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| title | Information for Reviewers |
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Text in black is part of the template used to create this document and is not revised under CDISC internal or public review. Please review the blue text; this text represents the changes made to the template that are specific to this QRS instrument. |
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| Title | Kurtzke Expanded Disability Status Scale (EDSS) |
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| CDISC Reference | Clinical Classification Supplement to the Study Data Tabulation Model Implementation Guide for Human Clinical Trials |
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| QRS Short Name | |
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| QRS Permission Status | Public Domain |
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| Team | Multiple Sclerosis Standards Team and CDISC Questionnaires, Ratings, and Scales (QRS) Subteam |
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| Supplement Version | 2.0 |
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| Status | DRAFT |
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| Date | 20222023-09-2707 |
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| Notes for Reviewers | This supplement is intended to be used with other CDISC user guides for specific therapeutic/disease areas and follows the CDISC Study Data Tabulation Model Implementation Guide for Human Clinical Trials. |
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20222023-09-2707| Jira |
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| key | QRSSUPP-382 |
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| 2.0 Draft | - This measure was re-evaluated to fit the definition of a clinical classification measure. The domain was changed from the QS to RS domain.
- The EDSS v2.0 supplement was updated to the wiki Clinical Classifications supplement template.
- The RSEVAL assumption was removed from this supplement, because it is not captured on the CRF and no assumptions are made on the potential values to include in the example.
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| key | QRSSUPP-381 |
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- The example was reduced from 20 to 16 subjects. The original VISITNUM = 2 was revised to 1 and the RSLOBXFL variable was added to represent a baseline response.
- The example was updated by adding USUBJID = "P0016" to represent how a missing visit is handled when the instrument was not filled out.
- Added the description of the Functional Systems (FS) to section 4 SDTM Mapping Strategy.Added the description of the relationship relationship
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| key | QRSSUPP-485 |
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between the Kurtzke Expanded Disability Status Scale (EDSS) and Kurtzke Functional Systems Scores (KFSS) instruments are (i.e., intended to be used in conjunction with one another) in section Section 3.1, Assumptions for theRSDomain Model.
| 2013-10-23 | 1.0 Final |
© 2022 Clinical Data Interchange Standards Consortium, Inc. All rights reserved.
1 Introduction
This document describes the CDISC implementation of the Kurtzke Expanded Disability Status Scale (EDSS) instrument.
- Updated the example to include a subject's example of the KFSS responses
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serving as the source to determine the subject's EDSS score.
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| 2013-10-23 | 1.0 Final |
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© 2023 Clinical Data Interchange Standards Consortium, Inc. All rights reserved.
1 Introduction
This document describes the CDISC implementation of the Kurtzke Expanded Disability Status Scale (EDSS) instrument.
CDISC did not modify this questionnaires, ratings, CDISC did not not modify this questionnaires, ratings, and scales (QRS) instrument to meet Clinical Data Acquisition Standards Harmonization (CDASH) case report form (CRF) standards.| Jira |
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| key | QRSSUPP-383 |
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The CDISC Intellectual Property Policy can be found on the CDISC website at: https://www.cdisc.org/about/bylaws.
1.1 Representations and Warranties, Limitations of Liability, and Disclaimers
This document is a supplement to the SDTMIG for Human Clinical Trials and is covered under Appendix F of that document, which describes representations, warranties, limitations of liability, and disclaimers. Please see Appendix F of the SDTMIG for a complete version of this material.
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Although the United States Food and Drug Administration (US FDA) has provided input with regard to this supplement, this input does not constitute US FDA endorsement of any particular instrument.
2 Copyright Status
CDISC believes this instrument to be in the public domain, but you should perform your own assessment. CDISC has included the EDSS in the CDISC library of QRS data standards supplements. Hence, CDISC developed RSTESTCD and RSTEST for each item based on the actual text on the instrument. There may be many versions of this instrument in the public domain or copyrighted. CDISC has chosen to use this version as the data standard.
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Note: CDISC Controlled Terminology is maintained by National Cancer Institute (NCI) Enterprise Vocabulary Services (EVS). The most recent version should be accessed through the CDISC website at: https://www.cdisc.org/standards/terminology/controlled-terminology.
Reference for the EDSS:
- Kurtzke JF. Rating neurologic impairment in multiple sclerosis: An
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expanded disability status scale (EDSS). Neurology. 1983 Nov;33(11):1444-52.
