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Scores for each format were analysed for reliability, correlation between the two formats and differences between subject-groups.
We also showed that we have internal validity due to our good inter-rater reliability correlation between two reviewers who independently assessed the quality of reporting, key methodological items and PICOT framing of the research question.
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The alpha version of the tool will be tested on psychometric properties in terms of their interrater reliability, test-retest reliability and correlation between checklist score and receivers' assessment of the referral letter's usefulness.
Paired comparisons between observers varied considerably with interobserver reliability correlation coefficients ranging from 0.54 to 0.89.
Statistical analysis was performed using Cronbach alpha for reliability, Spearman correlation between FACIT-F scales and both mMRC and Vitality of SF-36 for validity, and Mann–Whitney test in patients with same/improved, or worsened fatigue for discriminative ability of both 13-FACIT-F and 9-FACIT-F scales.
With respect to the reliability, the correlation between both factors was moderate.
Inter-observer reliability (intraclass correlation) between tester and trainer was high (r = 0.99).
In order to detect a difference of 3 points with a power of 90%, a two-sided alpha of 5% and a reliability coefficient (correlation between consecutive measurements) of 0.7 [ 47], a minimum of 75 patients are required per treatment group (225 patients in total).
Kopelman et al. (1990) reported inter-rater reliability correlations of 0.83 0.86 between testers.
Our synteny approach did not detect signatures of erroneous contig joining in small scaffolds from gene dense regions in the assemblies; however when using sequence contents from 50 BACs to assess scaffold reliability a strong correlation between estimated scaffold reliability and scaffold assembly stringency was observed.
To assess split-half reliability, Spearman correlations between two theoretically equivalent halves (the 39-item odd-numbered half and the 39-item even-numbered half) of the PCQ were calculated.
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