A dataset of the definition of healthy longevity in Chinese population based on Delphi method.

Appendix 1 contains terms and concepts related to health and longevity. The research team has reviewed literature and sorted out domestic and foreign terms and concepts related to health and longevity, including healthy aging (6), active aging (7), successful aging (4), and healthy longevity (3), providing reference for exploring the definition of health and longevity. Appendix 2 is the first round of Delphi expert consultation questionnaire, which includes basic information of experts (age, gender, highest education level, professional title, workplace, work field, and years related to elderly health) and a list of consensus items on the definition of health and longevity (4 multiple-choice questions, 4 multiple-choice questions, and 1 open-ended question). Appendix 3 and Appendix 4 respectively provide detailed data on the questions, options, number of respondents, and consensus reached in the first and second rounds of the consultation questionnaire. In the first round, consensus was reached on 4 items, and in the second round, consensus was reached on 5 items, totaling 9 items.