McFarland DJ, Cacace AT.
Covariance is the proper measure of test-retest reliability. Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology [Internet]. 2011;122:1893; author reply 1893–1893; author reply 1895.
http://www.ncbi.nlm.nih.gov/pubmed/21414840 Covariance is the proper measure of test-retest reliability.pdf (38.82 KB)