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Validation of the Moroccan Arabic Version of the Low Anterior Resection Syndrome (LARS) and Wexner Score of Continence Among Rectal Cancer Patients

ABSTRACT: In the past decade, colorectal cancer management improved considerably with total mesorectal excision as well as the multidisciplinary management relying on neoadjuvant radiochemotherapy. This forward leap is currently responsible for an increase in the survivorship of colorectal cancer patients to more than 50% at 5 years. Additively the surgical approach is now more inclined towards sphincter preserving procedures, which allows the conservation of body image but can have negative bowel function repercussions consisting of urgency and incontinence ; all these terms encompassed in the low anterior resection syndrome. In the light of these findings many studies developed assessment tools in order to objectively measure this functional alteration among which are the low anterior resection syndrome questionnaire (LARS) and the WEXNER score. These tools designed to assess bowel function after sphincter-preserving surgery are now translated and validated into various languages and used in different countries. The LARS score relies on the frequency of the symptoms and allows the categorization of patients into 3 groups: no LARS (0-20 points), minor LARS (21-29 points), and major LARS (30-42 points). It assesses the frequency of emptying, incontinence ( liquid, gas ), and other symptoms such as urgency and incomplete voiding. On the other hand, the WEXNER score relies on the examination of the frequency of three types of fecal incontinence (solid, liquid, and gas) and their consequences (pad wearing and lifestyle alteration) with frequency options ranging from never (score 0) through to always (meaning at least once per day; score 4). The score ranges from 0 (perfect continence) to 20 (complete incontinence). The aim of our study is to adapt and validate the LARS and WEXNER score to the moroccan arabic dialect.

DISEASE(S): Rectal Neoplasms,Rectal Cancer Patients,Low Anterior Resection Syndrome

PROVIDER: 2319282 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:Oncological rectal cancer outcomes have improved considerably because of optimal surgery by total mesorectal excision in conjunction with multidisciplinary team management by selective multimodal therapy (ie, neo-adjuvant chemo-radiotherapy). The 5-year survival has increased to more than 50% and local recurrence has been reduced to less than 10%. These advancements have resulted in more patient receiving sphincter-preserving surgery (SPS). With an increasing number of rectal cancer survivors, the investigators observe a rising attention to the disordered bowel function after SPS, called "low anterior resection syndrome" (LARS). LARS appear immediately after surgery, becoming most pronounced during the first few months, and improved thereafter, reaching a steady state after around two years. However, up to 60% of patients with SPS suffer from LARS which impaired their quality of life (QoL). The prevalence and severity of LARS is difficult to assess due to heterogeneity of the assessment tools. A group of Danish authors have recently developed and validated a five-item instruments for evaluation of LARS (LARS score). It represents to date the best questionnaire to capture anorectal postoperative function and consists of five items: incontinence for flatus, incontinence for liquid stool, frequency of bowel movements, clustering of stools, and urgency. It allows a categorization of patients into 3 groups: no LARS (0-20 points), minor LARS (21-29 points), and major LARS (30-42 points). Developed in Danish, it is now internationally validated with translations in Chinese, English, German, Spanish and Swedish. To our knowledge, French version of the LARS score is not yet available. The aim of our study will be to adapt the LARS scale questionnaire to the French language (LARS-F), and assess its psychometric properties. Inclusion criteria will be patients 18 years old or above who were operated for rectal cancer from 2007 to 2015. Exclusion criteria will include the presence of stoma and/or known disseminated or recurrent disease. Patients will be identified through local databases by the local investigators at each of the participating centers with a minimum duration of 24 months after surgery to allow their bowel function to have regained stability. This study will be supported by the French Research Group of Rectal Cancer Surgery in order to allow the feasibility of the project. After translation/back-translation procedures in accordance with the permission from the original authors, the LARS-F score and the whole translation process will be then sent to the original authors for approval. Then a pilot study will be conducted. The French questionnaire (LARS-F score) will be then administered to 100 patients in order to verify the adequacy and degree of comprehension of the questions. Reproducibility will be investigated by a test-retest procedure. A randomly selected subgroup of participants (n= 400) will be sent the LARS-F score questionnaire twice (with an interval of two weeks). The test-retest reliability of the questionnaire will be assessed by the Cohen’s Kappa (no, minor and major LARS scores) or by intra-class correlation coefficient, ICC (quantitative LARS score). Then, eligible patients will receive a postal invitation to complete the LARS-F score and the l’European Organization for Research and treatment of Cancer (EORTC) QLQ-C30 and QLQ-CR29, respectively. The validity of the LARS-F score will be tested by using the indicators of convergent validity and discriminant validity. The convergent validity will be determined notably in this study by computing the correlations between the LARS-F score and the EORTC QLQ-C30 and QLQ-CR29 domains. For discriminant validity testing, the investigators will use known variables to affect bowel function after SPS, such as gender, age, neo-adjuvant radiation therapy, distance of the tumor from the anal verge, prior temporary stoma, and length of postoperative period. The validation of the French version of the LARS score will allow to use a scientific instrument in order to assess both prevalence and severity of LARS. This instrument will allow to develop a future research and clinical practice in France. It will be used in the daily clinical practice to identify patients with LARS score. It will hopefully lead to improve the awareness of clinicians, in order to improve the prevention and the treatment of bowel dysfunction, as well as the information given to patients. In the future, the investigators will able to develop a new patient-led follow-up program based on symptom burden and health-related QoL.

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Validation of the Moroccan Arabic Version of the Low Anterior Resection Syndrome (LARS) and Wexner Score of Continence Among Rectal Cancer Patients

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