Objective To construct the brief COPD-International Classification of Functioning, Disability and Health (ICF)core set "activity and participation" evaluation model.

Methods The literature review method was used to construct the initial evaluation model for the "activity and participation" of the COPD-ICF core set. Two rounds of questionnaire investigations were conducted on 16 experts by the Delphi method. We modified and improved the evaluation index and evaluation method of the model based on the results.

Results The effective response rates of the two rounds of questionnaires were 100% and 87.5% respectively. During the consultation process, the experts had a high degree of enthusiasm and coordination, and the consultation results were reliable. The expert authority coefficients were 0.816 and 0.828. The evaluation model for the "activity and participation"of the COPD-ICF core set were constructed.

Conclusions The construction of the brief COPD-ICF core set "activity and participation" evaluation model is an important step in the development of evaluation rules. It can provide a method and basis for the subsequent collection of large sample data for quantitative grading and measurement, and benefit the development of complete COPD-ICF core set "activity and participation" evaluation rules.