What is the difference between stability and consistency

Results: Of the 89 enrolled patients, 57 who completed the questionnaire on enrollment returned a second completed form at 3-month followup.

Over the 3-month followup period most of the patients showed an improvement in the Eichenholtz staging. The internal consistency of most was moderate to high and, in general, the scale scores were stable over 3 months.

However, several of the scales suffered from low-ceiling or high-floor effects. Patients with Charcot arthropathy had a much lower physical component score on enrollment than the reported norms for other disease conditions, including diabetes.

Conclusions: Quality of life represents an important set of outcomes when evaluating the effectiveness of treatment for patients with Charcot arthropathy. This study represents an initial attempt to develop a standardized survey for use with this patient population.

Further studies need to be done with larger groups of patients to refine the tool and to begin the validation process. Many different approaches are used to discretize differential equations: finite differences, finite Skip to main content Skip to table of contents. This service is more advanced with JavaScript available. Encyclopedia of Applied and Computational Mathematics Edition. Contents Search. Stability, Consistency, and Convergence of Numerical Discretizations. Authors Authors and affiliations Douglas N.

Reference work entry First Online: 21 November How to cite. Overview A problem in differential equations can rarely be solved analytically, and so often is discretized, resulting in a discrete problem which can be solved in a finite sequence of algebraic operations, efficiently implementable on a computer.

A Framework for Assessing Discretizations Many different approaches are used to discretize differential equations: finite differences, finite This is a preview of subscription content, log in to check access. Charney, J.