In an attempt of reducing selection bias and confounding, two sets of cohorts (NAT-Surgery vs. Surgery-ACT, and nCT vs. nCRT) were created using PSM methods at a ratio of 1:1. Propensity scores were estimated using a logistic regression model and including the following characters: age, gender, year of diagnosis, tumor location, grade, clinical T-stage, clinical N-stage, clinical TNM stage (AJCC, 8th edition). PSM was performed using SPSS v25 (IBM Corp., Chicago, IL, USA) with a caliper size of 0.02.

Note: The content above has been extracted from a research article, so it may not display correctly.



Q&A
Please log in to submit your questions online.
Your question will be posted on the Bio-101 website. We will send your questions to the authors of this protocol and Bio-protocol community members who are experienced with this method. you will be informed using the email address associated with your Bio-protocol account.



We use cookies on this site to enhance your user experience. By using our website, you are agreeing to allow the storage of cookies on your computer.