The factorial analysis of a quality of life scale for people addicted to drugs in methadone programs

Quality of Life (QoL) is a subjective concept with various dimensions: Physical, mental, social, spiritual(1). It as been studied by different scientific areas, aggregating individuals who present the same diagnosis, to allow comparison of the impact of different programs(2). “Drug users QoL in a substitution program with methadone Scale” 21 items - two subscales, “family and economic situation” (11 items) and “personal satisfaction” (10 items)(1). Range Score: 21-84 (Higher values better QoL). Previous scale reliability - Validation study for the Portuguese population in 2005 (n=236) was obtained a Alfa of Cronbach of 0.88 and in 2011 (n=308) 0.93(3). But no factorial analysis were known.