Measuring LVEF regularly can show the rate of decline in left ventricle function for a patient with DMD. Therefore, it was selected as an endpoint for this example to measure whether a course of therapy may slow the progression of heart failure for the patient. The second endpoint chosen, NT-proBNP, is a biomarker that may be used to predict or diagnose heart failure.
| Info |
|---|
Ejection Fraction - change in ejection fraction, would expect a decline in EF of 2-3% per year, concerning if rapid progression
, i.e., 10% decline or more - Use absolute change, updated to 5% decline for 1 year
NTproBNP - % change over a period of time – a decrease is correlated with improvement, measured annually
SDTM Examples: Basic Systolic Function |
This section illustrates example analysis datasets for the following endpoints:
- Percent change in ejection fraction over time (1 year)
- Decline in ejection fraction over time (1 year) grouped by a decline greater than 5%-5.0%
- Percent change in NTproBNP NT-proBNP over time (1 year)
Source Data
The SDTM examples used as the source data are from Section 2.1, Basic Systolic Function. The ADSL draws from the DM dataset, which shows 4 subjects. The CV dataset shows two visits for the first subject, DMD-EF-01-101. It contains 16 rows, 1-8 for visit 1 and 9-16 for visit 6. Of these rows, the records in the CV dataset for which CVTESTCD = "LVEF_C" and CVTESTCD = "RVEF_C" representing the Ventricular Ejection Fraction, Calculated (%) for left and right were selected for the analysis. The records in the LB dataset test where LBTESTCD = "BNPPRONT" was used to add the value of BNPPRONT were used to compute the percent change over time , and then was added as a potential covariate in each row for the last analysis. . Both SDTM domains are used in one analysis dataset to demonstrate the flexibility of ADaM and to show that the various SDTM domains can be combined into one dataset both as rows and also as covariates.
Example Analysis Datasets
The following tables below show the analysis dataset metadata and metadata and parameters used for this example.
-
| Definexmltable |
|---|
| Multiple | true |
|---|
| Level | Dataset |
|---|
| Purpose | Analysis |
|---|
|
Dataset Name | Dataset Description | Class of Dataset | Structure | Purpose | Keys | Location | Documentation | Location |
|---|
ADSL | Subject-Level Analysis Dataset | SUBJECT LEVEL ANALYSIS DATASET | One record per subject. | Analysis | USUBJIDADaMIG | adsl.xpt | ADSL.SAS | | ADEFNTP | CV MRI EF and NT-proBNP Analysis | ADCVNTP | Cardiac Ejection Fraction and NTproBNP Analysis Dataset | BASIC DATA STRUCTURE | One record per subject per analysis visit per parameter. | Analysis | USUBJID, AVISITN, PARAMN | | adcvntp.xpt | adefntp.xpt | | | ADEFMRI | CV MRI | ADCVCMR | Cardiovascular CMR Ejection Fraction Analysis Dataset | BASIC DATA STRUCTURE | One record per subject per analysis visit per parameter. | Analysis | USUBJID, AVISITN, PARAMN | | adcvcmr.xpt | adefmri.xpt | |
|
ADSL
The ADSL contains subject characteristics and covariates that are important for analyses. Stratification The ADSL was combined with other SDTM datasets to create the analysis datasets. More than one SDTM dataset can be combined in this way. Also, stratification variables can be created in the ADSL to subset by, or to add variables needed in the analyses. For example, a flag (ACEMEDFL) could be added for ACE inhibitors. Another variable, body surface area (BSASC), the data. More than one SDTM dataset may be used as input to the ADSL. This is a simplified example ADSL dataset; the ADaMIG should be referenced for additional variables.
For this example:
- Analysis age (AAGE) was included to provide age with more precision.
- A flag indicating the use of ACE inhibitors (ACEINHFL) is shown with example derivation from the CM dataset.
- Body surface area at screening (BSASC) was derived from the VS dataset
...
...
...
- . There are many possible calculations for BSA; for this example, the Du Bois method was used.[11] Note that the screening visit and visit 1
...
...
...
The ADCVNTP dataset includes tests pertinent to these analyses. The records from CV where CVTESTCD = "LVEF_C" and "RVEF_C" and the records from LB where LBTESTCD = "BNPPRONT" were selected. Many lab draws may occur throughout the year, but only those linked to a specific visit were included. By subsetting the LB dataset by LBLNKID not missing, laboratory data that aligns with CV data can be filtered out and sorted using USUBJID and VISIT. If LBLNKID is not available, a windowing strategy could be used to select the laboratory draw closest to that visit for merging with CV, computed in AVISIT.
ADCVMR is an efficacy analysis dataset with only a few records for more complex modeling of changes in ejection fraction, plus the ProB-type test results. It is an ADaM Basic Data Structure (BDS) dataset, with additional variables added from ADCVNTP.
