Comparison of two pain rating scales among Chinese cancer patients

The Simple Descriptive Scale (SDS) has been known to be easier to use, but lacks sensitivity when compared to the Visual Analogue Scale (VAS). In this study, 79 cancer patients quantified the intensity of their pain experience on both the VAS and SDS before receiving pain therapy and on the fifth day after commencing the therapy. High correlations were observed between the two scales in age, sex and types of analgesics. The results demonstrate that the SDS provides a simpler and, perhaps, equally sensitive alternative to the VAS, in measurement of cancer pain among Chinese patients. It would be particularly useful for those with language barriers and/or other factors in understanding the requirements or the VAS.