References
1. Brunton G, Webbe J, Oliver S, Gale C. Adding value to core outcome set development using multimethod systematic reviews. Research Synthesis Methods. 2020;11(2):248-59.
2. Clarke M. Standardising outcomes for clinical trials and systematic reviews. Trials. 2007;8:39.
3. Duffy J, Hirsch M, Kawsar A, Gale C, Pealing L, Plana MN, et al. Outcome reporting across randomised controlled trials evaluating therapeutic interventions for pre-eclampsia. BJOG. 2017;124(12):1829-39.
4. Boers M, Beaton DE, Shea BJ, Maxwell LJ, Bartlett SJ, Bingham CO, et al. OMERACT Filter 2.1: Elaboration of the Conceptual Framework for Outcome Measurement in Health Intervention Studies. The Journal of Rheumatology. 2019;46(8):1021.
5. Chevance A, Tran V-T, Ravaud P. Improving the generalizability and credibility of core outcome sets (COSs) by a large and international participation of diverse stakeholders. Journal of Clinical Epidemiology. 2020.
6. Wuytack F, Smith V, Clarke M, Williamson P, Gargon E. Towards core outcome set (COS) development: a follow-up descriptive survey of outcomes in Cochrane reviews. Syst Rev. 2015;4:73.
7. Williamson PR, Altman DG, Bagley H, Barnes KL, Blazeby JM, Brookes ST, et al. The COMET Handbook: version 1.0. Trials. 2017;18(3):280.
8. Core Outcome Measures in Effectiness Trials initiative [Internet]. Available from: http://www.comet-initiative.org.
9. Gargon E, Gurung B, Medley N, Altman DG, Blazeby JM, Clarke M, et al. Choosing important health outcomes for comparative effectiveness research: a systematic review. PLoS One. 2014;9(6):e99111.
10. Gorst SL, Gargon E, Clarke M, Blazeby JM, Altman DG, Williamson PR. Choosing Important Health Outcomes for Comparative Effectiveness Research: An Updated Review and User Survey. PLoS One. 2016;11(1):e0146444.
11. Duffy J, Rolph R, Gale C, Hirsch M, Khan KS, Ziebland S, et al. Core outcome sets in women’s and newborn health: a systematic review. BJOG. 2017;124(10):1481-9.
12. Core Outcomes in Womens and Newborn Health. CROWN initiative [Available from: http://www.crown-initiative.org.
13. Kirkham JJ, Gorst S, Altman DG, Blazeby JM, Clarke M, Tunis S, et al. Core Outcome Set-STAndardised Protocol Items: the COS-STAP Statement. Trials. 2019;20(1):116.
14. Kirkham JJ, Davis K, Altman DG, Blazeby JM, Clarke M, Tunis S, et al. Core Outcome Set-STAndards for Development: The COS-STAD recommendations. PLoS Med. 2017;14(11):e1002447.
15. Kirkham JJ, Gorst S, Altman DG, Blazeby JM, Clarke M, Devane D, et al. Core Outcome Set-STAndards for Reporting: The COS-STAR Statement. PLoS Med. 2016;13(10):e1002148.
16. Liberati A, Altman DG, Tetzlaff J, Mulrow C, Gotzsche PC, Ioannidis JP, et al. The PRISMA statement for reporting systematic reviews and meta-analyses of studies that evaluate healthcare interventions: explanation and elaboration. BMJ. 2009;339:b2700.
17. Duffy JMN, Hirsch M, Vercoe M, Abbott J, Barker C, Collura B, et al. A core outcome set for future endometriosis research: an international consensus development study. BJOG: An International Journal of Obstetrics & Gynaecology. 2020;n/a(n/a).
18. Egan AM, Bogdanet D, Griffin TP, Kgosidialwa O, Cervar-Zivkovic M, Dempsey E, et al. A core outcome set for studies of gestational diabetes mellitus prevention and treatment. Diabetologia. 2020;63(6):1120-7.
