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The following best practice recommendations are general data collection principles for use by organizations to ensure data collected are fit for purpose, complete, and of high quality.
| Num | Best Practice Recommendation | Rationale |
| 1 | Collect necessary data only. CRFs should focus on collecting only applicable data in alignment with regulatory needs. The protocol should clearly state which data will be collected in the study. | Usually, only applicable data collected in alignment with regulatory needs should be collected on the CRF, due to the cost and time associated with collecting and fully processing the data. However, some fields on a CRF may be present to support electronic data capture (EDC) functionality TOBA-438 - Getting issue details... STATUS and/or review and cleaning of data through automated edit checks. The protocol (and SAP, when it is prepared in conjunction with the protocol) should be reviewed to ensure that the parameters needed for analysis are collected and can be easily analyzed. The statistician and/or principal investigator is responsible TOBA-704 - Getting issue details... STATUS for confirming that the CRF collects all of the data necessary to support the analysis. |
| 2 | CRF development should be a controlled, documented process that incorporates (as applicable):
CRF development should be controlled by standard operating procedures (SOPs) covering these topics, as well as training. | A controlled process for developing CRFs will help ensure that CRFs comply with applicable standards and processes. TOBA-589 - Getting issue details... STATUS |
| 3 | The CRF design process should include adequate review and approval steps, and each reviewer should be informed on the scope of the review they are expected to provide. The team that designs the data collection instruments for a study should be involved in the development of the protocol and should have appropriate expertise represented on the CRF design team, including the following:
Ideally, the CRF should be developed in conjunction with the protocol (and the SAP, if available). All research-related data on the CRF should be addressed in the protocol to specify how and when it will be collected. | Reviewers from different functions increase the probability that the CRF will be easier to complete and support the assessment of the product as defined in the protocol and SAP. The CRF design team should ensure that the data can be collected in a manner that is consistent with the implementer’s processes and is easy to complete. |
| 4 | Translations of CRFs into other languages should be done under a controlled process by experts who understand both the study questions and the language and culture for which the CRF is being translated. The translation should be a parallel process following the same set of steps with separate reviews and approvals by the appropriate experts. Translations may require author approval and a separate validation of the translated instrument. TOBA-440 - Getting issue details... STATUS CRFs that are translated into other languages should follow the same development process as the original CRF to ensure the integrity of the data collected. Consideration of translation should be part of the CRF development process. Avoid the use of slang or other wording that would complicate or compromise translation into other languages. | Cultural and language issues should be addressed appropriately during the process of translating CRFs to ensure the CRF questions have consistent meaning across languages. |
| 5 | Data that are collected on CRFs should be databased. For some fields, such as “Were there any Adverse Events?" the response of "Yes/No” may need to be databased but will not be included in tabulation datasets. Some fields, such as Investigator’s Signature, can be verified by the data entry staff, but an actual signature may not be databased unless there is an e-signature. | If certain data are not required in the CRF, but are needed to aid the investigator or monitor, those data should be recorded on a worksheet (e.g., entry criteria worksheet, dose titration worksheet). All such worksheets should be considered source documents or monitoring tools and should be maintained with the study files. |
| 6 | Establish and use standardized CRFs. | Using data collection standards across studies saves time and money across tobacco product development steps. Using standards:
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