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WG5 Subgroup2 Creation and validation of scripts

WG5 Subgroup2 Creation and validation of scripts. Kevin Kane, PHASTAR Joy Li, FDA. Aims. To create a list of proposed actions To start to produce a flowchart that documents the process of creating and validating scripts

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WG5 Subgroup2 Creation and validation of scripts

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  1. WG5 Subgroup2Creation and validation of scripts Kevin Kane, PHASTAR Joy Li, FDA

  2. Aims • To create a list of proposed actions • To start to produce a flowchart that documents the process of creating and validating scripts • To raise list of questions, issues and points to note for other WG5 subgroups and other WGs

  3. Scope • Other subgroups • What scripts are required • System to house scripts • Leverage existing standards (CDISC) • Try not to limit to specific scripting languages • Well documented and validated • Can be for outputs or data transformation

  4. Scope This is only a start of a framework. Much work will need to be done in the future. We hope you will continue to work with us. Let’s make as much progress as we can – we won’t be able to finalise all details.

  5. Script Creation • Once a script is loaded, the original author is stored as metadata but does not have any further rights or responsibilities • Basic set of programming standards would be useful. If they are too detailed, may conflict with individual organisations • We should develop standard templates for specifications and user guides etc • Investigate “V Model” further for development process • For minor changes, this should not be a separate script – should be added as an option • Encourage backward compatibility but not an absolute requirements

  6. Metadata • Program name • Language • Program version (auto?) • Platform • Purpose • SDTM/ADaMversion/NA (dropbox) • Keywords • Original Author (auto) • Usage counts • Ratings/feedback • Validation status • Assumptions • Inputs • Outputs • Requirements • Comments/notes • Reason for change • Bug flag (DB table?) • Current author • Language version • Validation documentation

  7. Definition of validated script • Script does what it says in specification • Specifications are required • Design • Inputs • Outputs • Test under various scenarios: these scenarios become assumptions • Code review • Validation by experience is not enough • Website/wiki needs a disclaimer • ISSUE: What documentation is required for unvalidated scripts

  8. Process for scripts to be validated • Upload all validation documentation • Approval by moderator (committee?) • Meets all requirements on validation checklist Can we learn from SAS Online help web pages?

  9. Script governance - functions • Approve scripts • Draft specs • Call for Scripts • Template specs • Guidelines • Validation checklist • Library management • Ratings management • Define metadata • Change management • Incentive management

  10. Script governance – documentation required • Guidelines for creating specs • Define metadata • Overlap between specs and metadata • Web based database? • Template for user guide • Basic programming standards • Checklist for approval to validated state • Definition of requirements to consider a script validated

  11. Issues to pass to platform group • Need to be able to review and comment on scripts. Ideally with quality rating • Create and store multiple versions • Need scripts to be able to have different states: e.g. validated; unvalidated; in development • Metadata e.g. program name; language; parameters; bug flag; variables; outcomes; version number (need to decide list of metadata variables) • Check-in check-out (not 100% defined- what happens if one person checks out for long time) • Ability to have multi-person multi-function teams • Can we have a metadata database on a Wiki

  12. Notes • CDISC CTO suggested we find out about FDA Open Toolbox project. Norman Stockbridge and George Rochester from the FDA (ask Mat) • We noted that different user groups may have different requirements e.g. FDA reviewers data exploration

  13. Incentives:Results from brainstorm • Maybe we don’t need any incentive • Encourage people to get a top rating leading to enhanced reputation • Platform records downloads – “most cited script” • Messages to “market”:- • Reputation factor • This system can save organisations money • This is the same code that the FDA will use • Could offer a PhUSE discount or award • FDA recommendation to use scripts • Airmiles/points system – bronze/silver/gold • Academic encouragement : get your methodology adopted • Confirm if we need any money. Ask PHARMA???

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