Analyse-it^® Standard Edition

Analyse-it provides the most complete implementation of Bland-Altman plots available, including the latest recommendations from Bland and Altman. Kappa and Weighted Kappa are included for examining inter-rater (qualitative) agreement.

• Describe and test agreement
  Bias and limits of agreement (with confidence intervals) are shown, with a hypothesis test that bias is zero. Differences can be transformed to ratios or relative percentage if variance is non-constant over the measurement range.
• Visualise agreement with difference and scatter plots
  Visualise the agreement with Bland-Altman difference plot (also known as Tukey mean-difference plot) showing bias and limits of agreement, a scatter plot with line of equality, or a histogram of differences.
  See an example Analyse-it report of the Bland Altman limits of agreement method
  Data from: Bland JM, Altman DG. (1986). Statistical methods for assessing agreement between two methods of clinical measurement. Lancet, i, 307-310.
  See example Bland-Altman difference plot showing bias and limits of agreement
  See example Scatter plot with identity (agreement) line
  See example Histogram of differences between methods
• Visualise repeatability
  See example Repeatability plot
• Describe and test agreement between qualitative variables
  Calculates Kappa & Weighted Kappa (supports linear and quadratic weightings) with confidence intervals. Tests the hypothesis of no agreement.

For a more extensive range of difference plots for analytical method comparision in the laboratory, see Analyse-it Method Evaluation edition