Safety culture mean scores, variation in scores across working units and between hospitals versus health clinics, predictors of safety culture, and medication errors and their correlation.
The mean scores and variations in personal qualities awarded by staff members, GP trainers and trainees were nearly the same.
Based on mean scores and score variations for MMSE, EQ-VAS, Cornell depression scale, and GDS from previous studies in similar populations with Alzheimer's disease, 13 33 34 35 we estimated that a group size of 165 was needed in order to detect a minimum effect size (defined as the difference at 12 months between groups for observed scores) of 1.2 (SD 2.6) for MMSE, 2.0 (4.4).
Although there were differences in the mean scores, the variation could be due to the small sample size.
Mean scores and variation, expressed as the pooled standard deviation or as the average range between the maximum and minimum scores for the two methods, were compared using paired sample t-tests or Wilcoxon Signed Rank Test.
VBP score had substantial variations, with mean score of 30 and 60 in the first and fourth quartiles of the VBP score distribution.
We checked this by plotting the SD of ratings for each consultation against the mean score for that consultation (a variation on the standard Bland-Altman plot, allowing for more than two ratings per consultation).
An identical grading of "erythema", "oedema", and "granularity" might reduce the differences between experienced and inexperienced endoscopists as well as the inter-observer variation of the mean score.
The inter-observer variation of the mean score of "erosions", "ulcerations" and endoscopic activity index in mild disease, and the scoring of "erythema" and "oedema" in moderate-severe disease was significantly higher in the inexperienced group.
A morphological distinctiveness score (MDS) was calculated for each population by taking the average value of the absolute difference between each fish's score along a particular axis from the overall, across-population mean score, weighted by the percentage of variation accounted for by that axis, and summing these values across the first three PCA axes.
A genetic distinctiveness score (GDS) was calculated for each population by taking the average value of the absolute difference between each fish's score along a particular axis from the overall, across-population mean score, weighted by the percentage of variation accounted for by that axis, and summing these values across each of the three FCA axes.