ADSL Analysis Dataset
This is a simplified example ADSL dataset; it is expected that additional variables for stratification, or of interest for analysis, would be included. Analysis age was computed from date of birth and The Body Surface Area (BSA) is calculated for screening, and named BSASC as per the ADAMIG v1.2. There are many possible calculations for BSA. For this example, the Du Bois method was used (footnote: https://www.calculator.net/body-surface-area-calculator.html),
...
| Dataset | ADSL |
|---|
| Level | Variable |
|---|
| Purpose | Analysis |
|---|
| Name | Variable |
|---|
...
DM.STUDYID
...
...
DM.AGE
...
DM.AGEU
...
SEX
...
DM.SEX
...
RACE
...
DM.RACE
...
...
...
Planned Treatment for Period 01
...
Actual Treatment for Period 01
...
ITTFL
...
Intent-To-Treat Population Flag
...
Char
...
Y; N
...
ACEINHFL
...
ACE Inhibitor Medications Flag
...
Char
...
Y; N
...
Select a list of ACE inhibitor medications from concomitant medications (CM) domain, and from treatment (EX or EC) domains as per Statistical Analysis Plan or Protocol. Code "Y" if the medication was taken during the study. Can be used to subset or to exclude the population who took ACE inhibitors.
...
HEIGHTSC
...
Height (cm) at Screening
...
Num
...
Set to VS.VSSTRESN where VS.VSTESTCD = "HEIGHT" and VISITNUM= 1 (or screening visit for your study).
...
WEIGHTSC
...
Weight (kg) at Screening
...
Num
...
Set to VS.VSSTRESN where VS.VSTESTCD = "WEIGHT" and VISITNUM = 1 (or screening visit for your study).
...
BSASC
...
Body Surface Area at Screening
...
Num
...
Select where VISITNUM = 1 (or screening visit for your study). Compute from HEIGHT and WEIGHT, using the Du Bois method. BSA = 0.007184 × W0.425 × H0.725
Note that there are multiple methods and the study protocol should describe which one to use (e.g., Du Bois, Mosteller, Haycock, Gehan & George, Boyd, Fujimoto, Takahira, and Schlich).
...
...
...
ADCVNTP Analysis Dataset
In this example, columns for derived variables BASE, CHG, PCHG and CHGCAT1 have been added to facilitate analyses of the efficacy endpoints. Specifically, example demographic data for ADSL were created for an 8 year old male. Also, a custom variable for BSA at baseline (BSABL), and an example of a stratification variable for subjects with was added from ADSL.
...
| Dataset | ADCVNTP |
|---|
| Level | Value |
|---|
| Purpose | Analysis |
|---|
| OID | AVAL |
|---|
...
Categorize the value of CHGCAT1 as follows: If CHG >= 5.00 THEN CHGCAT1 = "Decline >=5%".
Else if CHG not missing and CHG < 5.00 THEN CHGCAT1 = "Decline <5%"
...
Categorize the value of CHCAT1 as follows:"Increase >100 pg/mL", "Increase <=100 pg/mL" "No increase"
...
| Dataset | ADCVNTP |
|---|
| Level | Variable |
|---|
| Purpose | Analysis |
|---|
| Name | Variable |
|---|
...
CV.STUDYID
...
...
ADSL.BRTHDT
...
ADSL.AAGE
...
ADSL.AGEU
...
Planned Treatment for Period 01
...
ITTFL
...
Intent-To-Treat Population Flag
...
Char
...
Y; N
...
ADSL.ITTFL
...
HEIGHT
...
Height (cm)
...
Num
...
Set to VS.VSSTRESN where VS.VSTEST = "HEIGHT" and merge by visit.
...
WEIGHT
...
Weight (kg)
...
Num
...
Set to VS.VSSTRESN where VS.VSTEST = "WEIGHT" and merge by visit.
...
ADSL.BSASC
...
Compute from HEIGHT and WEIGHT at each visit, using the Du Bois method. BSA = 0.007184 × W0.425 × H0.725
Note that there are multiple methods and the study protocol should describe which one to use (e.g., Mosteller, Haycock, Gehan & George, Boyd, Fujimoto, Takahira, and Schlich).