19. Allin BSR, Hall NJ, Ross AR, Marven SS, Kurinczuk JJ, Knight M, et al. Development of a gastroschisis core outcome set. Arch Dis Child Fetal Neonatal Ed. 2019;104(1):F76-F82.
20. Agha RA, Pidgeon TE, Borrelli MR, Dowlut N, Orkar TK, Ahmed M, et al. Validated Outcomes in the Grafting of Autologous Fat to the Breast: The VOGUE Study. Development of a Core Outcome Set for Research and Audit. Plast Reconstr Surg. 2018;141(5):633e-8e.
21. Hirsch M, Duffy JM, Barker C, Hummelshoj L, Johnson NP, Mol B, et al. Protocol for developing, disseminating and implementing a core outcome set for endometriosis. BMJ Open. 2016;6(12):e013998.
22. Duffy JMN, Bhattacharya S, Curtis C, Evers JLH, Farquharson RG, Franik S, et al. A protocol developing, disseminating and implementing a core outcome set for infertility. Human Reproduction Open. 2018;2018(3).
23. Whitehouse KC, Kim CR, Ganatra B, Duffy JMN, Blum J, Brahmi D, et al. Standardizing abortion research outcomes (STAR): a protocol for developing, disseminating and implementing a core outcome set for medical and surgical abortion. Contraception. 2017;95(5):437-41.
24. Egan AM, Smith V, Devane D, Dunne FP. Effectiveness of prepregnancy care for women with pregestational diabetes mellitus: protocol for a systematic review of the literature and identification of a core outcomes set using a Delphi survey. Trials. 2015;16(1):356.
25. Smith P, Cooper N, Dhillon-Smith R, O’Toole E, Clark TJ, Coomarasamy A. Core Outcome Sets in Miscarriage Trials (COSMisT) study: a study protocol. BMJ Open. 2017;7(11):e018535.
26. Dadouch R, Faheim M, Juando-Prats C, Parsons J, D’Souza R, Investigators C. Development of a Core Outcome Set for Studies on Obesity in Pregnant Patients (COSSOPP): a study protocol. Trials. 2018;19(1):655.
27. Egan AM, Dunne FP, Biesty LM, Bogdanet D, Crowther C, Dempsey E, et al. Gestational diabetes prevention and treatment: a protocol for developing core outcome sets. BMJ Open. 2019;9(11):e030574.
28. Duffy JM, van ’t Hooft J, Gale C, Brown M, Grobman W, Fitzpatrick R, et al. A protocol for developing, disseminating, and implementing a core outcome set for pre-eclampsia. Pregnancy Hypertens. 2016;6(4):274-8.
29. Healy P, Gordijn S, Ganzevoort W, Beune I, Baschat A, Khalil A, et al. Core Outcome Set for GROwth restriction: deVeloping Endpoints (COSGROVE). Trials. 2018;19(1):451.
30. Prins JR, Holvast F, van ’t Hooft J, Bos AF, Ganzevoort JW, Scherjon SA, et al. Development of a core outcome set for immunomodulation in pregnancy (COSIMPREG): a protocol for a systematic review and Delphi study. BMJ Open. 2018;8(8):e021619.
31. Viau-Lapointe J, D’Souza R, Rose L, Lapinsky SE. Development of a Core Outcome Set for research on critically ill obstetric patients: A study protocol. Obstet Med. 2018;11(3):132-6.
32. Khalil A, Perry H, Duffy J, Reed K, Baschat A, Deprest J, et al. Twin-Twin Transfusion Syndrome: study protocol for developing, disseminating, and implementing a core outcome set. Trials. 2017;18(1):325.
33. Khalil A, Duffy JMN, Perry H, Ganzevoort W, Reed K, Baschat AA, et al. Study protocol: developing, disseminating, and implementing a core outcome set for selective fetal growth restriction in monochorionic twin pregnancies. Trials. 2019;20(1):35.
