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The Life Quality Index (LQI) is a compound social indicator of human welfare that reflects the expected length of life in good health and enhancement of the quality of life through access to income. The Life Quality Index combines two primary social indicators: the expectancy of healthy life at birth, E, and the real gross domestic product per person, G, corrected for purchasing power parity as appropriate. Both are widely available and accurate statistics. == Basic concept == The three components of the Life Quality Index, G, E and K reflect three important human concerns: the creation of wealth, the duration of life in good health and the time available to enjoy life. The amount of life available to enjoy wealth acts as a multiplying factor upon the value of that wealth. Conversely, the amount of income one has to enjoy that available lifetime acts as a multiplier on the expected duration of life. Unlike the United Nations’ Human Development Index (HDI), the LQI is derived rigorously from the economics of human welfare.〔 〕 Like the HDI it can be used to rank nations in order of human welfare (development, quality of life). However, more important and unlike the HDI, it can also serve as an objective function to be used in setting national or corporate goals for managing risk and to guide effective allocation of society’s scarce resources for the mitigation of risks to life or health. The LQI is a summary indicator of net benefit to society for improving the overall public welfare by reducing risks to life in a cost-effective manner (Lind et al. 1992). In the accounting and assessment of human development, we can view the role of individuals as the principal means, or contributors, to development as well as the ends. For example, the productivity of an individual contributes directly to the aggregate wealth creation in a society. However, the income so generated (to whomsoever it may accrue) increases the capacity of society to provide the necessary means such as the required infrastructure (hospitals, schools, clean water, safe roads and structures). The adequacy of the infrastructure in turn benefits the individual via access to quality health and environment, education and means for culturalexpression and enrichment. The LQI enhances our decision-making capacity in the management of risks to life and health. It brings into sharp focus the choices and trade-offs we have to make between extension of life and creation of productive wealth. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Life Quality Index」の詳細全文を読む スポンサード リンク
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