| Definexmltable |
|---|
| Dataset | ADSL |
|---|
| Level | Variable |
|---|
| Purpose | Analysis |
|---|
| Name | Variable |
|---|
|
| Variable Name | Variable Label | Type | Codelist/Controlled Terms | Source/Derivation/Comment |
|---|
| STUDYID | Study Identifier | text |
| Predecessor: DM.STUDYID | | USUBJID | Unique Subject Identifier | text |
| Predecessor: DM.USUBJID | | BRTHDT | Date of Birth | integer | yymmdd10. | Derived: Date portion of DM.BRTHDTC converted to numeric and displayed in a format, such as yymmdd10. | | AAGE | Analysis Age | float |
| Derived: Age as screening, computed by DM.RFICDTC - BRTHDTC as continuous variable. Note that some countries do not allow capturing date of birth, so this could be computed by capturing age in years and months on a CRF. | | AGE | Age | integer |
| Predecessor: DM.AGE | | AGEU | Age Units | text | YEARS | Predecessor: DM.AGEU | SEX | Sex | text | (SEX) | Predecessor: DM.SEX | RACE | Race | text | (RACE) | Predecessor: DM.RACE | | TRTSDT | Date of First Exposure to Treatment | integer | yymmdd10. | Derived: Date portion of DM.RFSTDTC converted to numeric and displayed in a format such as yymmdd10. | | RFICDT | | integer | yymmdd10. | Derived: Date portion of DM.RFICDTC converted to numeric and displayed in a format such as yymmdd10. | | DTHDT | | integer | yymmdd10. | Derived: Date portion of DM.DTHDT converted to numeric and displayed in a format such as yymmdd10. | | DTHFL | | text | Y | Predecessor: DM.DTHFL | | TRT01P | Planned Treatment for Period 01 | text | Drug A; Drug B | Predecessor: DM.ARM. May be changed to lower case or more descriptive term for use in tables and listings. | | TRT01A | Actual Treatment for Period 01 | text | Drug A; Drug B | Predecessor: DM.ACTARM. Note: Actual treatment matches planned treatment unless there is a reason subject does not take planned drug. | ITTFL | Intent-To-Treat Population Flag | text | Y; N | Derived: Derive the intent-to-treat population as per the protocol and SAP. | ACEINHFL | ACE Inhibitor Medications Flag | text | Y; N | Derived: Select a list of ACE inhibitor medications from concomitant medications (CM) domain as per SAP or protocol. Set to "Y" if these medications were taken during the study, and "N" if they are absent. Can be used to subset or to exclude the population who took ACE inhibitors. | HEIGHTSC | Height (cm) at Screening | float |
| Predecessor: Set to VS.VSSTRESN where VS.VSTESTCD = "HEIGHT" and VISITNUM= 1 (or screening visit). | WEIGHTSC | Weight (kg) at Screening | float |
| Predecessor: Set to VS.VSSTRESN where VS.VSTESTCD = "WEIGHT" and VISITNUM = 1 (or screening visit). | BSASC | Body Surface Area at Screening | float |
| Derived: Select where VISITNUM = 1 (or screening visit). Compute from HEIGHT and WEIGHT, using the Du Bois method. BSA = 0.007184 × W0.425 × H0.725 There are multiple methods for calculating BSA (e.g., Du Bois, Mosteller, Haycock, Gehan & George, Boyd, Fujimoto, Takahira, Schlich); the study protocol should describe which to use. |
|
| Dataset wrap |
|---|
|
| Dataset2 |
|---|
| | Row | STUDYID | USUBJID | BRTHDT | AAGE | AGE | AGEU | SEX | RACE | TRTSDT | RFICDT | DTHDT | DTHFL | TRT01P | ITTFL | ACEINHFL | HEIGHTSC | WEIGHTSC | BSASC |
|---|
| 1 | DMD-EFLGE | DMD-EF-01-101 | 2010-02-07 | 12.3 | 12 | YEARS | M | BLACK OR AFRICAN AMERICAN | 2022-06-16 | 2022-06-16 |
|
| Drug A | Y | Y | 119 | 20 | 0.82 | | 2 | DMD-EFLGE | DMD-EF-01-101 | 2008-05-01 | 14.1 | 14 | YEARS | M | ASIAN | 2022-06-13 | 2022-06-13 |
|
| Drug A | Y | Y | 115 | 30 | 0.95 | | 3 | DMD-EFLGE | DMD-EF-01-101 | 2003-07-10 | 19.0 | 19 | YEARS | M | NATIVE HAWAIIAN OR OTHER PACIFIC ISLANDER | | 2022-07-15 |
|
| Drug B | Y | N | 140 | 45 | 1.30 | | 4 | DMD-EFLGE | DMD-EF-01-101 | 1999-01-15 | 23.7 | 23 | YEARS | M | WHITE | 2022-09-06 | 2022-09-06 | 2023-11-23 | Y | Drug B | Y | Y | 132 | 42 | 1.21 |
|
|
ADEFNTP
The ADEFNTP includes tests pertinent to analyses. The records from CV (CVTESTCD = "LVEF_C" and "RVEF_C") and the records from LB (LBTESTCD = "BNPPRONT") were selected. Many lab draws may occur throughout the year, but only those linked to a specific visit were included. By subsetting the LB dataset by LBLNKID not missing, laboratory data that aligns with CV data can be filtered out and sorted using USUBJID and VISIT. If LBLNKID is not available or the LB dataset does not contain VISIT, a windowing strategy could be used to select the laboratory draw closest to that visit using date of lab draw (LB.LBDTC.).