34. Smith V, Daly D, Lundgren I, Eri T, Begley C, Gross MM, et al. Protocol for the development of a salutogenic intrapartum core outcome set (SIPCOS). BMC Med Res Methodol. 2017;17(1):61.
35. Nielsen K, Nielsen KK, O’Reilly S, Wu N, Dasgupta K, Maindal HT. K, et al. Development of a core outcome set for diabetes after pregnancy prevention interventions (COS-DAP): a study protocol. Trials. 2018;19(1):708.
36. Bogdanet D, Egan A, Fhelelboom N, Biesty L, Thangaratinam S, Dempsey E, et al. Metabolic follow-up at one year and beyond of women with gestational diabetes treated with insulin and/or oral hypoglycaemic agents: study protocol for the identification of a core outcomes set using a Delphi survey. Trials. 2019;20(1):9.
37. Webbe J, Brunton G, Ali S, Duffy JM, Modi N, Gale C. Developing, implementing and disseminating a core outcome set for neonatal medicine. BMJ Paediatr Open. 2017;1(1):e000048.
38. Knol M, Wang H, Bloomfield F, Piet T, Damhuis S, Khalil A, et al. Development of a Core Outcome Set and Minimum Reporting Set for intervention studies in growth restriction in the NEwbOrN (COSNEON): study protocol for a Delphi study. Trials. 2019;20(1):511.
39. Allin B, Bradnock T, Kenny S, Walker G, Knight M. NETS(1HD): study protocol for development of a core outcome set for use in determining the overall success of Hirschsprung’s disease treatment. Trials. 2016;17(1):577.
40. Allin B, Ross A, Marven S, N JH, Knight M. Development of a core outcome set for use in determining the overall success of gastroschisis treatment. Trials. 2016;17:360.
41. Oei W, Fledderus AC, Korfage I, Eggen CA, van der Horst CM, Spuls PI, et al. Protocol for the development of core set of domains of the core outcome set for patients with Congenital Melanocytic Nevi (OCOMEN project). Journal of the European Academy of Dermatology and Venereology. 2019.
42. Kelly LE, Jansson LM, Moulsdale W, Pereira J, Simpson S, Guttman A, et al. A core outcome set for neonatal abstinence syndrome: study protocol for a systematic review, parent interviews and a Delphi survey. Trials. 2016;17(1):536.
43. Rada M-P, Pergialiotis V, Betschart C, Falconi G, Haddad JM, Doumouchtsis SK. A protocol for developing, disseminating, and implementing a core outcome set for stress urinary incontinence. Medicine. 2019;98(37):e16876.
44. Agha RA, Fowler AJ, Pidgeon TE, Wellstead G, Orgill DP, Group VS. Protocol for the development of a core outcome set for autologous fat grafting to the breast. Int J Surg. 2016;31:104-6.
45. Hirsch M, Duffy JMN, Kusznir JO, Davis CJ, Plana MN, Khan KS, et al. Variation in outcome reporting in endometriosis trials: a systematic review. Am J Obstet Gynecol. 2016;214(4):452-64.
46. Tirlapur SA, Ni Riordain R, Khan KS, Collaboration E-C. Variations in the reporting of outcomes used in systematic reviews of treatment effectiveness research in bladder pain syndrome. Eur J Obstet Gynecol Reprod Biol. 2014;180:61-7.
47. Herman MC, Penninx J, Geomini PM, Mol BW, Bongers MY. Choice of primary outcomes evaluating treatment for heavy menstrual bleeding. BJOG. 2016;123(10):1593-8.
48. Sadownik LA, Yong PJ, Smith KB. Systematic Review of Treatment Outcome Measures for Vulvodynia. J Low Genit Tract Dis. 2018;22(3):251-9.
