Fox, ChesterPace, Wilson D.Brandt, EliasChang, Ku-LangEdwards, Chelsea L.Evans, AlexanderGaona , GabrielaHan, MeiLan K.Kaplan, AlanKent, RachelKocks, Janwillem WHKruszyk BEng, MajaLe Lievre, Chantal E.Li Voti, TessaMahle, CathyMake, BarryRatigan, Amanda R.Shaikh, AsifSkolnik, NeilStanley, BrooklynYawn, Barbara PPrice, David2022-04-292022-04-292022-04-29Fox, C, Pace, W D, Brandt, E, Chang, K-L, Edwards, C L, Evans, A, Gaona , G, Han, M K, Kaplan, A, Kent, R, Kocks, J WH, Kruszyk BEng, M, Le Lievre, C E, Li Voti, T, Mahle, C, Make, B, Ratigan, A R, Shaikh, A, Skolnik, N, Stanley, B, Yawn, B P & Price, D 2022, 'Variation in demographic and clinical characteristics of Patients with COPD receiving care in U.S. primary care : data from the Advancing the Patient EXperience (APEX) in COPD registry ', Pragmatic and Observational Research, vol. 2022, no. 13, pp. 17-31. https://doi.org/10.2147/POR.S3427361179-7266https://hdl.handle.net/2164/18497Acknowledgements Medical writing support was provided by Dr. Antony Hardjojo of Jaya Medical Writing Pte Ltd, Singapore. Writing, editorial support, and/or formatting assistance in the development of this manuscript was provided by Andrea Teh, BSc (Hons) and Shilpa Suresh, MSc of the Observational and Pragmatic Research Institute, Singapore. We wish to acknowledge Kidane Gebremariam for his contribution to protocol development. BIPI was given the opportunity to review the manuscript for medical and scientific accuracy as well as intellectual property considerations.15563862engQuality of CareObservational StudyResearch DatabasePatient-Reported OutcomesR MedicineRJournal article10.2147/POR.S34273613