| Jira |
|---|
| showSummary | false |
|---|
| server | Issue Tracker (JIRA) |
|---|
| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
|---|
| key | TAUGDMDCIS-8 |
|---|
|
| Definexmltable |
|---|
| Dataset | ADEFNTP |
|---|
| Level | Variable |
|---|
| Purpose | Analysis |
|---|
| Name | Variable |
|---|
|
| Variable Name | Variable Label | Type | Codelist/Controlled Terms | Source/Derivation/Comment |
|---|
| STUDYID | Study Identifier | text |
| Predecessor: CV.STUDYID | | USUBJID | Unique Subject Identifier | text |
| Predecessor: CV.USUBJID | | BRTHDT | Date of Birth | integer | yymmdd10. | Predecessor: ADSL.BRTHDT | | AAGE | Analysis Age | float |
| Predecessor: ADSL.AAGE | | AGEU | Age Unit | text |
|
Predecessor: ADSL.AGEU | SEX | Sex | text | (SEX) | | RACE | Race | text | (RACE) | Predecessor: ADSL.RACE | | TRTSDT | Date of First Exposure to Treatment | integer | yymmdd10. | Predecessor: ADSL.TRTSDT | | TRT01P | Planned Treatment for Period 01 | text | Drug A; Drug B | Predecessor: ADSL.TRT01P | | TRT01A | Actual Treatment for Period 01 | text | Drug A; Drug B | Predecessor: ADSL.TRT01A | ITTFL | Intent-To-Treat Population Flag | text | Y; N | | HEIGHT | Height (cm) | float |
| Set to VS.VSSTRESN where VS.VSTEST = "HEIGHT" by visit. | WEIGHT | Weight (kg) | float |
| Set to VS.VSSTRESN where VS.VSTEST = "WEIGHT" by visit. | | BSA | Body Surface Area (m2) | float |
| Derived: Compute from HEIGHT and WEIGHT at each visit, using the Du Bois method. BSA = 0.007184 × W0.425 × H0.725 There are multiple methods for calculating BSA; the study protocol should describe which to use. | ACEINHFL | ACE Inhibitor Medications Flag | text | Y; N | Predecessor: ADSL.ACEINHFL | | PARAM | Parameter | text | Left Ventricular Ejection Fraction, Cal (%); Right Ventricular Ejection Fraction, Cal (%); N-Terminal ProB-type Natriuretic Peptide (ng/L) | Predecessor: CV.CVTEST LB.LBTEST | | PARAMCD | Parameter Code | text | LVEF_C; RVEF_C; BNPPRONT | Predecessor: CV.CVTESTCD LB.LBTESTCD | | PARAMN | Parameter (N) | integer | 1; 2; 3 | Assigned: Number PARAMCD as follows: LVEF_C = "1" RVEF_C = "2" BNPPRONT = "3" | | AVAL | Analysis Value | float |
| See Parameter Value Metadata | | AVISIT | Analysis Visit | text | Visit 1 (Baseline); Visit 6 (1 Year) | If CV.VISIT = "VISIT 1" then AVISIT = "Visit 1 (Baseline)". If CV.VISIT = "VISIT 6" then AVISIT = "Visit 6 (1 Year)". | | AVISITN | Analysis Visit (N) | integer | 1; 6 | Predecessor: CV.VISITNUM LB.VISITNUM | | VISIT | Visit | integer | VISIT 1; VISIT 6 | Predecessor: CV.VISIT LB.VISIT | | ADT | Analysis Date | integer | yymmdd10. | Date portion of CV.CVDTC or LB.LBDTC converted to numeric and displayed in a format such as yymmdd10. | | ABLFL | Baseline Record Flag | text | Y | Derived: If CV.VISIT = "VISIT 1" then ABLFL = "Y". | | BASE | Baseline Value | float |
| Derived: Set BASE to AVAL from the record for that subject and parameter where ABLFL = "Y". Populate BASE for additional visits by merging the value of BASE in the baseline record by USUBJID and PARAMCD. | | CHG | Change from Baseline | float |
| Derived: Compute CHG = AVAL - BASE for that record. Only compute for post-baseline records. | | PCHG | Percent Change from Baseline | float |
| Derived: Compute PCHG = (CHG / BASE) * 100. Only compute for post-baseline records. | | CHGCAT1 | Change from Baseline Category 1 | text | Decline >=-5.0%; Decline <-5.0%; No Decline | See Parameter Value Metadata | | SRCDOM | Source Data | text | CV; LB | Assigned: Set to the SDTM domain name that relates to the analysis value. | | SRCVAR | Source Variable | text | CVSTRESN; LBSTRESN | Assigned: Set to the SDTM variable that relates to the analysis value. | | SRCSEQ | Source Sequence Number | integer |
| Predecessor: Set to the SDTM domain sequence number that relates to the analysis value, CV.CVSEQ or LB.LBSEQ. |
|
In this example, variables BASE, CHG, PCHG, and CHGCAT1 were added to facilitate analyses of the efficacy endpoints. the variables SRCDOM, SRCVAR, and SRCSEQ provide traceability to the combined source datasets. The tables below represent parameter value level lists for applicable variables.