49. Rahn DD, Abed H, Sung VW, Matteson KA, Rogers RG, Morrill MY, et al. Systematic review highlights difficulty interpreting diverse clinical outcomes in abnormal uterine bleeding trials. J Clin Epidemiol. 2011;64(3):293-300.
50. Wilkinson J, Roberts SA, Showell M, Brison DR, Vail A. No common denominator: a review of outcome measures in IVF RCTs. Hum Reprod. 2016;31(12):2714-22.
51. Braakhekke M, Kamphuis EI, van Rumste MM, Mol F, van der Veen F, Mol BW. How are neonatal and maternal outcomes reported in randomised controlled trials (RCTs) in reproductive medicine? Hum Reprod. 2014;29(6):1211-7.
52. Dapuzzo L, Seitz FE, Dodson WC, Stetter C, Kunselman AR, Legro RS. Incomplete and inconsistent reporting of maternal and fetal outcomes in infertility treatment trials. Fertil Steril. 2011;95(8):2527-30.
53. Smith PP, Dhillon-Smith RK, O’Toole E, Cooper NAM, Coomarasamy A, Clark TJ. Outcomes in prevention and management of miscarriage trials: a systematic review. BJOG: An International Journal of Obstetrics & Gynaecology. 2019;126(2):176-89.
54. Koot MH, Boelig RC, Van’t Hooft J, Limpens J, Roseboom TJ, Painter RC, et al. Variation in hyperemesis gravidarum definition and outcome reporting in randomised clinical trials: a systematic review. BJOG. 2018;125(12):1514-21.
55. Malinowski AK, D’Souza R, Khan KS, Shehata N, Malinowski M, Daru J. Reported Outcomes in Perinatal Iron Deficiency Anemia Trials: A Systematic Review. Gynecol Obstet Invest. 2019;84(5):417-34.
56. Al Wattar B, Placzek A, Troko J, Pirie A, Khan K, McCorry D, et al. Variation in the reporting of outcomes among pregnant women with epilepsy: a systematic review. European Journal of Obstetrics & Gynecology and Reproductive Biology. 2015;195:193-9.
57. Duffy J, Hirsch M, Pealing L, Showell M, Khan KS, Ziebland S, et al. Inadequate safety reporting in pre-eclampsia trials: a systematic evaluation. BJOG. 2018;125(7):795-803.
58. Townsend R, Sileo F, Stocker L, Kumbay H, Healy P, Gordijn S, et al. Variation in outcome reporting in randomized controlled trials of interventions for prevention and treatment of fetal growth restriction. Ultrasound Obstet Gynecol. 2019;53(5):598-608.
59. Meher S, Alfirevic Z. Choice of primary outcomes in randomised trials and systematic reviews evaluating interventions for preterm birth prevention: a systematic review. BJOG. 2014;121(10):1188-94; discussion 95-6.
60. Rogozińska E MN, Yang F, Dodd JM, Guelfi K, Teede H, Surita F, Jensen DM, Geiker NR, Astrup A, Yeo S. . Variations in reporting of outcomes in randomized trials on diet and physical activity in pregnancy: A systematic review. . Journal of Obstetrics and Gynaecology Research. 2017;43(7):1101-10.
61. Perry H, Duffy JMN, Umadia O, Khalil A, the International Collaboration to Harmonise Outcomes for Twin–Twin Transfusion S. Outcome reporting across randomized trials and observational studies evaluating treatments for twin–twin transfusion syndrome: systematic review. Ultrasound in Obstetrics & Gynecology. 2018;52(5):577-85.
62. Smith V, Daly D, Lundgren I, Eri T, Bensteom C, Devane D. Salutogenically-focused outcomes in systematic reviews of intrapartum interventions: a systematic review of systematic reviews. Midwifery. 2014;30:151-6.
63. Begley CM, Gross MM, Dencker A, Benstoem C, Berg M, Devane D. Outcome measures in studies on the use of oxytocin for the treatment of delay in labour: a systematic review. Midwifery. 2014;30(9):975-82.
