Validity and Reliability Evaluation of the Patient-Reported Outcomes Version of the Common Terminology Criteria for Adverse Events (PRO-CTCAE) for Adult-type Diffuse Gliomas Patients in Chinese Population

First, based on information queries, expert consultation research, online Delphi survey, and survey data analysis, the investigators will determine the questionnaire terms for PRO-CTCAE™ for adult-type diffuse gliomas patients.

A total of 16 experts (13 neurosurgeons, 2 radiotherapists, 1 psychiatrist) from 14 medical centers in China were invited to participate in a consensus-seeking 2-round online Delphi survey. Participants rated the level of their agreement with each symptom term likely to occur during adult diffuse gliomas treatment on a 5-point Likert scale. Terms not reaching consensus over the first round were modified in the second rounds. Consensus was defined as content validity index (CVI) >0.78，coefficient of variation (CV)< 0.35 and average Likert score >3.00.

Second, a prospective, multi-center, real-world study would be performed to assess the validity, reliability, and responsiveness of the customized PRO-CTCAE™ for adult diffuse glioma patients in Chinese population.

This study is an observational, prospective, open-label clinical study. It is estimated that 450 adult diffuse glioma patients will be recruited from 17 research centers, and participants will be included in the cohort in chronological order until the target number of cases is reached. The study is expected to be completed within 2 years. In this study, KPS will be used as the anchor point to compare two groups of patients(KPS≤70 and KPS>70, patients with KPS≤70 is not less than 15%).

The investigators do not intervene in the current treatment plan for patients, only observe the treatment plan, and conduct regular questionnaires on the patients: since the patients are enrolled (within 42 days after surgery), six basic follow-ups and long-term follow-ups will be carried out. The whole follow-ups will last for two years.