Analysis Data Model (ADaM)

Analysis Data Model Implementation Guide v1.1

Analysis Data Model Implementation Guide Version 1.1 (published 2016-02-12) updates Version 1.0 with clarifications, corrections, new variables, additional examples, and references to current documents. The Analysis Data Model Implementation Guide (ADaMIG) is intended to guide the organization, structure, and format of analysis datasets and related metadata. It specifies ADaM standard dataset structures and variables, including naming conventions. It also specifies standard solutions to implementation issues, illustrated with examples. The ADaMIG must be used in close concert with the Analysis Data Model document.

 

** ADaMIG v1.1 Public Review Comments **

 

Older versions of ADaMIG:

ADaMIG v1

 

ADaM Structure for Occurrence Data v1

Version 1.0 (published 2016-02-16) of the ADaM Structure for Occurrence Data (OCCDS) is based on the CDISC Analysis Data Model Version 2.1 and the Analysis Data Model Implementation Guide (ADaMIG) Version 1.1. The OCCDS structure is built on the nomenclature of the Study Data Tabulation Model Implementation Guide (SDTMIG) V3.2 standard for collected data, and has added content required for statistical analyses. The document includes metadata defined for the OCCDS. There are also several examples with displays, data, and associated metadata applied to adverse events, concomitant medications, and medical history.

 

Analysis Results Metadata v1

Version 1.0 of the Analysis Results Metadata Specification for Define-XML v2 is available (Released 30-Jan-2015). The aim of this specification is to support the submission of Analysis Results Metadata as defined in the CDISC ADaM Analysis Data Model Version 2.1 document. The release package consists of a zip file that includes a readme file, the specification document, an ADaM based Define-XML example and the Analysis Results Metadata schema. Refer to the readme file for further details.

CDISC Analysis Results Metadata v1.0 for Define-XML v2

CDISC Analysis Results Metadata v1.0 for Define-XML v2 (Public Review Comments)

 

Analysis Data Model, v2.1

This document explains the purpose of the Analysis Data Model (ADaM) and describes fundamental principles that apply to all analysis datasets, with the driving principle being that the design of analysis datasets and associated metadata facilitate explicit communication of the content of, input to, and purpose of submitted analysis datasets. The model document also describes ADaM metadata, the subject-level dataset ADSL, and a multiple-record-per-subject data structure:  the ADaM Basic Data Structure (BDS). The Analysis Data Model supports efficient generation, replication, and review of analysis results.


 

ADaM Validation Checks v1.3

Version 1.3 (Released 16-Mar-2015) of the ADaM validation checks correspond to the ADaMIG v1.0, ADAE, and BDS-TTE. All changes and updates are described in Appendix A. Some checks have been reworded for clarification. In addition, 75 new checks have been added to cover rules not previously addressed. The additional checks cover the addition of checks for Adverse Events (ADAE) and the ADaM Basic Data Structure for Time-to-Event Analyses. 

 

ADaM v1.2 Validation Checks 

Version 1.2 of the ADaM validation checks correspond to the ADaMIG, v1.0. All changes and updates are described in Appendix 2. Some checks have been reworded for clarification. In addition, 61 new checks have been added to cover rules not previously addressed. The additional checks cover these general categories:

  1. Corollaries to existing checks
  2. Set of checks for *CAT* variables (e.g. BASECAT, PARCATy)
  3. Checks for the use of “y” in a variable name for incremental ordering
  4. Presence and population of PARAM and PARAMCD in BDS datasets
  5. Need to have a minimum of AVAL or AVALC in BDS datasets
  6. Comparison of data values between SDTM.DM and ADSL 7) Set of checks for TRT* sequence and grouping variables

 

The ADaM Basic Data Structure for Time-to-Event Analyses

Version 1.0 of the ADaM Basic Data Structure for Time-to-Event (TTE) Analyses provides definitions and examples of the datasets, variables, and metadata that support general TTE analyses. The three scenarios covered by the document are 1) A Single Endpoint with a Binary Value for Censoring, 2) A Single Endpoint with Multiple Values for Censoring, and 3) Composite Endpoints. There are descriptions of typical analyses that are performed in a Time-to-Event Analysis, including example outputs and associated Results-Level metadata. The document also provides clear step-by-step information about how to create and populate the supportive and analyzed datasets and variables required for Time-to-Event Analysis and full traceability.

 

CDISC ADaM Structure for Adverse Event Analyses

Version 1.0 of the Adverse Event Analysis Document (ADAE) is based on the CDISC Analysis Data Model: Version 2.1 and Implementation Guide v1.0 documents. The AE structure presented in this document is built on the nomenclature of the Study Data Tabulation Model Implementation Guide (SDTMIG) V3.1.2 standard for collected data, and has added attributes, variables, and data structures required for statistical analyses. The document presents metadata defined for the ADAE dataset. There are also several example display layouts and examples of the data and associated metadata that support the examples. 

 

ADaM Examples in Commonly Used Statistical Analysis Methods

The ADaM Examples in Commonly Used Statistical Analysis Methods provides examples of the Analysis Data Model applied in statistical methods that are commonly used. The ADaM subject-level analysis dataset (ADSL) and Basic Data Structure (BDS) and the associated metadata are illustrated. Issues and points to consider when building ADaM datasets and metadata are highlighted.

 

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