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Table 4 Summary of results of Rasch analysis of sustainment within the inner context measure

From: Provider REport of Sustainment Scale (PRESS): development and validation of a brief measure of inner context sustainment

Analysis Overall model fit Item fit residual mean (SD) Person fit residual mean (SD) PSI [a] % Sig. t tests
1. Items 1, 2, 3 χ2 = 19.441, df = 12, p = 0.078 0.766 1.458 0.826 2.47%
  1. SD standard deviation, χ2 chi-square, df degrees of freedom, p probability, PSI Person Separation Index
  2. [a] PSI with extremes included (0.8445 without extremes)