Year: 1992
Type: letter
Abstract: repeatability of only one scale point on a range 0-100, which seems unlikely for a score derived from responses to questions concerning subjective symptoms.They say they have used the method of Bland and Altman,2 but the results given-the mean difference and the distribution of the differ- ences-are not good measures of reliability.Moreover, Bland and Altman proposed that the limits of agreement should be used to assess repeatability.For example, twice the standard deviation of the differences gives a range within which 95% of the differences will lie.A mean difference of zero implies that there is no consistent trend affecting test and retest results (all the patients getting better, for example).It does not imply that the measure is reliable.The table
Source: BMJ
Authors: J. Brazier, R. Harper, N. Jones, K. Thomas, L. Westlake, T. Usherwood
Language: English
Subfield: Economics and Econometrics
Domain: Social Sciences
Open Access status: bronze
OpenAlex ID: W1985455113