in outcome reporting in Women’s Health Research

No common denominator: a review of outcome measures in IVF RCTs
Wilkinson J, Roberts SA, Showell M, et al. (2016) Hum. Reprod. doi: 10.1093/humrep/dew227

Choice of primary outcomes evaluating treatment for heavy menstrual bleeding: a systematic review
Herman MC, Penninx JPM, Geomini PM, et al. (2016) BJOG, doi: 10.1111/1471-0528.14054

Variation in outcome reporting in endometriosis trials: a systematic review.
Hirsch M, Duffy JMN, Kusznir JO, et al. (2016) AJOG, 214(4): 452-464

Completeness of main outcomes across randomized trials in entire discipline: survey of chronic lung disease outcomes in preterm infants
Ioannidis JPA, Horbar JD, Ovelman CM et al. (2015BMJ doi:

Variation in the reporting of outcomes among pregnant women with epilepsy: a systematic review.
Al Wattar BH, Placzek A, Troko J, et al. (2015) Eur J Obstet Gynecol Reprod Biol. 195:193-9.

Diabetes in pregnancy outcomes: A systematic review and proposed codification of definitions
Feig DS, Corcoy R, Jensen DM, et al. (2015) Diabetes/Metabolism Research and Reviews, 31(7): 680–690

How are neonatal and maternal outcomes reported in randomised controlled trials (RCTs) in reproductive medicine? 
Braakhekke M, Kamphuis EI, Van Rumste MM, et al. (2014) Hum Reprod; 29:1211–1217

Choice of primary outcomes in randomised trials and systematic reviews evaluating interventions for preterm birth prevention: a systematic review
Meher S and Alfirevic Z (2014) BJOG, 121: 1188-1196

Variations in the reporting of outcomes used in systematic reviews of treatment effectiveness research in bladder pain syndrome
Tirlapur SA,  Ni Riordain R and Khan KS (2014) EJOG, 180: 61–67

Incomplete and inconsistent reporting of maternal and fetal outcomes in infertility treatment trials.
Dapuzzo L, Seitz FE, Dodson WC, et al. (2011) Fertil Steril, 95:2527–2530.

Systematic review highlights difficulty interpreting diverse clinical outcomes in abnormal uterine bleeding trials
Rahn DD, Abed H, Sung VW et al. (2011J Clin Epidemiol, 64(3): 293–300

Core Outcome Set – methods and commentaries

Reducing research waste in benign gynaecology and fertility research
Duffy JMN, Bhattacharya S, Herman M et al. on behalf of the Cochrane Gynaecology and Fertility Group BJOG 2017;124:366–369.

Core Outcome Set–STAndards for Reporting: The COS-STAR Statement
Kirkham JJ, Gorst S, Altman DG et al. (2016) PLoS Med 13(10): e1002148. doi:10.1371/journal.pmed.1002148

Influence of methodology upon the identification of potential core outcomes. Recommendations for core outcome set developers are needed
Duffy JMN, McManus RJ. (2016) BJOG, doi: 10.1111/1471-0528.14219

Developing core outcome sets for clinical trials: issues to consider
Williamson P, Altman D, Blazeby J, et al. (2012) Trials, 13:132.

Delphi Technique to Determine Which Outcomes to Measure in Clinical Trials: Recommendations for the Future Based on a Systematic Review of Existing Studies
Sinha I, Rosalind S and Williamson P (2011) PLoS Med, 8(1): e1000393. doi: 10.1371/journal.pmed.1000393

The COMET (Core Outcome Measures in Effectiveness Trials) Initiative
Williamson P , Altman D, Blazeby J et al. (2011) Trials, 12 (Suppl 1):A70.

For more guidance and information on the methodology of developing core outcome set go here.

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