Ideally, the offender is available for the interview early in the investigation. The defendant interview is the pivotal point around which the presentence investigation turns. Often, the format is a structured interview during which a standard worksheet is completed. The worksheet follows the format of the presentence report and provides space for recording data about the offense and the offender's characteristics and history. Each item on the form is reviewed with the defendant. Even though some of the data solicited from the offender during this interview may not appear in the final report, it is impossible at this stage to determine what information will be included. No question is asked without a purpose. The defendant's answers will determine follow up questions, items for further investigation or corroboration, and, ultimately, whether the data should be included in the report.