Quality of life (QoL) is central to human existence, to question whether the QL and what variables affect QL was a center of intellectual debate and research since the early philosophers. Current Research in QL includes many disciplines and subjects, including psychology, sociology, medicine, nursing, pharmacology, economics, education, architecture, geography, business marketing, art, income, employment and social and environmental problems (Albrecht, 1999).
In 1976 released Campbell, Converse, and Rogers a book that became a classic in the quality of American life. Campbell et al. QL described as vague and ethereal entity, something that many people are talking about but nobody has a clear idea of ??what it is. Jobs Al Campbell et al. inspired researchers to seek a precise definition of QL and develop tools to measure QL. A simple glance at the numerous publications in recent years devoted to the study of QL to give readers a clear idea of ??how very powerful this issue was both basic and applied research. In 1975, "was the quality of life" term adopted as "keywords", according to physician Subject Headings U.S. National Library of Medicine classification of scientific research in a computerized search system, MEDLINE. Since then, the numerous books and other publications exclusively devoted to investigation and measurement of QL. Among the many books that provided the necessary steps to develop and test new measures to QL following stand out: the definition of life. Translation Theory, Measurement and Analysis, edited by Sally Shumaker and Richard A. Berzon in 1995, Intercultural Health Assessment: User's Guide, edited by A. Hutchinson, H. Bentzen and S. Koenig-Zahn in 1997, and a collection of quality of life instruments , 5 vols. produced by Sam Salek and published in 1998. There are now two QL-peer-reviewed journals and an electronic catalog on the study of issues, QL. Quality of Life Research, Journal of Research and happiness first appeared in 1992 and 2000, respectively. On-Line Guide to Quality of Life Assessment is a computerized system of programs and databases in the health and quality of life assessment, which provides guidance on the choice of methods for assessment of specific clinical trials and research projects. This system provides a number of large electronic databases that are so useful in facilitating the search for publications QL (Albrecht, 1999).
Concept Of Quality Of Life
It is important to stress once again that the quality of life is not a clearly defined entity with the standard measurement method. This is a complex and multifaceted concept, which continues to defy the consent determination (Fernandez-Ballesteros, 1998). The term QL represent a wide range of areas or dimensions of human existence, ranging from the purchase of basic needs (eg food and shelter) and the material needs and goods in general (eg, vehicles) to achieve a sense of personal satisfaction and happiness. Despite the lack of consensus on definition of QL, experts agree that QOL is a universal human concept that includes both behavioral performance and subjective psychological ...