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2022 (update whenever text is modified below, even during development) | 1.0 Draft |
© 2022 Clinical Data Interchange Standards Consortium, Inc. All rights reserved.
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This section describes the implementation of the analysis dataset for QRS instruments as based on the Basic Data Structure (BDS) described in the Analysis Data Model Implementation Guide (ADaMIG). The ADaMIG can be found on the CDISC website at https://www.cdisc.org/standards/foundational/adam. The BDS was chosen as the model for analysis datasets of QRS instruments because it supports a wide variety of analyses, including summaries of total score by timepoint as well as change from baseline by timepoint. This data structure allows the ADaM variables PARAM and PARAMCD to come directly from Study Data Tabulation Model (SDTM) variables QSRS.QSRSTEST and QSRS.QSRSTESTCD, respectively, for individually captured questions, thus ensuring traceability between SDTM and ADaM data. If other analyses are required that are not supported by the BDS, then consideration would be needed as to the appropriate structure. Analysis requirements always drive the design of the analysis datasets.
This ADaM supplement is based on the Geriatric Depression Scale Short Form Questionnaire Supplement Version 2.0 Acute Physiology and Chronic Health Evaluation II (APACHE II) Clinical Classification Supplement Version 1.1 to the SDTM Implementation Guide for Human Clinical Trials (SDTMIG). The Geriatric Depression Scale Short Form is known by several names, including GDS SHORT FORM, GDS-15, GDS-SF, and Mood Scale. In this document, it will be referred to as the GDS SHORT FORM.
Note that source SDTM score values may not be suitable for analysis because the values may need to be imputed or transformed. In addition, recalculation of collected values may be needed per analysis rules. In these cases, the derivation of AVAL may not be a simple copying of QSRS.QSRSSTRESN.
These specific analysis implementation details for the GDS SHORT FORM are APACHE II are meant to be used in conjunction with ADaMIG. All completed questionnaires, ratings, and scales documentation can be found on the CDISC website at: https://www.cdisc.org/foundational/qrs.
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