A Survey of MSI/MMR testing and real-world treatment pattern for Colorectal Cancer (CRC) in China: SUMMER study

Interventions: Pre-testing survey: 21 physicians (14 clinicians and 7 pathologists) Online quantitative survey: 335 physicians (247 clinicians and 88 pathologists).:1-The pre-test phase involves draft questionnaire formulation, pre-testing survey and finalization of questionnaire for quantitative study. A face-to face or telephone interview will be conducted in pre-test phase, involving a total of 14 clinicians and 7 pathologists.
2-According to the calculation, the total sample size is 335, including 247 clinicians and 88 pathologists. Stratified sampling will be used for selecting participants in quantitative survey. The sample size is the final effective number. The actual size of participants will be adjusted in order to collect 335 valid responses in quantitative survey.
Primary outcome(s): The current status of MSI/MMR detection
Study Design: Cross-sectional