ABSTRACT
OBJECTIVE@#To develop a specific quality of life scale for Chinese Type 2 diabetes mellitus (DM) patients.@*METHODS@#According to the quality of life definition of WHO, we used methods adhered to the rigorous guidelines of instrument development in item pool formation, item selection and scale validation with the data of 236 Type 2 diabetic patients recruited.@*RESULTS@#An 87-item Quality of Life Scale for patients with Type 2 DM-prior test version ( DMQLS), including 5 domains ( disease, physical, social, psychological, and satisfaction ) was developed and showed good reliability and validity. The disease domain made up of Type 2 diabetes mellitus-specific sub-scale and the other 4 domains formed the generic sub-scale for adults. The test-retest correlation coefficient, Cronbach's Alpha coefficient and split-half reliability coefficient of DMQLS were 0.996, 0.969 and 0.879, respectively. Twenty-one common factors were extracted according to the conceptual model. The scale's correlations with SF-36 and Diabetes Quality of Life Measure ( DQOL ) were 0.763 and 0.658. DMQLS could discriminate among those with different quality of lives.@*CONCLUSION@#DMQLS is reliable, valid and sensitive, and can be used to evaluate the curative effect of Type 2 diabetic patients.
Subject(s)
Adult , Female , Humans , Male , Diabetes Mellitus, Type 2 , Psychology , Evaluation Studies as Topic , Psychometrics , Quality of Life , Reproducibility of Results , Surveys and Questionnaires , Reference StandardsABSTRACT
OBJECTIVE@#To develop a specific quality of life (QOL) scale for Chinese patients with benign prostatic hyperplasia (BPH).@*METHODS@#The scale was developed with the programmed decision methods. The item pool was certified by experts. Five methods were used in item selection after a pilot study for which 256 BPH patients had been recruited. The scale was evaluated by its reliability and validity.@*RESULTS@#We formed a 27-item quality of life scale specific for patients with benign prostatic hyperplasia prior test version (BPHSQL). The test-retest correlation coefficient and Cronbach's alpha coefficient of BPHSQL were 0. 774 and 0. 945. The structure of the scale was similar to the theory construction. The scale's correlation coefficients with criteria ranged from 0.531 to 0.700. BPHSQL could well discriminate the quality of life between BPH and non-BPH patients as well as patients with different degrees of symptoms, different sources and patients with or without urethral catheters.@*CONCLUSION@#BPHSQL is reliable, valid and sensitive, and will be a convenient tool in clinical research to provide advice on different treatments for different patients.