| Definexmltable |
|---|
| Dataset | ADEFNTP |
|---|
| Example | true |
|---|
| Level | Codelist |
|---|
| Purpose | Analysis |
|---|
| OID | PARAM.ADEFNTP |
|---|
| Name | Parameter |
|---|
|
| Permitted Value (code) |
|---|
Left Ventricular Ejection Fraction, Cal (%) | | Right Ventricular Ejection Fraction, Cal (%) | | N-Terminal ProB-type Natriuretic Peptide (ng/L) |
|
| Definexmltable |
|---|
| Dataset | ADEFNTP |
|---|
| Example | true |
|---|
| Level | Codelist |
|---|
| Purpose | Analysis |
|---|
| OID | PARAMCD.ADEFNTP |
|---|
| Name | Parameter Code |
|---|
|
| Permitted Value (code) | Display Value (Decode) |
|---|
LVEF_C | Left Ventricular Ejection Fraction, Cal (%) | | RVEF_C | Right Ventricular Ejection Fraction, Cal (%) | | BNPPRONT | N-Terminal ProB-type Natriuretic Peptide (ng/L) |
|
| Definexmltable |
|---|
| Dataset | ADEFNTP |
|---|
| Level | Value |
|---|
| Purpose | Analysis |
|---|
| Name | AVAL |
|---|
|
| Variable | Where | Type | Controlled Terms or Format | Origin | Derivation/Comment |
|---|
| AVAL | CV.CVSTRESN in ("LVEF_C", "RVEF_C") | float |
| Predecessor | CV.CVSTRESN | | AVAL | LB.LBTESTCD = "BNPPRONT" | float |
| Predecessor | LB.LBSTRESN |
|
In this table the ADaM parameters are used rather than the source SDTM data.
| Definexmltable |
|---|
| Dataset | ADEFNTP |
|---|
| Level | Value |
|---|
| Purpose | Analysis |
|---|
| Name | CHGCAT1 |
|---|
|
| Variable | Where | Type | Controlled Terms or Format | Origin | Derivation/Comment |
|---|
| CHGCAT1 | PARAMCD in ("LVEF_C", "RVEF_C") | text | Decline >=-5.0%; Decline <-5.0%; No Decline | Derived | Categorize the value of CHG as follows: If CHG >= 5.00 THEN CHGCAT1 = "Decline >=-5.0%". | Jira |
|---|
| showSummary | false |
|---|
| server | Issue Tracker (JIRA) |
|---|
| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
|---|
| key | TAUGDMDCIS-9 |
|---|
|
Else if CHG GT 0 and CHG < 5.00 THEN CHGCAT1 = "Decline <-5.0%" Else if CHG <0 then CHGCAT1 = "No Decline" | Jira |
|---|
| showSummary | false |
|---|
| server | Issue Tracker (JIRA) |
|---|
| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
|---|
| key | TAUGDMDCIS-10 |
|---|
|
| | CHGCAT1 | PARAMCD = "BNPPRONT" | text | Increase >100 ng/L; Increase <=100 ng/L; No Increase | Derived | Categorize the value of CHCAT1 as follows: "Increase >100 ng/L"; "Increase <=100 ng/L"; "No Increase" | Jira |
|---|
| showSummary | false |
|---|
| server | Issue Tracker (JIRA) |
|---|
| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
|---|
| key | TAUGDMDCIS-11 |
|---|
|
|
|
| Dataset wrap |
|---|
|
| Dataset2 |
|---|
| | Row | STUDYID | USUBJID | AAGE | AGEU | SEX | RACE | TRT01P | TRT01A | ITTFL | HEIGHT | WEIGHT | BSA | ACEINHFL | PARAM | PARAMCD | PARAMN | AVAL | AVISIT | AVISITN | VISIT | ADT | ABLFL | BASE | CHG | PCHG | CHGCAT1 | SRCDOM | SRCVAR | SRCSEQ |
|---|
| 1 | DMD-EFLGE | DMD-EF-01-101 | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Drug A | Y | 119 | 20 | 0.82 | Y | Left Ventricular Ejection Fraction, Cal (%) | LVEF_C | 1 | 67 | Visit 1 (Baseline) | 1 | VISIT 1 | 2022-05-16 | Y | 67 |
|
|
| CV | CVTESTCD| Jira |
|---|
| showSummary | false |
|---|
| server | Issue Tracker (JIRA) |
|---|
| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
|---|
| key | TAUGDMDCIS-13 |
|---|
|
| 3 | | 2 |
|
|
...
ACEINHFL
...
ACE Inhibitor Medications Flag
...
Char
...
Y; N
...
ADSL.ACEINHFL
...
Left Ventricular Ejection Fraction, Calculated (%);
Right Ventricular Ejection Fraction, Calculated (%);
N-Terminal ProB-type Natriuretic Peptide (pg/mL)
...
