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Wednesday 11 June 2014

TYPES OF CONTROLLED TERMINOLOGY(CT) IN CDISC SDTM

  •  Single asterisk(*) – Specifies there is no CT currently, sponsor defines their own CT while CDISC team may be developing one
         Ex: Variables in DM domain

Variable name
Label
Type
Controlled terminology
Role
ARMCD
Planned arm code
Char
*
Record qualifier
ARM
Description of planned arm
Char
*
Record qualifier


 
  • List of controlled terms for the variable when the values are not maintained externally
  •    Hyperlinks provide values to external codelist specified in domain or appendix
Codelist short name
Description
SDTM variable
Comments
ACN
Action taken with study treatment
--ACN
www.cancer.gov/cancertopics/terminology resources/CDISC
AGEU
Age Unit
AGEU
www.cancer.gov/cancertopics/terminology resources/CDISC
         
         ·        ISO 8601 format to represent date/time variables
       Ex:

Date/time originally recorded
Precision
ISO 8601 format
March 15,2005 14:14:17
Complete date/time
2005-03-15T14:14:17
March 15,2005 14:14
Unknown seconds
2005-03-15T14:14
March 15,2005
Unknown hrs and minutes
2005-03-15
March 15,2005 14:??:17
Unknown minutes with known date, hrs and seconds
2005-03-15T14:-:17(missing value represented by (-))
15,2005
Unknown month
2005---15
5:15 of some unknown date
Unknown date with known hour and minute
-----T05:15


 ·        To represent interval of uncertainity

Interval of uncertainity
ISO8601 format
B/w 9:00 & 9:30 on morning of Nov 15,2005
2005-11-15T09:00/[S1] 2005-11-15T09:30
Sometime in first half of 2005
2005-01-01/2005-06-30






 [S1]To separate components in representation of date/time intervals


  • ISO 8601 duration formats

Duration is the quantity  of time i.e equal to the difference b/w time points(-STDTC &-ENDTC).Can be represented in the following ways
PnYnMnDTnHnMnS or PnW


Duration originally recorded
ISO 8601 duration
2years
P2Y
10 weeks
P10W
3months 14days
P3M14D
3days
P3D
6months17days 3hrs
P6M17DT3H
14days7hours57minutes
P14DT7H57M
4 1/2weeks
P4.5W