3 The RS Domain Model
3.1 Assumptions for the RS Domain Model
All assumptions and business rules described in the SDTMIG RS domain are applicable to this supplement. Additional assumptions specific to the EDSS are listed below.
The EDSS is an ordinal clinical rating scale that is used to measure the disability status of subjects. The item response is a range from 0 to 10 in half-point increments that measures the disability status. The Kurtzke Expanded Disability Status Scale (EDSS) and Kurtzke Functional Systems Scores (KFSS) instruments are intended to be used in conjunction with one another. The KFSS should first be administered by the evaluator and results from this assessment are then applied to determine an EDSS scale score (Kurtzke, 1983). A change in the EDSS should only occur if there has been a change of one or more in the Functional System (FS) scores. Please review the published Kurtzke Functional Systems Scores (KFSS) for details on the functional system scores.
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| columnIds | issuekey,summary,issuetype,created,updated,duedate,assignee,reporter,priority,status,resolution |
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| columns | key,summary,type,created,updated,due,assignee,reporter,priority,status,resolution |
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| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
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The Kurtzke Expanded Disability Status Scale (EDSS) and Kurtzke Functional Systems Scores (KFSS) instruments are intended to be used in conjunction with one another. The KFSS should first be administered by the evaluator; results from this assessment are then applied to determine an EDSS scale score (Kurtzke, 1983). A change in the EDSS should only occur if there has been a change of 1 or more Functional System (FS). Please review the published Kurtzke Functional Systems Scores (KFSS) for details.| Jira |
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| key | QRSSUPP-482 |
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The original scores include a numeric rating (0-10) and a definition of what is represented by the rating (e.g., 2.5 = "Minimal disability in two| Jira |
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FS| Jira |
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."). For the EDSS, RSORRES is populated with the text description while the numeric rating is represented in the standardized character and numeric result variables RSSTRESC and RSSTRESN.
Three responses to the EDSS ratings exceeded the 200-character limit for the RSORRES variable and needed to be reduced to fewer than 200 characters. Section 4, SDTM Mapping Strategy, indicates which item responses were revised in order to fit the 200-character limit.
Terminology
RSCAT, RSTESTCD, and RSTEST values are included in CDISC Controlled Terminology.
A full list of value sets for the result fields is provided in Section 4, SDTM Mapping Strategy.
3.2 Example for the EDSS RS Domain Model
The EDSS example below shows the terminology used to implement the instrument in the RS domain. This example shows the data for 1 subject collected at the baseline and visit 2
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for the EDSS instrument. The example uses CDISC Controlled Terminology for RSTESTCD, RSTEST, and RSCAT. All original results, matching the CRF item response text, are represented in QSORRES.This result is then represented as a standard numeric score in QSSTRESN and as a standard character representation in QSSTRESC.| Info |
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We are unable to make the example consistently show blue in the Wiki. All examples are updated for each QRS instrument so we ask that you please review the example below. |
The tables
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represents the items from the KFSS and EDSS instruments to show their relationship. | Jira |
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The KFSS responses are used to determine the EDSS score.| Jira |
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| key | QRSSUPP-488 |
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Rows 12-22: Show the subject was not evaluated on this instrument at visit 2. Since the visit was missed, the reason for not completing the visit was not collected, no date is assumed for when the visit would have occurred. |
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| Row | STUDYID | DOMAIN | USUBJID | RSSEQ | RSTESTCD | RSTEST | RSCAT | RSORRES | RSSTRESC | RSSTRESN | RSSTAT | RSLOBXFL | VISITNUM | RSDTC | | 1 | STUDYX | RS | P0001 | 1 | KFSS101 | KFSS1-Pyramidal Functions |
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3.2 Example for the EDSS RS Domain Model
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Note: Normally the dataset example represents multiple items for subject across multiple visits. In the case of the EDSS instrument, there is only 1 item assessed at a single timepoint. This example represents 16 individual subjects with 16 unique responses from the EDSS instrument to demonstrate how each response is formatted.