For tests from CV, set to the values of CV.CVTEST plus CV.CVTESTU with spaces and parentheses as shown.
For tests from LB, set to the value of LB.LBTEST plus LB.LBTESTU with spaces and parentheses as shown.
...
LVEF_C;
RVEF_C;
BNPPRONT
...
If CV.CVTESTCD = "LVEF_C" then PARAMCD = "LVEF_C"
If CV.CVTESTCD = "RVEF_C" then PARAMCD = "RVEF_C"
If LB.LBTESTDC = "BNPPRONT" then PARAMCD = "BNPPRONT"
Note: for this example dataset, select the records where the test values shown above are included.
...
Number PARAMCD as follows:
LVEF_C = "1"
RVEF_C = "2"
BNPPRONT = "3"
...
See Parameter Value List
...
Visit 1 (Baseline)
Visit 6 (1 Year)
...
If CV.VISIT = "VISIT 1" then AVISIT = "Visit 1 (Baseline)".
Else if CV.VISIT = "VISIT 6" then AVISIT = "Visit 6 (1 Year)".
...
CV.VISITNUM
LB.VISITNUM
...
VISIT 1
VISIT 6
...
CV.VISIT
LB.VISIT
...
If CV.VISIT = "VISIT 1" then ABLFL = "Y".
...
Set BASE to AVAL from the record for that subject and parameter where ABLFL = "Y".
Populate BASE for additional visits by merging the value of BASE in the baseline record by USUBJID and PARAMCD.
...
Decline >=5% ; Decline <5%
Increase GT 100 pg/mL
...
CV; LB
...
CV.CVSEQ
LB.LBSEQ
...
Example 1
This example dataset shows the findings and additional analysis variables associated with:
- Left Ventricular Ejection Fraction, Calculated (%)
- Right Ventricular Ejection Fraction, Calculated (%)
- N-Terminal ProB-type Natriuretic Peptide (pg/mL)
| Dataset wrap |
|---|
|
| Rowcaps |
|---|
| Rows 1-2: | Show the baseline ejection fraction measurements at VISIT 1. | | Row 3: | Shows the baseline N-Terminal ProB-type Natriuretic Peptide test results at VISIT 1. | | Rows 4-5: | Show the baseline ejection fraction measurements at VISIT 6. | | Row 6: | Shows the baseline N-Terminal ProB-type Natriuretic Peptide test results at VISIT 6. | | Dataset2 |
|---|
| | Row | STUDYID | USUBJID | BRTHDT | TRT01P | ITTFL | HEIGHT | WEIGHT | BSA | ACEINHFL | PARAM | PARAMCD | PARAMN | AVAL | AVISIT | AVISITN | VISIT | ADT | ABLFL | BASE | CHG | PCHG | CHGCAT1 | SRCDOM | SRCSEQ |
|---|
107FEB2010 | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Drug A | Y | 119 | 20 |
109Left | Right Ventricular Ejection Fraction, |
Calculated LVEF167| 74 | Visit 1 (Baseline) | 1 | VISIT |
116MAY2022 | 672 | 07FEB2010| 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Drug A | Y | 119 | 20 |
109Right Ventricular Ejection Fraction, Calculated (%) | RVEF_C | 2 | | N-Terminal ProB-type Natriuretic Peptide (ng/L) | BNPPRONT | 3 | 40 |
74)16MAY202274CV7307FEB2010 | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Drug A | Y |
1192009N-Terminal ProB-type Natriuretic Peptide (IU/L) | BNPPRONT | 3 | 40 | Visit 1 (Baseline) | 1 | VISIT 1 | 16MAY2022 | Y | 40 | LB | 1 | | Left Ventricular Ejection Fraction, Cal (%) | LVEF_C | 1 | 60 | Visit 6 (1 Year) | 6 | VISIT 6 | 2023-04-23 |
| 67 | -7 | -10.447761 | Decline >=-5.0% | CV | CVTESTCD | 11 | | 5 |
407FEB2010 | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Drug A | Y | 132 | 32 | 1. |
33Left | Right Ventricular Ejection Fraction, |
Calculated LVEF160| 61 | Visit 6 (1 Year) | 6 | VISIT 6 |
06APR2023 | 6771044776111507FEB2010 | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Drug A | Y | 132 | 32 | 1. |
33Right Ventricular Ejection Fraction, Calculated (%) | RVEF_C | 2 | N-Terminal ProB-type Natriuretic Peptide (ng/L) | BNPPRONT | 3 | 900 |
6106APR2023 | 74 | -13 | -17.567568 | Decline >=5.0% | CV | 15 | 6 | DMD-EFLGE | DMD-EF-01-101 | 07FEB2010 | Drug A | Y | 132 | 32 | 1.33 | Y | N-Terminal ProB-type Natriuretic Peptide (IU/L) | BNPPRONT | 3 | 900 | Visit 6 (1 Year) | 6 | VISIT 1 | 06APR2023 | 40 | 860 | 2,150 | Increase GT 100 pg/mL | LB | 2 | |
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ADCVCMR Analysis Dataset
Example 2
The dataset above can also be set up to provide multivariate analyses by taking the lab tests of interest, transposing and merging with the ADCVNTP dataset. In that case, the records from LB are not needed as a row. The stratification variables such as BSA and ACEINHFL are carried over, but not HEIGHTW or WEIGHTW which were used to compute BSA values.
