This is an example of a patient visual analog scale (VAS)- single-item VAS used to assess assess the level of craving based on response to the question “How (i.e., the question “In the past 24 hours, how strong is your craving for cigarettes?”) on a scale from “no craving” to “strong craving” by measuring the number of millimeters (0–100 mm) from the “no craving” dot to the point at which the drawn line intersected the scale.
The Findings About Events or Interventions ( FA ) domain was used for to represent the assessment of craving. Sponsors Applicants may represent findings data in a single FA dataset or split the FA domain into separate datasets, following the guidance in the SDTMIG. In this example, an a FACE dataset was used, indicating that data are findings about clinical events. The craving itself is considered a clinical event, whereas the evaluation of craving at specific time points are is considered findings about the clinical event. A parent record in the Clinical Events (CE) domain is not required.
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Row 1: | Shows the craving VAS for subject 001 at baseline | Row Rows 1- 2: | Show Shows the craving VAS for subject 001 at baseline and Medical terminology was used to define the symptom of interest in FAOBJ. FACAT is populated with the CRF page name.Rows 3-4: |
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Row | STUDYID | DOMAIN | USUBJID | FASEQ | FATESTCD | FATEST | FAOBJ | FACAT | FAORRES | FAORRESU | FASTRESC | FASTRESN | FASTRESU | FAMETHOD |
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FALOBXFL | FAEVAL | VISITNUM | FADTC | FAEVLINT |
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FAANTXLO | FAANVLLO | FAANTXHI | FAANVLHIPS006TGI400 | FA | 001 | 1 | SEV | SEVERITY/INTENSITY | CRAVING | SYMPTOM ASSESSMENTSSYMPTOM ASSESSMENT | 98 | mm | 98 | 98 | mm |
NUMERIC RATING SCALE 11-POINT | Y | PATIENTVISUAL ANALOG SCALE (100 MM) | STUDY SUBJECT | 1 | 2015-06-15 | -P24H |
NO CRAVING | 0STRONG CRAVING | 100 | PS006 | FA | 001 | 2 | SEV | SEVERITY/INTENSITY | CRAVING SYMPTOM ASSESSMENTSSYMPTOM ASSESSMENT | 43 | mm | 43 | 43 | mm |
NUMERIC RATING SCALE 11-POINT | PATIENTVISUAL ANALOG SCALE (100 MM) | STUDY SUBJECT | 12 | 2016-07-15 | -P24H |
NO CRAVING | 0 | STRONG CRAVING | 100 | |
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This example illustrates how information on the scale scoring may be represented as supplemental qualifier variables. A record in a SUPPFA dataset relates back to the parent record(s) via the key identified by the STUDYID, RDOMAIN, USUBJID, and IDVAR/IDVARVAL variables. Here the parent domain (RDOMAIN) is FA, and IDVAR is FASEQ. QNAM holds the name of the supplemental qualifier variable being defined.
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Row | STUDYID | RDOMAIN | USUBJID | IDVAR | IDVARVAL | QNAM | QLABEL | QVAL | QORIG | QEVAL |
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1 | TGI400 | FA | 001 | FASEQ | 1 | FAANTXLO | ANCHOR TEXT LOW | NO CRAVING | ASSIGNED |
| 2 | TGI400 | FA | 001 | FASEQ | 1 | FAANVLLO | ANCHOR VALUE LOW | 0 | ASSIGNED |
| 3 | TGI400 | FA | 001 | FASEQ | 1 | FAANTXHI | ANCHOR TEXT HIGH | STRONG CRAVING | ASSIGNED |
| 3 | TGI400 | FA | 001 | FASEQ | 1 | FAANVLHI | ANCHOR VALUE HIGH | 100 | ASSIGNED |
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| Variable | Label | Type | Role | Origin |
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FAANTXLO | Anchor Text Low | text | Non-standard Variable Qualifier of --TEST/--TESTCD | CRF | FAANVLLO | Anchor Value Low | integer | Non-standard Variable Qualifier of --TEST/--TESTCD | CRF | FAANTXHI | Anchor Text High | text | Non-standard Variable Qualifier of --TEST/--TESTCD | CRF | FAANVLHI | Anchor Value High | integer | Non-standard Variable Qualifier of --TEST/--TESTCD | CRF |
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