Cross checking can be performed using various methods:
1. Data Source Comparison: Comparing data from multiple sources, such as hospital records, surveys, and registries, to identify discrepancies. 2. Triangulation: Using multiple methods or data sources to study the same phenomenon, which helps in validating the results. 3. Peer Review: Having other experts review the data and methodology to identify potential errors or biases. 4. Reanalysis: Reanalyzing the data using different statistical methods to check for consistency.
