Joseph, TobinBhutani, MohitCouper, AmyPullen, RachelNadarajah, RameshAlves, LuisMontero-Arias, Maria FeliciaAl-Lehebi, RiyadBerg, DavidHawkins, Nathaniel M.Hurst, John R.Jenkins, ChristineKaplan, AlanKocks, Janwillem WHKostikas, KonstantinosLam, Carolyn S.P.Lapperre, Therese SRhee, Chin KookSattar, NaveedStolz, DaianaTse, GaryWinders, Tonya APrice, DavidGale, Chris P.2025-12-122025-12-12Joseph, T, Bhutani, M, Couper, A, Pullen, R, Nadarajah, R, Alves, L, Montero-Arias, M F, Al-Lehebi, R, Berg, D, Hawkins, N M, Hurst, J R, Jenkins, C, Kaplan, A, Kocks, J WH, Kostikas, K, Lam, C S P, Lapperre, T S, Rhee, C K, Sattar, N, Stolz, D, Tse, G, Winders, T A, Price, D & Gale, C P 2025, 'Derivation and definitions of clinical study variables for multiple long term conditions in patients with chronic obstructive pulmonary disease : Protocol for a modified Delphi methods and consensus study on behalf of the International Cardiovascular and Respiratory Alliance', Pragmatic and Observational Research, vol. 16, pp. 243—251. https://doi.org/10.2147/POR.S5505331179-7266https://hdl.handle.net/2164/26529Administrative and Operational support for the development of this manuscript was provided by Kate Wignall, Optimum Patient Care, UK. Writing, editorial support, and/or formatting assistance in the development of this manuscript was provided by Shilpa Suresh, MSc of the Observational and Pragmatic Research Institute, Singapore.91465388engCOPDdata standardsregistryquality improvementrandomized clinical trialoutcomesmultimorbidityR Medicine (General)R1Journal article10.2147/POR.S550533