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We are unable to make the example consistently show blue in the Wiki. All examples are updated for each QRS instrument so we ask that you please review the example below. |
The table represents the items from the EDSS instrument. | Jira |
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| Rows 8, 9, 14: | Represent RSORRES values that needed to be shortened in order to meet the 200-character SAS V5 transport file restriction. | | Row 16: | Represents a subject (P0016)| Jira |
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that was not evaluated on this instrument at visit 1. Since the visit was missed, the reason for not completing the visit was not collected, no date is assumed for when the visit would have occurred | | Dataset2 |
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| Row | STUDYID | DOMAIN | USUBJID | RSSEQ | RSTESTCD | RSTEST | RSCAT | RSORRES | RSSTRESC | RSSTRESN | RSSTAT | RSLOBXFL | VISITNUM | RSDTC | 1 | STUDYX | RS | P0001 | 1 | EDSS0101 | EDSS01-Expanded Disability Score | EDSS | Normal neurological exam. | 0 | 0 | | Jira |
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Three responses to the EDSS ratings exceeded the 200-character limit for the RSORRES variable and needed to be reduced to fewer than 200 characters. Section 4, SDTM Mapping Strategy, indicates which item responses were revised in order to fit the 200-character limit.
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Terminology
RSCAT, RSTESTCD, and RSTEST values are included in CDISC Controlled Terminology.
A full list of value sets for the result fields is provided in Section 4, SDTM Mapping Strategy.
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| KFSS | Minimal disability | 2 | 2 |
| Y | 1 | 2012-11-16 | | 2 | STUDYX | RS | P0001 | 2 | KFSS102 | KFSS1-Cerebellar Functions | KFSS | Mild ataxia | 2 | 2 |
| Y | 1 | 2012-11-16 | | 3 | STUDYX | RS | P0001 | 3 | KFSS102A | KFSS1-Weakness Interferes With Testing | KFSS | NOT CHECKED | NOT CHECKED |
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| Y | 1 | 2012-11-16 | | 4 | STUDYX | RS | P0001 | 4 | KFSS103 | KFSS1-Brain Stem Functions | KFSS | Normal | 0 | 0 |
| Y | 1 | 2012-11-16 | | 5 | STUDYX | RS | P0001 | 5 | KFSS104 | KFSS1-Sensory Functions | KFSS | Vibration or figure-writing decrease only, in one or two limbs | 1 | 1 |
| Y | 1 | 2012-11-16 | | 6 | STUDYX | RS | P0001 | 6 | KFSS105 | KFSS1-Bowel and Bladder Functions | KFSS | Normal | 0 | 0 |
| Y | 1 | 2012-11-16 | | 7 | STUDYX | RS | P0001 | 7 | KFSS106 | KFSS1-Visual or Optic Functions | KFSS | Scotoma with visual acuity (corrected) better than 20/30 | 1 | 1 |
| Y | 1 | 2012-11-16 | | 8 | STUDYX | RS | P0001 | 8 | KFSS106A | KFSS1-Presence of Temporal Pallor | KFSS | CHECKED | CHECKED |
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| Y | 1 | 2012-11-16 | | 9 | STUDYX | RS | P0001 | 9 | KFSS107 | KFSS1-Cerebral or Mental Functions | KFSS | Unknown | Unknown |
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2P00021EDSS0101EDSS01-Expanded Disability Score | EDSS | No disability, minimal signs in one FS. | 1 | | KFSS1-Other Functions | KFSS | None | 0 | 0 |
13P00031EDSS0101EDSS01-Expanded Disability Score | EDSS | No disability, minimal signs in more than one FS. | 1.5 | | KFSS1-Other Functions Specify | KFSS |
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1.54P00041EDSS0101EDSS01-Expanded Disability Score | EDSS | Minimal disability in one FS. | 2 | 2 | Y | 1 | 2012-11-16 | 5 | | KFSS1-Pyramidal Functions | KFSS |
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P00051EDSS0101EDSS01-Expanded Disability Score | EDSS | Minimal disability in two FS. | 2.5 | 2.5 | Y | 1 | 2012-11-16 | | KFSS1-Cerebellar Functions | KFSS |
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| | 14 | STUDYX | RS | P0001 | 14 | KFSS102A | KFSS1-Weakness Interferes With Testing | KFSS |
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6P00061EDSS0101EDSS01-Expanded Disability Score | EDSS | Moderate disability in one FS or mild disability in three or four FS though fully ambulatory. | 3 | 3 | Y | 1 | 2012-11-16 | | KFSS1-Brain Stem Functions | KFSS |
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| NOT DONE |
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7P00071EDSS0101EDSS01-Expanded Disability Score | EDSS | Fully ambulatory but with moderate disability in one FS and one or two FS grade 2; or two FS grade 3 or five grade 2. | 3.5 | 3.5 | Y | 1 | 2012-11-16 | | KFSS1-Sensory Functions | KFSS |
