Certain data element fields have a "defined dictionary", or limited vocabulary of data entry terms.
A number of data element fields are related to chromosome, or genetic location.
A second set of data element fields relates to experimental methodology: Method of Analysis, Type of Genetic Aberration, Evidence of Linkage, Subset Totals, Materials and Material Source.
Alice holds a data collection (database), A, which contains one or more attributes (also often referred to as data elements, variables, fields or columns), denoted A.a, A.b and so on, each, containing confidential character strings (such as names) or some other sequences or values.
The valid field options for each data element are defined in the CDE description.
In the records which were standardised incorrectly, not every data element was assigned to the wrong output field.
The valid field options, defined for each data element in the CDE dictionary, are checked using these automated QA measures.
Paramedic documentation of clinical features was inconsistent, with data elements recorded in varying fields, including the 'free text' field, and some data elements were not recorded.> The frequency of contractions was recorded in 1405 patient records, with 767 (55%) and 638 (45%) classified as being in established labour early labour respectively.
For example, there is a non-mandatory "Group/Cohort" field in the registry clinicaltrials.gov that could be used for subgroup prespecification, but the corresponding data element description remains unclear.
