Comparative Assessment of PASI and Variations of PGA×BSA as Measures of Psoriasis Severity

2017 ◽  
Vol 2 (4) ◽  
pp. 113-118 ◽  
Author(s):  
Jessica A. Walsh ◽  
Huaming Tan ◽  
Hernan Valdez ◽  
Kristina Callis Duffin
Keyword(s):  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Severity Index ◽  
Percentage Change ◽  
Effect Sizes ◽  
Measurement Properties ◽  
Phase 3 ◽  
Intraclass Correlation Coefficients ◽  
Test Retest Reliability ◽  
Psoriasis Severity

Background Commonly used instruments for measuring psoriasis, such as Psoriasis Area and Severity Index (PASI), have limitations, including high complexity. Objective Determine if PGA×BSA or PGA×√BSA are practical alternatives to PASI for measuring severity and treatment response. Methods Data from a Phase 3 study in 1,101 patients treated for moderate to severe psoriasis were used. PASI was the reference standard. Correlations (Pearson coefficients), test-retest reliability (intraclass correlation coefficients), responsiveness to treatment (percentage change and effect size), and correspondence (sensitivity and specificity) were assessed. Results Correlation coefficients of change (baseline at Week 12) were 0.90 between PASI and either PGA×BSA and PGA×√BSA. ICCs were 0.90. Both instruments demonstrated similar percentage change from baseline and effect sizes. Sensitivities of PGA×BSA and PGA×√BSA were 99% and 95%, and specificities were 76% and 87%, respectively. Conclusions PGA×BSA and PGA×√BSA had similar measurement properties as PASI. PGA×BSA is a practical alternative to PASI.

Psychometric Comparisons of 2 Versions of the Fugl-Meyer Motor Scale and 2 Versions of the Stroke Rehabilitation Assessment of Movement

2008 ◽  
Vol 22 (6) ◽  
pp. 737-744 ◽  
Author(s):  
I-Ping Hsueh ◽  
Miao-Ju Hsu ◽  
Ching-Fan Sheu ◽  
Su Lee ◽  
Ching-Lin Hsieh ◽  
...  
Keyword(s):  
Stroke Rehabilitation ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Stroke Patients ◽  
Chronic Patients ◽  
Retest Reliability ◽  
Intraclass Correlation Coefficients ◽  
Mild Stroke ◽  
Test Retest Reliability ◽  
Rehabilitation Assessment

Objective. To provide empirical justification for selecting motor scales for stroke patients, the authors compared the psychometric properties (validity, responsiveness, test-retest reliability, and smallest real difference [SRD]) of the Fugl-Meyer Motor Scale (FM), the simplified FM (S-FM), the Stroke Rehabilitation Assessment of Movement instrument (STREAM), and the simplified STREAM (S-STREAM). Methods. For the validity and responsiveness study, 50 inpatients were assessed with the FM and the STREAM at admission and discharge to a rehabilitation department. The scores of the S-FM and the S-STREAM were retrieved from their corresponding scales. For the test-retest reliability study, a therapist administered both scales on a different sample of 60 chronic patients on 2 occasions. Results. Only the S-STREAM had no notable floor or ceiling effects at admission and discharge. The 4 motor scales had good concurrent validity (rho ≥ .91) and satisfactory predictive validity (rho = .72-.77). The scales showed responsiveness (effect size d ≥ 0.34; standardized response mean ≥ 0.95; P < .0001), with the S-STREAM most responsive. The test-retest agreements of the scales were excellent (intraclass correlation coefficients ≥ .96). The SRD of the 4 scales was 10% of their corresponding highest score, indicating acceptable level of measurement error. The upper extremity and the lower extremity subscales of the 4 showed similar results. Conclusions. The 4 motor scales showed acceptable levels of reliability, validity, and responsiveness in stroke patients. The S-STREAM is recommended because it is short, responsive to change, and able to discriminate patients with severe or mild stroke.

An App to Assess Young Children’s Perceptions of Movement Competence

2018 ◽  
Vol 6 (s2) ◽  
pp. S252-S263 ◽  
Author(s):  
Lisa M. Barnett ◽  
Owen Makin
Keyword(s):  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Future Research ◽  
Children's Perceptions ◽  
Intraclass Correlation Coefficients ◽  
Children’S Perceptions ◽  
Digital Assessment ◽  
Android App ◽  
Test Retest Reliability ◽  
Good Agreement

