The Delphi method has been widely used in the construction of the index system, and the academic community has reached a consensus on its effectiveness and rationality [27,29-30]. Applying Delphi method to explore the multidimensional health index system of occupational population is a useful attempt and exploration for the comprehensive evaluation of health education and health promotion of general occupational population.We invited 15 experts in relevant health fields who were deputy senior or above to conduct two rounds of Delphi expert consultation, and the number of experts was relatively reasonable [30]. The positive coefficients of the two rounds of expert consultation are 100% and 90% respectively, which shows that the experts are interested in this research and generally have high participation enthusiasm. It is generally believed that the authority coefficient of experts is greater than 70% and the research is reliable[26]. The authority coefficient of experts consulted this time is 0.90, which can be considered to be relatively authoritative and representative. After two rounds of Delphi consultation, the coordination coefficients of the importance, scientificalness, feasibility, and classification rationality of indicators at all levels have increased, and the differences are statistically significant, indicating that the degree of coordination of expert opinions is relatively high, and the opinions are gradually unified.
Health refers to physical health, mental health and good social adaptability [31]. Factors affecting the health of occupational groups are complex and diverse with the rapid development of modern economy and society. A single health index can not comprehensively reflect and measure the health status of the occupational population, and a series of indicators covering all dimensions of the health of the occupational population are needed. At this time, the theory of health ecology highlights its good rationality and applicability. Therefore, we constructed a multi-dimensional health index system covering the health of occupational people, from the perspective of health ecology, combined with literature review. The system covers the important links of population health management in the three-level prevention of diseases, such as individual physiology, psychology, occupational health knowledge, life behavior habits, social environment, health skills and so on. It also reflects the multi-level and complexity of the influence of environment on individuals in the theory of health ecology.The weight coefficients of "individual characteristics", "health knowledge", "health behavior" and "health skill" are 0.252, 0.256, 0.248 and 0.244 respectively. Under the four dimensions, the weight coefficient is relatively close, and the "health knowledge" is slightly higher. It can be seen that health knowledge can not be ignored. Whether it is the physical health level of the individual, the mastery of health knowledge, the cultivation of behavior habits and the cultivation of occupational skills, they are all an indispensable part of the health system of the occupational population.
We constructed a multi-dimensional health index system of occupational population, which includes 4 first-level indicators, 13 second-level indicators and 41 third-level indicators, and calculates the weight values of all levels of indicators. The index system has good reliability, and can be used to comprehensively measure and reflect the multi-dimensional health status of occupational groups to a certain extent, and guide the individuals of occupational groups to form a good healthy lifestyle. At the same time, it helps decision makers to notice the changes in the health needs of the population, formulate scientific and effective health management and intervention measures and evaluate their effects, and can help my country formulate multi-dimensional health evaluation index models for general occupational groups, health intervention measures, and medical and health institutions. Rationally allocate public health resources and provide scientific references. However, the multi-dimensional index system of occupational population constructed in this study is still in the exploratory stage, only for general occupational population, does not include special types of work. In addition, the selection and setting of system indicators can not completely exclude the influence of subjective factors. In order to make the evaluation index more objective and scientific, it is also necessary to verify and screen the determined health index in further measurement, so that it can objectively, truly and accurately reflect and evaluate the health status of the general occupational population in practical application.