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What is the Chinese version of the IBS symptom severity scale?

high confidence  ·  Last reviewed May 16, 2026

The Irritable Bowel Syndrome Symptom Severity Scoring System (IBS-SSS) is a widely used tool to measure the severity of IBS symptoms in clinical research. A Chinese version, called IBS-SSS-C, has been developed and validated specifically for Chinese-speaking patients. This version was created through a careful translation and cross-cultural adaptation process, and it has been officially approved by the Rome Foundation for use in research.

What the research says

A 2023 study translated and cross-culturally adapted the IBS-SSS into a Chinese version (IBS-SSS-C) following official guidelines from the Rome Foundation 3. The translation involved forward and backward translation steps, and the final version was approved for use by the Rome Foundation 3. The study then validated the IBS-SSS-C by testing its responsiveness to change in 95 patients, test-retest reliability in 35 patients, and floor-ceiling effects 3. Results showed that the IBS-SSS-C total score significantly changed after treatment in patients who reported adequate relief compared to those who did not (p = 0.001) 3. Individual items such as abdominal pain severity (p = 0.032) and abdominal pain frequency (p = 0.001) also showed significant differences 3. This indicates that the IBS-SSS-C is a reliable and valid tool for measuring IBS severity in Chinese populations 3. The IBS-SSS has also been used as a primary outcome measure in other studies, such as a randomized trial of acupuncture for IBS 5, and in research on fecal metabolites in IBS-D patients 9.

What to ask your doctor

  • Is the Chinese version of the IBS Symptom Severity Scale (IBS-SSS-C) appropriate for tracking my IBS symptoms?
  • How is the IBS-SSS-C scored, and what do the scores mean for my condition?
  • Can the IBS-SSS-C help my doctor assess whether my treatment is working?
  • Are there other validated Chinese-language tools for IBS that I should know about?
  • Where can I obtain a copy of the IBS-SSS-C for personal use or for my doctor's office?

This question is drawn from common patient questions about Gastroenterology and answered using cited medical research. We do not provide individualized advice.