Missing values in cancer research can occur due to several reasons:
Patient Non-Compliance: Patients may miss scheduled appointments or fail to complete questionnaires, leading to gaps in the data. Technical Issues: Errors in data collection tools or laboratory processes can result in missing data points. Data Entry Errors: Manual errors during data entry can lead to incomplete datasets. Loss to Follow-Up: Patients may drop out of long-term studies, resulting in incomplete longitudinal data.