64. O’Reilly SL, Leonard Y, Dasgupta K, Terkildsen Maindal H. Diabetes after pregnancy prevention trials: Systematic review for core outcome set development. Maternal & Child Nutrition. 2020;n/a(n/a):e12947.
65. Webbe J, Brunton G, Ali S, Longford N, Modi N, Gale C, et al. Parent, patient and clinician perceptions of outcomes during and following neonatal care: a systematic review of qualitative research. BMJ Paediatr Open. 2018;2(1):e000343.
66. Webbe JWH, Ali S, Sakonidou S, Webbe T, Duffy JMN, Brunton G, et al. Inconsistent outcome reporting in large neonatal trials: a systematic review. Arch Dis Child Fetal Neonatal Ed. 2019.
67. Allin BS, Irvine A, Patni N, Knight M. Variability of outcome reporting in Hirschsprung’s Disease and gastroschisis: a systematic review. Sci Rep. 2016;6:38969.
68. Ross AR, Hall NJ. Outcome reporting in randomized controlled trials and systematic reviews of gastroschisis treatment: a systematic review. J Pediatr Surg. 2016;51(8):1385-9.
69. Hines M, Swinburn K, McIntyre S, Novak I, Badawi N. Infants at risk of cerebral palsy: a systematic review of outcomes used in Cochrane studies of pregnancy, childbirth and neonatology. J Matern Fetal Neonatal Med. 2015;28(16):1871-83.
70. Ioannidis JP, Horbar JD, Ovelman CM, Brosseau Y, Thorlund K, Buus-Frank ME, et al. Completeness of main outcomes across randomized trials in entire discipline: survey of chronic lung disease outcomes in preterm infants. BMJ. 2015;350:h72.
71. Durnea CM, Pergialiotis V, Duffy JMN, Bergstrom L, Elfituri A, Doumouchtsis SK, et al. A systematic review of outcome and outcome-measure reporting in randomised trials evaluating surgical interventions for anterior-compartment vaginal prolapse: a call to action to develop a core outcome set. Int Urogynecol J. 2018;29(12):1727-45.
72. Lourenco T, Pergialiotis V, Duffy J, Durnea C, Elfituri A, Haddad J, et al. A systematic review on reporting outcomes and outcome measures in trials on synthetic mesh procedures for pelvic organ prolapse: Urgent action is needed to improve quality of research. Neurourology and Urodynamics. 2019;38(2):509-24.
73. Lourenço TRM, Pergialiotis V, Durnea CM, Elfituri A, Haddad JM, Betschart C, et al. A systematic review of reported outcomes and outcome measures in randomized trials evaluating surgical interventions for posterior vaginal prolapse to aid development of a core outcome set. International Journal of Gynecology & Obstetrics. 2020;148(3):271-81.
74. Lourenço T, Pergialiotis V, Durnea C, Elfituri A, Haddad JM, Betschart C, et al. A systematic review of reported outcomes and outcome measures in randomized controlled trials on apical prolapse surgery. International Journal of Gynecology & Obstetrics. 2019;145(1):4-11.
75. Rada MP, Jones S, Falconi G, Milhem Haddad J, Betschart C, Pergialiotis V, et al. A systematic review and meta-synthesis of qualitative studies on pelvic organ prolapse for the development of core outcome sets. Neurourology and Urodynamics. 2020;n/a(n/a).
76. Pergialiotis V, Durnea C, Elfituri A, Duffy J, Doumouchtsis SK, International Collaboration for Harmonising Outcomes R, et al. Do we need a core outcome set for childbirth perineal trauma research? A systematic review of outcome reporting in randomised trials evaluating the management of childbirth trauma. BJOG. 2018;125(12):1522-31.
77. Simpson RC, Thomas KS, Murphy R. Outcome measures for vulval skin conditions: a systematic review of randomized controlled trials. Br J Dermatol. 2013;169(3):494-501.
