Screening
Proposal of a potential prevention model in preventive medicine Hideo Yamazaki* Hideo Yamazaki Soichi Sakabe Xiao Qing Hikaru Yamazaki Noriko Miyake
The textbook-based model is based on the three preventive categories as practical application stages in preventive medicine. The first category is a primary prevention included health promotion and specific prevention, the second is a secondary prevention included early detection and prompt treatment and the third is a tertiary prevention included prevention of deterioration and rehabilitation. In practical community health activity based on health promotion, the primary prevention is one of the most effective ways to prevent lifestyle-related diseases (LSRDs). In general, although the young-adults have a very low incidence rate in LSRDs, the cumulative exposure to behavioral disadvantage across stages of life may be strongly associated with predispose LSRDs. Therefore, it will be essential to subdivide primary prevention and identify a model that will provide alarm during the susceptibility phase on the natural history of diseases. However, an appraisal way for health conditions in a susceptibility phase based on the natural history of diseases has not been established yet. The purpose of this study is to propose a segmented model of primary prevention and to identify its thresholds.
Methods: A self-report questionnaire consisted of 54 items was administered to the young-adults and the elderly in Japan and linkage data were generated and analyzed in this study. Then the quantification method of the second type was applied to linkage data.
Results: The cutoff point based on the semi-health index (SHI) meant one’s poor health condition in the susceptibility phase was 20.0 as a result of the application of the quantification method of the type second. SHI score was calculated by the norm eigenvectors of the first principal component derived from a principal component analysis (PCA). Furthermore, a distribution of the semi-health condition was determined by using this score. Cutoff points on the distribution were applied to the young-adults and the elderly, respectively.
Conclusions: This model has shown to be useful for evaluating the semi-health state for the young-adults and the elderly from a light of health promotion practice. Furthermore, it was suggested that the method could be applied as a screening test for the potential prevention.