Intra-rater reliability

About: Intra-rater reliability is a research topic. Over the lifetime, 2073 publications have been published within this topic receiving 140968 citations.

Pressure algometry is a useful tool to quantify pain in the medial part of the knee: An intra- and inter-reliability study in healthy subjects

Abstract: Purpose Pain quantification is essential for diagnostic and pain monitoring purposes in disorders around the knee. Pressure algometry is a method described to determine pressure pain threshold (PPT) by applying controlled pressure to a given body point. The purpose of this study was to determine the reliability of this method when it was applied to the medial part of the proximal tibia metaphysis and to evaluate the PPT levels between genders. Methods Fifty healthy (mean age; 46.9) volunteers were recruited, 25 men and 25 women. Pressure algometry was applied to a 1 cm2-probe area on the medial part of the knee by 2 raters. Intra- and interclass correlation (ICC) was obtained and differences between genders were evaluated. Bland-Altman plots were performed to evaluate the variability of the measures. Results The mean values of PPT obtained by rater 1 and 2 were 497.5 Kpa and 489 Kpa respectively. The intrarater reliability values (95% IC) for rater 1 and 2 were 0.97 (0.95–0.98) and 0.84 (0.73–0.90) respectively. With regard to interrater reliability, the ICC (95% IC) for the first measurement was 0.92 (0.87–0.95) and 0.86 (0.78–0.92) for the second one. Women showed significant lower values of PPT than men. The Bland-Altmand plots showed excellent agreement. Conclusions Pressure algometry has excellent reliability when it is applied to the medial part of the proximal metaphysis of the tibia. Women have lower values of PTT than men. The high reliability of the PA in an individual volunteer makes it a more valuable tool for longitudinal assessment of a given patient than for comparison between them. Level of evidence Level III. Prospective study.

Can the ICF be used as a rehabilitation outcome measure? A study looking at the inter- and intra-rater reliability of ICF categories derived from an ADL assessment tool.

Abstract: Purpose: The categories of the International Classification of Functioning , Disability and Health (ICF) could potentially be used as components of outcome measures. Literature demonstrating the psychometric properties of ICF categories is limited. Objective: Determine the agreement and reliability of ICF activities of daily living category scores and compare these to agreement and reliability of the Functional Independence Measure (FIM) item scores. Method: Two investigators independently reviewed the clinical notes to score the ICF activities of daily living cate gories, of 100 patients using ICF qualifiers with additional scor ing guidelines. The percentage agreement, interrater and intrarater reliability were compared with the matched FIM items scored by a separate set of two investigators using the same methodology. Kappa Statistic was calculated using Med Calc. Results: ICF interrater reliability as indicated by Kappa values ranging from 0.42 to 0.81 was moderate or better for the eleven self care and mobility categories. The language ICF categories and problem solving generally have fair agreement, with Kappa values ranging from 0.21 for receiving verbal messages to 0.44 for basic social interactions. Absolute agreement was above 72% for all categories. Reliability and agreement of the FIM items was generally lower than the corresponding ICF categories. Conclusion: The inter-rater and intra-rater reliability and agreement of the ICF activities of daily living categories were comparable or better than the corresponding FIM items. The results of this study provide an indication that the ICF categories could be used as components of rehabilitation outcome measures.

A quantitative and reproducible method to assess cord compression and canal stenosis after cervical spine trauma: a study of interrater and intrarater reliability.

Abstract: Study design Reliability study. Objective To assess the intrarater and interrater reliability of a recently described technique to measure of maximum canal compromise (MCC) and maximum spinal cord compression (MSCC) using digitized and magnified images in the setting of traumatic cervical spinal cord injury (SCI). Summary of background data The extent of MCC and MSCC is of clinical and prognostic value in the setting of traumatic cervical SCI. However, concerns remain regarding the accuracy of measurements based on hard copy images. We hypothesized that the interrater and intrarater reliability of these assessments would be enhanced using magnified digitized images and software-based measurement tools. Methods Midsagittal MRI and CT images of cervical spine were selected from 5 individuals with acute traumatic cervical SCI. Measurements of MCC using CT scan and T1-weighted MRI and measurements of MSCC based on T2-weighted MR images were independently estimated by 13 raters on 10 occasions. Results The intrarater reliability for CT-MCC, T1-weighted MRI-MCC and T2-weighted MRI-MSCC was high in the 10 rounds in each patient. In addition, the mean intrarater interclass correlation coefficient was 0.72 +/- 0.05 for the CT-MCC, 0.70 +/- 0.07 for the T1-weighted MRI-MCC, and 0.68 +/- 0.11 for the T2-weighted MRI-MSCC. The mean interrater interclass correlation coefficients were 0.43 +/- 0.02 for the CT-MCC, 0.61 +/- 0.03 for the T1-weighted MRI-MCC, and 0.55 +/- 0.05 for the evaluation of T2-weighted MRI-MSCC. Conclusion Our study has demonstrated that the intrarater reliability for the instrument to assess MCC and MSCC in the setting of traumatic SCI was high. The interrater ICCs at a moderate level of reliability combined with our results using analysis of variance with post hoc tests indicate that the measurements of MCC and MSCC are reproducible, which supports the use of these radiologic parameters in the clinical and research settings.

The Persian version of the Berg Balance Scale: inter and intra-rater reliability and construct validity in elderly adults

Abstract: Purpose: As a well-known measure for quantifying functional mobility in elderly persons, Berg Balance Scale (BBS) was used in the present study to evaluate its psychometric properties among a sample of 106 elderly individuals speaking Persian language. Method: After forward-backward translation process, videotapes were recorded from all participants while performing 14 tasks of the BBS. The volunteers were also asked to perform the Timed Up and Go (TUG) test at the same session. To determine inter and intra-rater reliability, the videotapes were viewed by two experienced therapists while one of the raters assessed the videotaped performance of the subjects on a second occasion. Results: Intraclass correlation coefficients (95% confidence interval) of 0.93 (0.87 0.96) and 0.95 (0.92 0.97) were obtained for inter and intra-rater reliability, respectively. Cronbach’s alpha was 0.62 which is marginally lower than the cut-off point of 0.70. Furthermore, there were no ceiling and floor effects for the Persian v...