Internal consistency reliability: The extent to which the items contribute to measuring the same construct (a reliability coefficient is calculated).
Internal consistency reliability, the extent to which items within each scale correlate with each other to form a multi-item scale, was assessed using Cronbach's alpha [ 25, 27].
Test-retest reliability: The extent to which scores remain stable over time when no change has occurred (i.e. when there has been no change in vision, no treatment for MD or rehabilitation).
Test-retest reliability (the extent to which survey results were similar under different conditions or periods of time) was measured by repeating the survey in patients and surrogates 24 hours after the initial survey.
The first concerns reliability and "the extent to which the judgements made independently by two observers who see the same lesson would agree".
To some extent, reliability is kind of a price venture.
Inter-rater reliability is the extent to which two or more raters measuring the same phenomenon agree in their ratings.
Reliability concerns the extent to which an experience, test, or any measuring procedure yields the same results on repeated trials (Carmines and Zeller 1979).
Reliability is the extent to which scores for a patient whose problems have not changed are the same for repeated measurement [16].
