RESUMO
OBJECTIVE: To study health-related quality of life (HRQL) among adults in Iceland with a generic Icelandic instrument, IQL (Icelandic Quality of Life), if it is the same among men and women, and if it changes by increasing age. Furthermore, it was intended to find norms for men and women in different age groups in order to evaluate patients' deviation in HRQL. MATERIAL AND METHODS: IQL was sent to 2800 individuals, a random sample from the national registry, stratified by sex in 10 years age groups from 20-79 years and those above 80 years. For each sub-scale on the instrument and for the combined instrument raw scores were calculated for men and women in the age groups 20-49 years, 50-69 years and 70 years and older which were converted to a T-score. RESULTS: The response rate was 61%, lower among the youngest (20-29 years) as well as among the oldest (80 years and older), but similar for men and women. Internal missing values were few. Reliability of the test was good (Cronbach's alfa=0.91). HRQL among women in general was worse than that of men both in general as well as on most sub-scales. HRQL decreases with advancing age, however, with certain exceptions. A marked difference was found between the youngest and the oldest. The quality of life in the oldest group is worse than among the younger, both in general and on most sub-scales except finance and anxiety. Depression and social function do not change significantly with age. The oldest are especially worse on the scales general health, energy and physical health. Sleep becomes worse with increasing age, especially among women. Five factors explain two thirds of the variance, general health (23.4%), mental wellbeing (20.5%), satisfaction (9.0%), sleep (6.9%) and finance (6.3%). CONCLUSIONS: When evaluating HRQL among patients it is necessary for health-care providers and researchers to take into consideration the difference in HRQL between men and women and the changes occurring with age.
RESUMO
OBJECTIVE: Health-related quality of life (HRQL) is increasingly used to estimate needs for medical treatment, to evaluate its outcome and quality of care. The aim of this study was to compare the HRQL of several diagnostic groups before and after treatment with the HL-test (HL = IQL, Icelandic Quality of Life test) and to study its validity for measuring changes in quality of life. MATERIAL AND METHODS: Patients on waiting lists for coronary catheterization, orthopedic or urologic operations, patients in psychiatric out-patient treatment and patients entering treatment for alcohol dependence were asked to fill in the HL-test, a total of 1195 patients. Three months after treatment they were retested. The results of tests were standarized with population norms available to make them directly comparable with those of the general population. RESULTS: The response rate was 75% in each round. The HRQL of all patients was reduced in all aspects compared to that of the general population, that of the heart and urology patients less so than that of the orthopedic and psychiatric patients. Each group had a specific profile, especially marked for the orthopedic and psychiatric patients. Following treatment the HRQL or some aspects of it improved in all groups, especially for those which it had been most impaired. CONCLUSIONS: Studies of HRQL provide information useful for planning and delivery of health services. The HL-test is an instrument with good validity and reliability which is easy to use for such studies.