/* remove this table and make sure description is above */
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| Dataset | ADCVCMR |
|---|
| Level | Value |
|---|
| Purpose | Analysis |
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| OID | AVAL |
|---|
...
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Example Analysis Results Metadata (ARM) Tables
For more details on ARM, see the ADaMIG and the Analysis Results Metadata (ARM) v1.0 for Define-XML v2.0 (https://www.cdisc.org/standards/foundational/adam).
Table 1. A simple comparison of change by treatment groups over one year.
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Display
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Table 14.xx.xx Change in Left Ventricular Ejection Fraction Percent Over 1 Year
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Data References
(incl. selection criteria)
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PARAMCD = "LVEF_C"
Where ITTFL = "Y" and AVISITN = 6;
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Comparison of Means with 95% confidence interval
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Programming Statements
(Add programming language statements here: SAS, R, etc.)
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/* Subset the data. Can run again selecting for paramcd="RVEF_C"*/
DATA ONE;
SET ADCVCMR;
Where ITTFL = "Y" and AVISITN = 6 and PARAMCD = 'LVEF_C';
RUN;
PROC MEANS DATA=ONE N MEAN clm STDERR;
CLASS TRT01P;
VAR CHG;
RUN;
Table 2. This table demonstrates a model over multiple time points, adding some of the covariates that were retained in the analysis dataset.
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Display
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Table 14.xx.xx Percent Change in Left Ventricular Ejection Fraction Percent Over Time (Yearly)
| 2023-04-23 |
| 40 | 860 | 2,150 | Increase >100 ng/L | LB | LBTESTCD | 2 |
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ADEFMRI
The ADEFMRI is an efficacy analysis dataset with only a few records for more complex modeling of changes in ejection fraction, plus the proB-type test results. It is an ADaM Basic Data Structure (BDS) dataset| Jira |
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| showSummary | false |
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| server | Issue Tracker (JIRA) |
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| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
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| key | TAUGDMDCIS-15 |
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, with additional variables added from ADEFNTP dataset.
The dataset can can be used for analyses with multiple covariates
| Jira |
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| showSummary | false |
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| server | Issue Tracker (JIRA) |
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| serverId | 85506ce4-3cb3-3d91-85ee-f633aaaf4a45 |
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| key | TAUGDMDCIS-14 |
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by taking the lab tests of interest (PARAMCD = "BNPPRONT") or other analysis datasets, and merging variables of interest with the ADEFNTP dataset. This summary dataset is created from other ADaM datasets and only variables used in the analysis are kept.| Definexmltable |
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| Dataset | ADEFMRI |
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| Level | Variable |
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| Purpose | Analysis |
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| Name | Variable |
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| Variable Name | Variable Label | Type | Codelist/Controlled Terms | Source/Derivation/Comment |
|---|
| STUDYID | Study Identifier | text |
| Predecessor: ADEFNTP.STUDYID | | USUBJID | Unique Subject Identifier | text |
| Predecessor: ADEFNTP.USUBJID | | BRTHDT | Date of Birth | integer | yymmdd10. | Predecessor: ADEFNTP.BRTHDT | | AAGE | Analysis Age | float |
| Predecessor: ADEFNTP.AAGE | | AGEU | Age Unit | text | YEARS | Predecessor: ADEFNTP.AGEU | SEX | Sex | text | (SEX) | Predecessor: ADEFNTP.SEX | RACE | Race | text | (RACE) | Predecessor: ADEFNTP.RACE | | TRTSDT | Date of First Exposure to Treatment | Num | yymmdd10. | Predecessor: ADEFNTP.TRTSDT | | TRT01P | Planned Treatment for Period 01 | text | Drug A; Drug B | Predecessor: ADEFNTP.TRT01P | ITTFL | Intent-To-Treat Population Flag | text | Y; N | Predecessor: ADEFNTP.ITTFL | | BSA | Body Surface Area (m2) | float |
