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Revision History

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© 2024 Clinical Data Interchange Standards Consortium, Inc. All rights reserved. 

1 Introduction

This document describes the CDISC implementation of the Minnesota Tobacco Withdrawal Scale-Revised (MTWS-R) instrument.

There is no known standard case report form (CRF) available for this instrument. CDISC created this CRF to represent the instrument, which CDISC believes is in the public domain. This is not an endorsement of the instrument. The creation of this instrument was based on published articles describing the instrument. Sponsors may create this instrument’s CRF using their style guidelines, but they need to maintain the wording and order of the questions/items and responses as described on the CRF. 

The representation of data collected for this instrument is based on the Study Data Tabulation Model Implementation Guide (SDTMIG) Questionnaires (QS) domain model, which can be found on the CDISC website at: https://www.cdisc.org/standards/foundational/sdtmig.

The specific implementation details for this instrument are meant to be used in conjunction with the SDTMIG. All CDISC questionnaires, ratings, and scales (QRS) documentation packages can be found on the CDISC website at: https://www.cdisc.org/standards/foundational/qrs.

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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Revision History

© 2024 Clinical Data Interchange Standards Consortium, Inc. All rights reserved. 

1 Introduction

This document describes the CDISC implementation of the Minnesota Tobacco Withdrawal Scale-Revised (MTWS-R) instrument.

There is no known standard case report form (CRF) available for this instrument. CDISC created this CRF to represent the instrument, which CDISC believes is in the public domain. This is not an endorsement of the instrument. The creation of this instrument was based on published articles describing the instrument. Sponsors may create this instrument’s CRF using their style guidelines, but they need to maintain the wording and order of the questions/items and responses as described on the CRF. 

The representation of data collected for this instrument is based on the Study Data Tabulation Model Implementation Guide (SDTMIG) Questionnaires (QS) domain model, which can be found on the CDISC website at: https://www.cdisc.org/standards/foundational/sdtmig.

The specific implementation details for this instrument are meant to be used in conjunction with the SDTMIG. All CDISC questionnaires, ratings, and scales (QRS) documentation packages can be found on the CDISC website at: https://www.cdisc.org/standards/foundational/qrs.

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.

CDISC specifies how to structure the data that has been collected in a database, not what should be collected or how to conduct clinical assessments or implement protocols. CDISC disclaims any liability for your use of this material.

2 Copyright Status

CDISC believes this instrument to be in the public domain, but you should perform your own assessment. CDISC has included the MTWS-R in the CDISC inventory of QRS data standards supplements. Hence, CDISC developed QSTESTCD and QSTEST for each item based on the text on the instrument. There may be many versions of this instrument. CDISC has chosen to use this version as the data standard.

The CDISC documentation of this instrument consists of: (1) controlled terminology, (2) standard database structure with examples, and (3) CRF(s) annotated with the CDISC SDTMIG variables with submission values. 

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.

References for the MTWS-R:

• Minnesota Tobacco Withdrawal Scale-Revised (MTWS-R) (Hughes JR. Measurement of the effects of abstinence from tobacco. A qualitative review. Psychol Addict Behav 2007;21:127-137). 
• http://www.med.uvm.edu/behaviorandhealth/research/minnesota-tobacco-withdrawal-scale

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2 Copyright Status

CDISC believes this instrument to be in the public domain, but you should perform your own assessment. CDISC has included the MTWS-R in the CDISC inventory of QRS data standards supplements. Hence, CDISC developed QSTESTCD and QSTEST for each item based on the text on the instrument. There may be many versions of this instrument. CDISC has chosen to use this version as the data standard.

The CDISC documentation of this instrument consists of: (1) controlled terminology, (2) standard database structure with examples, and (3) CRF(s) annotated with the CDISC SDTMIG variables with submission values. 

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.

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Include the following statements as standalone paragraphs for copyrighted instruments:

CDISC has developed this documentation at no cost to the copyright holder or any additional cost to users of the instrument beyond the normal license fees charged by the copyright holder.

CDISC acknowledges [insert the name of the copyright holder, in blue text] (e.g., Dr. A. J. Rush, at the UT Southwestern Medical Center) for the approval to include the QRS Short_Name in the CDISC data standards.

Only include the actual references and all material used in developing the supplement on the reference section below. This should be a reference paper or a website reference in place of a paper.

Reference for the MTWS-R:

Minnesota Tobacco Withdrawal Scale-Revised (MTWS-R) (Hughes JR. Measurement of the effects of abstinence from tobacco. A qualitative review. Psychol Addict Behav 2007;21:127-137). 

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Notes on the use of quotation marks:

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3 The QS Domain Model

3.1 Assumptions for the QS Domain Model

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The MTWS-R evaluates the effects of smoking cessation. It is a 15-item self-report measure of tobacco withdrawal. Each item is rated on a 5-point ordinal scale (0="None", 1="Slight", 2="Mild", 3="Moderate", 4="Severe"). A total score, based on 8 of these items, between 0-32 is also captured.

1. The original scores include a numeric rating (0-4) and a definition of what is represented by the rating (e.g., 0 = "None"). For the MTWS-R, QSORRES is populated with the text description while the numeric rating is represented in the standardized character and numeric result variables QSSTRESC and QSSTRESN.

2. The time period of evaluation for the MTWS-R is populated in the QSEVLINTfield in ISO 8601 format when the evaluation interval can be precisely described as duration. The evaluation interval for the MTWS-R is typically the last 24 hours (QSEVLINT = "-PT24H"). 

3. Records are created in qs.xpt for every instrument item: 

   1. For items with no data, QSORRES, QSSTRESC, and QSSTRESN are all missing and QSSTAT = "NOT DONE". If the reason is known then that reason is represented in QSREASND (e.g., QSREASND = "PREFER NOT TO ANSWER"). If the reason is unknown, then QSSTAT = "NOT DONE" and QSREASND is missing.

   2. Due to the variability of copyright holder and public domain derived subscore and overall the derived score generation processesprocess, records are not included for derived subscores or overall scores that scores that are not provided.

4. The MTWS-R instrument may include an overall score that is considered as captured data on the instrument and is not considered as derived in the example below. This overall score, or  total withdrawal discomfort score, consists of the first eight symptoms. These scores of the first eight symptoms (i.e., QSTESTCDs MTWSR101 through MTWSR108). This score may be submitted in SDTM or derived in the Analysis Data Model (ADaM) per scoring instructions from [Insert copyright holder's name or other source.]. http://www.med.uvm.edu/behaviorandhealth/research/minnesota-tobacco-withdrawal-scale.

   1. The overall score is Subscores and overall scores are represented in QSORRES, QSSTRESC, and QSSTRESN.
   2. If subscores or overall scores are the overall score is received or derived by the sponsor, it is recommended that they are it is submitted to SDTM and verified in ADaM whenever feasible. It is the sponsors repsonsibility responsibility to do this verification based on the instrument's user manual or instructions from the copyright owner.
      

5. Terminology

   1. QSCAT, QSTESTCD, QSTEST, QSORRES, QSSTRESC, and QSSTRESN values are included in CDISC Controlled Terminology.

   2. A full list of value sets for the result fields is provided in Section 4, SDTM Mapping Strategy.

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