78. Iliodromiti S, Wang W, Lumsden MA, Hunter MS, Bell R, Mishra G, et al. Variation in menopausal vasomotor symptoms outcomes in clinical trials: a systematic review. BJOG: An International Journal of Obstetrics & Gynaecology. 2020;127(3):320-33.
79. Potter S, Brigic A, Whiting PF, Cawthorn SJ, Avery KN, Donovan JL, et al. Reporting clinical outcomes of breast reconstruction: a systematic review. J Natl Cancer Inst. 2011;103(1):31-46.
80. Potter S, Harcourt D, Cawthorn S, Warr R, Mills N, Havercroft D, et al. Assessment of cosmesis after breast reconstruction surgery: a systematic review. Ann Surg Oncol. 2011;18(3):813-23.
81. Lee C, Sunu C, Pignone M. Patient-Reported Outcomes of Breast Reconstruction after Mastectomy: A Systematic Review. Journal of the American College of Surgeons. 2009;209(1):123-33.
82. Potter S, Browning D, Savovic J, Holcombe C, Blazeby JM. Systematic review and critical appraisal of the impact of acellular dermal matrix use on the outcomes of implant-based breast reconstruction. Br J Surg. 2015;102(9):1010-25.
83. Agha RA, Fowler AJ, Herlin C, Goodacre TE, Orgill DP. Use of autologous fat grafting for breast reconstruction: a systematic review with meta-analysis of oncological outcomes. J Plast Reconstr Aesthet Surg. 2015;68(2):143-61.
84. Al Wattar BH, Teede H, Garad R, Franks S, Balen A, Bhide P, et al. Harmonising research outcomes for polycystic ovary syndrome: an international multi-stakeholder core outcome set. Human Reproduction. 2020;35(2):404-12.
85. Egan AM, Galjaard S, Maresh MJA, Loeken MR, Napoli A, Anastasiou E, et al. A core outcome set for studies evaluating the effectiveness of prepregnancy care for women with pregestational diabetes. Diabetologia. 2017;60(7):1190-6.
86. Jansen LAW, Koot MH, van‘t Hooft J, Dean CR, Duffy JMN, Ganzevoort W, et al. A core outcome set for hyperemesis gravidarum research: an international consensus study. BJOG: An International Journal of Obstetrics & Gynaecology. 2020;n/a(n/a).
87. Al Wattar BH, Tamilselvan K, Khan R, Kelso A, Sinha A, Pirie AM, et al. Development of a core outcome set for epilepsy in pregnancy (E-CORE): a national multi-stakeholder modified Delphi consensus study. BJOG. 2017;124(4):661-7.
88. Healy P, Gordijn SJ, Ganzevoort W, Beune IM, Baschat A, Khalil A, et al. A Core Outcome Set for the prevention and treatment of fetal GROwth restriction: deVeloping Endpoints: the COSGROVE study. Am J Obstet Gynecol. 2019;221(4):339 e1- e10.
89. van ’t Hooft J, Duffy JM, Daly M, Williamson PR, Meher S, Thom E, et al. A Core Outcome Set for Evaluation of Interventions to Prevent Preterm Birth. Obstet Gynecol. 2016;127(1):49-58.
90. Devane D, Begley CM, Clarke M, Horey D, C OB. Evaluating maternity care: a core set of outcome measures. Birth. 2007;34(2):164-72.
91. Perry H, Duffy JMN, Reed K, Baschat A, Deprest J, Hecher K, et al. Core outcome set for research studies evaluating treatments for twin–twin transfusion syndrome. Ultrasound in Obstetrics & Gynecology. 2019;54(2):255-61.
92. Townsend R, Duffy JMN, Sileo F, Perry H, Ganzevoort W, Reed K, et al. A core outcome set for studies investigating the management of selective fetal growth restriction in twins. Ultrasound Obstet Gynecol. 2019.
