scholarly journals Development of the Hand Assessment for Infants: evidence of internal scale validity

2017 ◽  
Vol 59 (12) ◽  
pp. 1276-1283 ◽  
Author(s):  
Lena Krumlinde-Sundholm ◽  
Linda Ek ◽  
Elisa Sicola ◽  
Lena Sjöstrand ◽  
Andrea Guzzetta ◽  
...  
Keyword(s):  
Scale Validity ◽  
Internal Scale

Development of the Mini-Assisting Hand Assessment: evidence for content and internal scale validity

2013 ◽  
Vol 55 (11) ◽  
pp. 1030-1037 ◽  
Author(s):  
Susan Greaves ◽  
Christine Imms ◽  
Karen Dodd ◽  
Lena Krumlinde-Sundholm
Keyword(s):  
Scale Validity ◽  
Internal Scale

scholarly journals Impact on participation and autonomy questionnaire: internal scale validity of the Swedish version for use in people with spinal cord injury

2007 ◽  
Vol 39 (2) ◽  
pp. 156-162 ◽  
Author(s):  
ML Lund ◽  
AG Fisher ◽  
J Lexell ◽  
B Bernspång
Keyword(s):  
Spinal Cord ◽  
Spinal Cord Injury ◽  
Swedish Version ◽  
Scale Validity ◽  
Cord Injury ◽  
Internal Scale

scholarly journals Reliability and Validity of Scores from the Foot and Ankle Ability Measure

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0008
Author(s):  
Lauren Matheny ◽  
Thomas Clanton
Keyword(s):  
Item Difficulty ◽  
Reliability And Validity ◽  
Good Evidence ◽  
Small Sample ◽  
Test Theory ◽  
Foot And Ankle ◽  
Scale Validity ◽  
Acceptable Range ◽  
Ability Measure ◽  
Internal Scale

Category: Ankle Introduction/Purpose: A commonly used measure of ankle function is the Foot and Ankle Ability Measure (FAAM). To support interpretation of the FAAM, evidence of reliability and validity must be established. Some studies have assessed FAAM scores; however, these studies had small sample sizes, sample characteristics that may limit generalizability, and did not report reliability estimates. These studies were also unable to account for person ability and item difficulty, a unique feature Rasch modeling offers, which is key when attempting to generalize to other populations. The purpose of this study was to determine whether there is evidence of reliability and validity for the FAAM ADL and Sport scales, utilizing the Rasch model, in patients who have undergone surgical intervention for the treatment of an ankle injury. Methods: Evidence of reliability and validity were determined utilizing the Rasch measurement model, a special case of item response theory, which has been used to develop new patient reported outcome measures and improve existing measures. This is a widely used technique that may be used as an alternative to classical test theory due to advantages including generalizability across samples, accounting for response options not equally spaced in terms of ability, and identifying poorly functioning items. The scale of interest is measured in terms of item difficulty and generates estimates of locations of individual items (item difficulty) and ability level along a common interval-level scale (log-odds). To identify misfit items, outfit mean-square (MNSQ) and infit MNSQ statistics were assessed. Infit and outfit MNSQ range from 0 to positive infinity (ideal value of 1.0 means observed variance = expected variance; acceptable value range 0.5 -1.7). Person reliability was also reported (analogous to Cronbach’s a). Results: There were 456 patients included in the study(192 females, 264 males)(average age=47.6 years(18-79). Rasch analysis showed good evidence of reliability for FAAM ADL and FAAM Sport scores (Figure 1). Person reliability was 0.87 for FAAM ADL and 0.89 for FAAM Sport. Outfit MNSQ values for FAAM ADL items 11 (Coming Up On Toes) and 10 (Squatting) were high (2.17, 1.96). Item 19 “Light/Moderate Work” was low(0.48), indicating item redundancy. For FAAM Sport, all outfit values (range 0.67 -1.64) were within the acceptable range. For internal scale validity, infit MNSQ values for FAAM ADL items 11 and 10 were high(2.30, 2.05). All other infit values (range 0.61 -1.48) were within the acceptable range. For FAAM Sport, all infit values (range 0.74 -1.65) were within the acceptable range. Conclusion: This study provides good evidence of reliability for FAAM ADL and Sport scores in a wide range of patients who underwent ankle surgery, which may demonstrate wide clinical applicability. Both scales demonstrated good internal scale validity; however, 3 FAAM ADL items may indicate the need for further scale development for use in a diverse ankle population.

