The total effective rate , the stool property and state , the quality of life ( QOL ) , and TCM syndrome efficacy were assessed by IBS bowel symptom severity scale ( IBS-BSS ) , IBS defecation state questionnaire ( IBS-DSQ ) , IBS quality of life questionnaire ( IBS-QOL ) , and traditional Chinese medicine pattern curative effect scoring system ( TCM-PES ) before and after treatment .