Interrater reliability of Glasgow XXXX Scale scores in the @entity341 .

@entity1 @entity341 @entity772 @entity1662 @entity130
STUDY OBJECTIVE: Emergency physicians often use the Glasgow @entity772 Scale (GCS) to help guide decisions in @entity1 care, yet the reliability of the GCS has never been tested in a typical broad sample of @entity341 ( @entity341 ) @entity1 . We determined the interrater reliability of the GCS between emergency physicians when adult @entity1 with altered levels of @entity1662 are assessed. METHODS: In this prospective observational study at a university Level I @entity130 center, we enrolled a convenience sample of @entity341 @entity1 older than 17 years who presented with an altered level of @entity1662 . Two residency-trained attending emergency physicians independently assessed and recorded the GCS score and its components (eye, verbal, and motor) in blinded fashion within a 5-minute period. Data were analyzed for interrater reliability by using standard ordinal calculations. We also created scatter plots and Bland-Altman plots for each GCS component and for the GCS score. RESULTS: One hundred thirty-one @entity1 were screened and enrolled in the study, with 15 excluded because of protocol violations. Of the 116 remaining @entity1 , the agreement percentage for exact total GCS was 32% (tau-b=0.739; Spearman rho=0.864; Spearman rho2=75%). Agreement percentage for GCS components were eye 74% (tau-b=0.715; Spearman rho=0.757; Spearman rho2=57%), verbal 55% (tau-b=0.587; Spearman rho=0.665; Spearman rho2=44%), and motor 72% (tau-b=0.742; Spearman rho=0.808; Spearman rho2=65%). Our Spearman's analyses found that only approximately half (44% to 65%) of the observed variance could be explained by the relationship between the paired component measures. For GCS components, only 55% to 74% of paired measures were identical, and 6% to 17% of them were 2 or more points apart. CONCLUSION: We found only moderate degrees of interrater agreement for the GCS and its components.
