# How To Report Interobserver Agreement

This is relevant because the square root of the observation variant is a special case of the observer`s REM (inter- or intra) when only one repeated measurement is available (see below for the sem definition and its calculation in the more general case of several observers and measurements). REM is a standard deviation of repeated measurements obtained by measuring the same sample, as these measurements follow a normal Gauss distribution (Figure 3). In this case, the Intraobserver SEM represents the variability of the measurements around their mean when measurements are made by a given observer. Since this variability is assumed to follow a normal distribution, an intraobserver REM of 0.1 cm for a 5.0 cm measurement of LVEDD means that 67% of all repeated measurements made by that particular observer on the same subject are between 4.9 and 5.1 cm. In similar circumstances, the sem interobserver means that 67% of the repeated measurements on the same pattern by a second observer of the pair of observers are between 4.9 and 5.1 cm. The evaluation of observer variability is part of the analysis of the measurement system (1) and is a necessary task for any research that evaluates a new measurement method. It is also necessary to carry out an assessment of the variability of observers, including for methods that are well tested in the context of quality control. It is also a popular topic raised by reviewers during a peer review, often disguised as a lack of credibility in the veracity of the reported data. by Vet HC, Terwee CB, Knol DL, Bouter LM. When the agreement and reliability measures are to be used. J Clin Epidemiol. 2006;59 (10):1033-9. Repp, A.C., Deitz, D.

E., Boles, S.M., Deitz, S.M., and Repp, C. F. Differences between common methods of calculating the inter-observer agreement. Journal of Applied Behavior Analysis 1976,9, 109-113 Farkas, G.M. Correction of distortion in an interobserver compliance calculation method. Journal of Applies Behavior Analysis 1978,11, 188. The differences between the two values measured by suvmax in Study 1 were all less than one in absolute terms, with the exception of those observed for patients Nos. 3, 5, 10, 23 and 26 (supplementary file 2). The estimated mean difference between measure value 1 and measure value 2 was 0.43 (95% CI: − 0.02 to 0.88; Table 1) and the Bland Altman compliance limits were − 2.03 and 2.89. According to the Bland Altman diagram (Figure 2, top panel), the variance of differences over the entire measurement range seemed fairly homogeneous, but a growing trend was visible with an increasing average of the measurements. .