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| NOT DONE |
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8P00081EDSS0101EDSS01-Expanded Disability Score | EDSS | Fully ambulatory without aid, self-sufficient, up and about some 12 hours a day despite relatively severe disability; able to walk without aid or rest some 500 meters. | 4 | 4 | Y | 1 | 2012-11-16 | | KFSS1-Bowel and Bladder Functions | KFSS |
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| NOT DONE |
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9P00091EDSS0101EDSS01-Expanded Disability Score | EDSS | Fully ambulatory without aid, up much of the day, able to work a full day, may have some limitation of full activity or require minimal assistance; able to walk without aid or rest some 300 meters. | 4.5 | 4.5 | Y | 1 | 2012-11-16 | | KFSS1-Visual or Optic Functions | KFSS |
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| NOT DONE |
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| | 19 | STUDYX | RS | P0001 | 19 | KFSS106A | KFSS1-Presence of Temporal Pallor | KFSS |
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10P00101EDSS0101EDSS01-Expanded Disability Score | EDSS | Ambulatory without aid or rest for about 200 meters; disability severe enough to impair full daily activities (e.g., to work a full day without special provisions). | 5 | 5 | Y | 1 | 2012-11-16 | | KFSS1-Cerebral or Mental Functions | KFSS |
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| NOT DONE |
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| | 21 | STUDYX | RS | P0001 | 21 | KFSS108 | KFSS1-Other Functions | KFSS |
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| NOT DONE |
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11P00111EDSS0101| KFSS108A | KFSS1-Other Functions Specify | KFSS |
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| NOT DONE |
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| Row 1: | Represents the subject's EDSS score based on the subject's KFSS visit 1 responses, including 2 FS grade 2 and others either 0 or 1 responses. | | Row 2: | Represents that the subject| Jira |
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not evaluated on this instrument at visit 2. Because the visit was missed, the reason for not completing the visit was not collected; no date is assumed for when the visit would have occurred |
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| Row | STUDYID | DOMAIN | USUBJID | RSSEQ | RSTESTCD | RSTEST | RSCAT | RSORRES | RSSTRESC | RSSTRESN | RSSTAT | RSLOBXFL | VISITNUM | RSDTC | | 1 | STUDYX | RS | P0001 | EDSS01-Expanded Disability Score | EDSS | Ambulatory without aid for about 100 meters; disability severe enough to preclude full daily activities. | 5.5 | 5.5 | Y | 1 | 2012-11-16 | 12 | STUDYX | RS | P0012 | 1 | EDSS0101 | EDSS01-Expanded Disability Score | EDSS | Intermittent or unilateral constant assistance (cane, crutch, brace) required to walk about 100 meters with or without resting. | 6 | 6 | Y | 1 | 2012-11-16 | 13 | STUDYX | RS | P0013 | 1 | EDSS0101 | EDSS01-Expanded Disability Score | EDSS | Constant bilateral assistance (canes, crutches, braces) required to walk about 20 meters without resting. | 6.5 | 6.5 | Y | 1 | 2012-11-16 | 14 | STUDYX | RS | P0014 | 1 | EDSS0101 | EDSS01-Expanded Disability Score | EDSS | Unable to walk beyond approximately 5 meters even with aid, essentially restricted to wheelchair; wheels self in standard wheelchair and transfers alone; up and about in wheelchair some 12 hrs a day. | 7 | 7 | Y | 1 | 2012-11-16 | 15 | STUDYX | RS | P0015 | 1 | EDSS0101 | EDSS01-Expanded Disability Score | EDSS | Unable to take more than a few steps; restricted to wheelchair; may need aid in transfer; wheels self but cannot carry on in standard wheelchair a full day; May require motorized wheelchair. | 7.5 | Minimal disability in two FS. | 2.5 | 27.5 |
| Y | 1 | 2012-11-16 | 16 | 2 | STUDYX | RS | P0016P0001 | 1 | EDSS0101 | EDSS01-Expanded Disability Score | EDSS |
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| NOT DONE | 1
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4 SDTM Mapping Strategy
This section is used for reference regarding the CRF data capture and to understand the alignment of the instrument to the SDTM RS domain. It also provides guidance on how the result variables (RSORRES, RSSTRESC, and RSSTRESN) should be populated.
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