Informative vision characteristics of bruises in the diagnostic algorithm durability of their appearance

Abstract

Objective. The purpose of the work was to analyze the informativeness of the criteria for establishing the limitation of the appearance of bruises and to determine their suitability for inclusion in the algorithm for the development of a computer diagnostic program.Material and methods. Has been processed 4289 "Experts Conclusions" on the definition of the nature and severity of bodily harm, in 523 of them described 2290 bruises. Statistical analysis was performed using computer programs with the Cox model processing function.Results. It has been established that the age of victims significantly affects the dynamics of color changes of the bruises, especially in the last stage of its development, and the gender does not affect it. Bruises that are located on the upper limbs heal faster than in other localizations, the bruises located on the hips and buttocks heal slower. With the increase in the area of damage, the time for its healing slows down. The aging of a bruise correlates with its color. It allows determining these diagnostic criteria as the most informative. The presence of the skin swelling reliably depends on its age and characterizes the initial stages of its development.Conclusions. Thus, the analysis of 6 diagnostic signs showed that 5 criteria could be used to establish the age of occurrence of bruising: age of the victim, localization, area, color of the bruise and the presence of the skin swelling. The more informative value is the type of color of the damage. These criteria can be included in the algorithm of developing a computer diagnostic program.