• We are sorry, but NCBI web applications do not support your browser and may not function properly. More information

Table 9Classification of the level of compatibility between assessment items and DataSchema variables

Class*Description
CompleteAccording to the pairing rules, the meaning, format or standard operating procedures used for collection of the assessment items allow construction of the variable as defined.
PartialAccording to the pairing rules, the meaning, format or standard operating procedures used for collection of the assessment items allow the construction of the variable as defined, but with an unavoidable loss of information. This class includes two subcategories:
Proximate: if the only reason for the classification as partial is because categories are used to collect information for a DataSchema variable that is defined as continuous.
Tentative: whenever a variable is classified as partial for any other reason.
ImpossibleIf no relevant information is collected (Impossible Not Covered) or, based on the pairing rules, insufficient information exists to construct the variable as defined (Impossible Covered).
*

In certain instances, a DataSchema variable is not pertinent in the context of a particular study (e.g., the ‘occurrence of prostate cancer’ variable in the context of a study recruiting only women). In such cases, the variable is classified as “not applicable” for that study.

In certain instances, a DataSchema variable is not pertinent in the context of a particular study (e.g., the ‘occurrence of prostate cancer’ variable in the context of a study recruiting only women). In such cases, the variable is classified as “not applicable” for that study.

From: Methods and Results: Process of Preparing Data for Statistical Harmonization (Objective 2)

Cover of Harmonization of Cognitive Measures in Individual Participant Data and Aggregate Data Meta-Analysis
Harmonization of Cognitive Measures in Individual Participant Data and Aggregate Data Meta-Analysis [Internet].
Griffith L, van den Heuvel E, Fortier I, et al.

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.