Development of a unidimensional composite measure of neuropsychological functioning in older cardiac surgery patients with good measurement precision.
The objective of this analysis was to develop a measure of neuropsychological performance for cardiac surgery and to assess its psychometric properties. Older patients (n = 210) underwent a neuropsychological battery using nine assessments. The number of factors was identified with variable reduction methods. Factor analysis methods based on item response theory were used to evaluate the measure. Modified parallel analysis supported a single factor, and the battery formed an internally consistent set (coefficient alpha = .82). The developed measure provided a reliable, continuous measure (reliability > .90) across a broad range of performance (-1.5 SDs to +1.0 SDs) with minimal ceiling and floor effects.
Jones
Richard N
RN
Institute for Aging Research, Hebrew SeniorLife, Boston, MA, USA.
Rudolph
James L
JL
Inouye
Sharon K
SK
Yang
Frances M
FM
Fong
Tamara G
TG
Milberg
William P
WP
Tommet
Douglas
D
Metzger
Eran D
ED
Cupples
L Adrienne
LA
Marcantonio
Edward R
ER
D000368:Aged; D000369:Aged, 80 and over; D006348:Cardiac Surgical Procedures / Q000523:psychology*; D001026:Coronary Artery Bypass / Q000523:psychology; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D015233:Models, Statistical; D009483:Neuropsychological Tests; D011446:Prospective Studies; D011594:Psychometrics; D015203:Reproducibility of Results; D011795:Surveys and Questionnaires
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