P-Drive on-road: Internal scale validity and reliability of an assessment of on-road driving performance in people with neurological disorders

2010 ◽  
Vol 17 (1) ◽  
pp. 86-93 ◽  
Author(s):  
Ann-Helen Patomella ◽  
Kerstin Tham ◽  
Kurt Johansson ◽  
Anders Kottorp
Keyword(s):  
Neurological Disorders ◽  
Driving Performance ◽  
Validity And Reliability ◽  
Scale Validity ◽  
Internal Scale

Making a Pie as a Metaphor for Teaching Scale Validity and Reliability

2006 ◽  
Vol 27 (3) ◽  
pp. 393-398
Author(s):  
Nader Nassif ◽  
Yvette Khalil
Keyword(s):  
Validity And Reliability ◽  
Scale Validity

Tubular Type Heat Flux Meter for Monitoring Internal Scale Deposits in Large Steam Boilers

2007 ◽  
Vol 28 (3) ◽  
pp. 230-239 ◽  
Author(s):  
Jan Taler ◽  
Dawid Taler
Keyword(s):  
Heat Flux ◽  
Tubular Type ◽  
Steam Boilers ◽  
Heat Flux Meter ◽  
Scale Deposits ◽  
Internal Scale

FRACTURE MECHANICS IN PERFORATED DOMAINS: A VARIATIONAL MODEL FOR BRITTLE POROUS MEDIA

2009 ◽  
Vol 19 (11) ◽  
pp. 2065-2100 ◽  
Author(s):  
MATTEO FOCARDI ◽  
M. S. GELLI ◽  
M. PONSIGLIONE
Keyword(s):  
Porous Medium ◽  
Porous Media ◽  
Fracture Mechanics ◽  
Special Functions ◽  
Variational Model ◽  
Perforated Domain ◽  
Functions Of Bounded Variation ◽  
Perforated Domains ◽  
Γ Convergence ◽  
Internal Scale

This paper deals with fracture mechanics in periodically perforated domains. Our aim is to provide a variational model for brittle porous media in the case of anti-planar elasticity. Given the perforated domain Ωε ⊂ ℝN (ε being an internal scale representing the size of the periodically distributed perforations), we will consider a total energy of the type [Formula: see text] Here u is in SBV(Ωε) (the space of special functions of bounded variation), Su is the set of discontinuities of u, which is identified with a macroscopic crack in the porous medium Ωε, and [Formula: see text] stands for the (N - 1)-Hausdorff measure of the crack Su. We study the asymptotic behavior of the functionals [Formula: see text] in terms of Γ-convergence as ε → 0. As a first (nontrivial) step we show that the domain of any limit functional is SBV(Ω) despite the degeneracies introduced by the perforations. Then we provide explicit formula for the bulk and surface energy densities of the Γ-limit, representing in our model the effective elastic and brittle properties of the porous medium, respectively.

The Patient-Specific Functional Scale: Validity, Reliability, and Responsiveness in Patients With Upper Extremity Musculoskeletal Problems

2012 ◽  
Vol 42 (2) ◽  
pp. 56-65 ◽  
Author(s):  
Cheryl Hefford ◽  
J. Haxby Abbott ◽  
Richard Arnold ◽  
G. David Baxter
Keyword(s):  
Upper Extremity ◽  
Patient Specific ◽  
Functional Scale ◽  
Scale Validity ◽  
Musculoskeletal Problems
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