危险因素(Risk Factors)是指在内外环境中与疾病发生及死亡有联系的疾病诱发因素。健康危险因素评价(Health RiskAppraisal,H、R、A)就是研究危险因素与慢性病发病率、死亡率之间的数量依存关系及其规律性的科学,它为疾病发生的预测及预防提供卫生学的指导。我们 Risk factors refer to the predisposing factors associated with the occurrence and death of diseases in the internal and external environment. The Health Risk Appraisal (H, R, A) is the science that studies the quantitative dependence and regularity between risk factors and the incidence and mortality of chronic diseases. It provides hygiene for the prediction and prevention of disease occurrence. guide. we