93. Dos Santos F, Drymiotou S, Antequera Martin A, Mol BW, Gale C, Devane D, et al. Development of a core outcome set for trials on induction of labour: an international multistakeholder Delphi study. BJOG. 2018;125(13):1673-80.
94. Briscoe KE, Haas DM. Developing a Core Outcome Set for Cesarean Delivery Maternal Infectious Morbidity Outcomes. Am J Perinatol. 2019.
95. Meher S, Cuthbert A, Kirkham JJ, Williamson P, Abalos E, Aflaifel N, et al. Core outcome sets for prevention and treatment of postpartum haemorrhage: an international Delphi consensus study. BJOG. 2019;126(1):83-93.
96. Bogdanet D, Reddin C, Macken E, Griffin TP, Fhelelboom N, Biesty L, et al. Follow-up at 1 year and beyond of women with gestational diabetes treated with insulin and/or oral glucose-lowering agents: a core outcome set using a Delphi survey. Diabetologia. 2019;62(11):2007-16.
97. Webbe JWH, Duffy JMN, Afonso E, Al-Muzaffar I, Brunton G, Greenough A, et al. Core outcomes in neonatology: development of a core outcome set for neonatal research. Arch Dis Child Fetal Neonatal Ed. 2019.
98. Allin BSR, Bradnock T, Kenny S, Kurinczuk JJ, Walker G, Knight M, et al. NETS(1HD) study: development of a Hirschsprung’s disease core outcome set. Arch Dis Child. 2017;102(12):1143-51.
99. Potter S, Holcombe C, Ward JA, Blazeby JM, Group BS. Development of a core outcome set for research and audit studies in reconstructive breast surgery. Br J Surg. 2015;102(11):1360-71.
100. Moller MH. Patient-important outcomes and core outcome sets: increased attention needed! Br J Anaesth. 2019;122(4):408-10.
101. Vermeulen E, Karsenberg K, van der Lee JH, de Wildt SN. Involve Children and Parents in Clinical Studies. Clin Transl Sci. 2020;13(1):11-3.
102. Molloy EJ, Mader S, Modi N, Gale C. Parent, child and public involvement in child health research: core value not just an optional extra. Pediatric Research. 2019;85(1):2-3.
103. Keeley T, Williamson P, Callery P, Jones LL, Mathers J, Jones J, et al. The use of qualitative methods to inform Delphi surveys in core outcome set development. Trials. 2016;17(1):230.
104. Young B, Bagley H. Including patients in core outcome set development: issues to consider based on three workshops with around 100 international delegates. Research Involvement and Engagement. 2016;2(1):25.
105. Jones J, Brown E, Volicer L. Target outcomes for long-term oral health care in dementia: a Delphi approach. Journal of Public Health Dentistry 2000;60:330–4.
106. Gargon E, Crew R, Burnside G, Williamson PR. Higher number of items associated with significantly lower response rates in COS Delphi surveys. Journal of Clinical Epidemiology. 2019;108:110-20.
107. De Villiers M, De Villiers P, Kent A. The Delphi technique in health sciences education research. Medical teacher. 2005;27(7):639-43.
108. Clayton M. Delphi: a technique to harness expert opinion for critical decision-making tasks in education. Educational Psychology. 1997;17:373–86.
109. Campbell SM, JA C. Consensus methods in prescribing research. J Clin Pharm Ther. 2001;26(1):5-15.
110. Bloor M, Sampson H, Baker S, Dahlgren K. Useful but no Oracle: Reflections on the use of a Delphi Group in a multi-methods policy research study. Qualitative Research. 2015;15(1):57-70.
111. Sinha IP, Smyth RL, Williamson PR. Using the Delphi technique to determine which outcomes to measure in clinical trials: recommendations for the future based on a systematic review of existing studies. PLoS Med. 2011;8(1):e1000393.