Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2006
Responsiveness of the National Institutes of Health Chronic Prostatitis Symptom Index (NIH-CPSI).
СтатьяРандомизированное исследованиеПоддержка NIH: внешняя программаВалидационное исследованиеНазвание и аннотация: Перевод в очереди
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Propert K J, Litwin M S, Wang Y, Alexander R B, Calhoun E, Nickel J C, O'Leary M P, Pontari M, McNaughton-Collins M, Chronic Prostatitis Collaborative Research Network (CPCRN)
Аннотация
OBJECTIVES: The NIH-Chronic Prostatitis Symptom Index (NIH-CPSI) was developed to assess symptoms and quality of life in men with chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS). We assessed the responsiveness of the NIH-CPSI to change over time and defined thresholds for changes perceptible to patients.
METHODS: We studied 174 men with CP/CPPS who participated in a placebo-controlled randomized clinical trial. Changes from baseline to six weeks in the NIH-CPSI total score and pain, urinary, and quality of life subscores were compared to a global response assessment (GRA). Effect sizes and Guyatt statistics were calculated to evaluate responsiveness; 95% confidence intervals were produced using bootstrapping.
RESULTS: All scores decreased over time with the largest decrease in subjects who reported on the GRA that they were markedly improved. The NIH-CPSI total, pain, and quality of life scores were highly responsive in the improved groups; the urinary score showed minimal responsiveness. There was no evidence of responsiveness among those subjects who worsened on the trial. ROC curves identified a 6-point decline in the NIH-CPSI total score as the optimal threshold to predict treatment response.
CONCLUSIONS: The NIH-CPSI total score and pain and quality of life subscores are responsive to change over time.
METHODS: We studied 174 men with CP/CPPS who participated in a placebo-controlled randomized clinical trial. Changes from baseline to six weeks in the NIH-CPSI total score and pain, urinary, and quality of life subscores were compared to a global response assessment (GRA). Effect sizes and Guyatt statistics were calculated to evaluate responsiveness; 95% confidence intervals were produced using bootstrapping.
RESULTS: All scores decreased over time with the largest decrease in subjects who reported on the GRA that they were markedly improved. The NIH-CPSI total, pain, and quality of life scores were highly responsive in the improved groups; the urinary score showed minimal responsiveness. There was no evidence of responsiveness among those subjects who worsened on the trial. ROC curves identified a 6-point decline in the NIH-CPSI total score as the optimal threshold to predict treatment response.
CONCLUSIONS: The NIH-CPSI total score and pain and quality of life subscores are responsive to change over time.