| Predecessor: ADEFNTP.BSA | ACEINHFL | ACE Inhibitor Medications Flag | text | Y; N | Predecessor: ADEFNTP.ACEINHFL | BNPPRONT |
| integer |
| Derived: BNPPRONT = AVAL where PARAMCD = ADEFNTP.BNPPRONT, and merge by USUBJID and AVISITN. Note: There are many ways to add this including transposing the data. | | PARAM | Parameter | text | Left Ventricular Ejection Fraction, Cal (%); Right Ventricular Ejection Fraction, Cal (%) | Predecessor: ADEFNTP.PARAM | | PARAMCD | Parameter Code | text | LVEF_C; RVEF_C | Predecessor: ADEFNTP.PARAMCD | | PARAMN | Parameter (N) | integer |
| Predecessor: ADEFNTP.PARAMN | | AVAL | Analysis Value | float |
| Predecessor: ADEFNTP.AVAL | | AVISIT | Analysis Visit | text | Visit 1 (Baseline); Visit 6 (1 Year) | Predecessor: ADEFNTP.AVISIT | | AVISITN | Analysis Visit (N) | integer | 1; 6 | Predecessor: ADEFNTP.AVISITN | | ADT | Analysis Date | float | yymmdd10. | Predecessor: ADEFNTP.ADT | | ABLFL | Baseline Record Flag | text | Y | Predecessor: ADEFNTP.ABLFL | | BASE | Baseline Value | float |
| Predecessor: ADEFNTP.BASE | | CHG | Change from Baseline | float |
| Predecessor: ADEFNTP.CHG | | PCHG | Percent Change from Baseline | float |
| Predecessor: ADEFNTP.PCHG | | CHGCAT1 | Change from Baseline Category 1 | text | Decline >=5.0%; Decline <-5.0%; Increase >100 ng/L | Predecessor: ADEFNTP.CHGCAT1 |
|
| Dataset wrap |
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|
| Dataset2 |
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| | Row | STUDYID | USUBJID | BRTHDT | TRT01P | AAGE | AGU | SEX | RACE | TRT01A | ITTFL | BSA | ACEINHFL | BNPPRONT | PARAM | PARAMCD | PARAMN | AVAL | AVISIT | AVISITN | ADT | ABLFL | BASE | CHG | PCHG | CHGCAT1 |
|---|
| 1 | DMD-EFLGE | DMD-EF-01-101 | 2010-02-07 | Drug A | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Y | 0.82 | Y | 40 | Left Ventricular Ejection Fraction, Cal (%) | LVEF_C | 1 | 70 | Visit 1 (Baseline) | 1 | 2022-05-16 | Y | 70 |
|
|
| | 2 | DMD-EFLGE | DMD-EF-01-101 | 2010-02-07 | Drug A | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Y | 0.82 | Y | 40 | Right Ventricular Ejection Fraction, Cal (%) | RVEF_C | 2 | 75 | Visit 1 (Baseline) | 1 | 2022-05-16 | Y | 75 |
|
|
| | 3 | DMD-EFLGE | DMD-EF-01-101 | 2010-02-07 | Drug A | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Y | 1.08 | Y | 900 | Left Ventricular Ejection Fraction, Cal (%) | LVEF_C | 1 | 65 | Visit 6 (1 Year) | 6 | 2023-04-23 |
| 70 | -5 | -10.447761 | Decline >==5.0% | | 4 | DMD-EFLGE | DMD-EF-01-101 | 2010-02-07 | Drug A | 12.3 | YEARS | M | BLACK OR AFRICAN AMERICAN | Drug A | Y | 1.08 | Y | 900 | Right Ventricular Ejection Fraction, Cal (%) | RVEF_C | 2 | 70 | Visit 6 (1 Year) | 6 | 2023-04-23 |
| 75 | -5 | -17.567568 | Decline >==5.0% |
|
|
...
Data References
(incl. selection criteria)
...
PARAMCD = "LVEF_C"
Where ITTFL = "Y"
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The mixed model using lsmeans to compare treatment groups
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Programming Statements
(Add programming language statements here: SAS, R, etc.)
/* Note that CHG is only computed post-baseline, so subset for the yearly visits, i.e. 6, 12, 18 etc. */
DATA TWO;
SET ADCVCMR;
/* Subset by param, as there are two parameters with CHG calculated*/
Where ITTFL = "Y" and AVISITN IN(6,12,18,24,36,48) and PARAMCD = "LVEF_C";
RUN;
PROC MIXED DATA=ADCVNTP;
CLASS STUYDID TRT01P AVISITN;
MODEL PCHG=AVISITN*TRT01P/Solution;
RANDOM INTERCEPT / SUBJECT=STUYDID TYPE=UN;
LSMEANS TRT01P*AVISITN/ CL PDIFF;
RUN;
Table 3. This example uses the dataset ADCVNTP, selecting for the parameter "N-Terminal ProB-type Natriuretic Peptide (IU/L)".
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Display
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Table 14.xx.xx Percent change in NTproBNP over 1 Year
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Data References
(incl. selection criteria)
...
PARAMCD = "BNPPRONT"
Where ITTFL = "Y" AND AVISIT GE 6;
...
The mixed model using lsmeans to compare treatment groups
...
Programming Statements
(Add programming language statements here: SAS, R, etc.)
/* NEEDS UPDATING*/
PROC MEANS DATA=ADCVCMR MEAN STD MEDIAN maxdec=3;
CLASS TRT01P;
BY VISIT;
VAR BNPPRONT;
...