Final answer:
The majority of case report form (CRF) data are verified against source record information during the data cleaning process to ensure accuracy before analysis.
Step-by-step explanation:
The majority of case report form (CRF) data are verified against source record information During the data cleaning process. This is an important step in clinical research to ensure the accuracy and integrity of the data. During this phase, data entered into the CRFs are meticulously compared with the original source data, such as medical records, laboratory data, or other relevant documents, to detect and correct any discrepancies.
Data collection process is when information is first gathered, and it may involve fieldwork or accessing various sources. This is followed by data entry, where the information from the collected data is inputted into databases. Data analysis process comes later and involves interpreting the cleaned and validated data to produce meaningful conclusions. Thus, confirming the accuracy of CRF data against source records is essential before moving on to analysis to ensure the results of the study are based on valid data.