Assessing young children’s perceptions is commonly done one on one with an interviewer. An app enables several children to complete the scale at once. The objective was to describe an app to assess children’s perceptions of movement competence and then present consistency of child responses. The Pictorial Scale of Perceived Movement Skill Competence (PMSC) has fundamental movement skill (FMS; e.g., catch) and play items (e.g., cycling). The PMSC android app has the same items and images but children complete it independently with audio. Intraclass correlation coefficients (ICC) assessed i) test-retest reliability using the PMSC app on 18 items in 42 children (M = 6.8 yrs) and ii) consistency between measures for 13 FMS items in 44 children (M = 8.5 yrs). Over time (M = 6.9 days, SD = 0.35) the full PMSC had good consistency (ICC = 0.79, 95% CI 0.64–0.88) and the FMS items had moderate consistency (ICC = 0.68, 95% CI 0.47–0.81). There was good agreement between the app and interview for FMS items (ICC = 0.86, 95% CI 0.76–0.92). Locomotor items were less consistent. The PMSC app can generally be recommended. Future research could investigate how different forms of digital assessment affect children’s perception.

scholarly journals Test-retest reliability and minimal detectable change of the Balance Evaluation Systems Test and its two abbreviated versions in persons with mild to moderate spinocerebellar ataxia: A pilot study

2020 ◽  
Vol 47 (4) ◽  
pp. 479-486
Author(s):  
Yuki Kondo ◽  
Kyota Bando ◽  
Yosuke Ariake ◽  
Wakana Katsuta ◽  
Kyoko Todoroki ◽  
...  
Keyword(s):  
Spinocerebellar Ataxia ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Retest Reliability ◽  
Evaluation Systems ◽  
Intraclass Correlation Coefficients ◽  
Interclass Correlation ◽  
Test Retest Reliability

BACKGROUND: The reliability of the evaluation of the Balance Evaluation Systems Test (BESTest) and its two abbreviated versions are confirmed for balance characteristics and reliability. However, they are not utilized in cases of spinocerebellar ataxia (SCA). OBJECTIVE: We aimed to examine the test-retest reliability and minimal detectable change (MDC) of the BESTest and its abbreviated versions in persons with mild to moderate spinocerebellar ataxia. METHODS: The BESTest was performed in 20 persons with SCA at baseline and one month later. The scores of the abbreviated version of the BESTest were determined from the BESTest scores. The interclass correlation coefficient (1,1) was used as a measure of relative reliability. Furthermore, we calculated the MDC in the BESTest and its abbreviated versions. RESULTS: The intraclass correlation coefficients (1,1) and MDC at 95% confidence intervals were 0.92, 8.7(8.1%), 0.91, 4.1(14.5%), and 0.81, 5.2(21.6%) for the Balance, Mini-Balance, and Brief-Balance Evaluation Systems Tests, respectively. CONCLUSIONS: The BESTest and its abbreviated versions had high test-retest reliability. The MDC values of the BESTest could enable clinicians and researchers to interpret changes in the balance of patients with SCA more precisely.

Effects of Trial Duration on Intrasession Reliability of Single Leg Balance Testing on Stable and Unstable Surfaces

2017 ◽  
Vol 26 (6) ◽  
Author(s):  
Bryan L. Riemann ◽  
Kelsey Piersol ◽  
George J. Davies
Keyword(s):  
Center Of Pressure ◽  
Phase 1 ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Phase 2 ◽  
Single Trial ◽  
Trial Duration ◽  
Phase 3 ◽  
Intraclass Correlation Coefficients ◽  
Balance Testing

Context: Single leg balance testing is a commonly used tool in sports medicine; however, there has been no consensus on trial duration needed to obtain reliable measures. Objective: This investigation sought to determine the minimum trial duration required to obtain the highest intrasession single and average trial reliability for single leg balance testing on stable and unstable surfaces using dominant and nondominant limbs. Design: Intrasession reliability.Setting:Biomechanics laboratory. Participants: 70 healthy (35 men, 35 women), physically active young adults aged 22.8 ± 2.8 y divided into 3 subgroups (n = 10, 30, 30) across a 3-phase study. Methods:3 phases of single leg balance testing were performed. For phase 1, the duration of time each participant could maintain posture on each limb/surface were computed. Phase 2 considered performance for 6 cumulative time intervals (5s, 10s, 15s, 20s, 25s, 30s). Phase 3 served to solidify results of phase 2 by computing reliability of 15s trials. Main outcome measures: Overall stability index of the center of pressure and platform tilt. Results: Intraclass correlation coefficients for phase 2 ranged from .74 (5s interval for nondominant limb on unstable surface) to .94 (20s interval for nondominant limb on stable surface). Phase 3 intraclass correlation coefficients ranged from .66 to .78 for single trial and .85 to .92 for 3 trial average with coefficients of variation ranging from 23.9% to 40.4% for single trial and 13.8% to 23.0% for 3 trial average. Conclusions:These results ultimately suggest 15s as the optimal trial duration to provide reliable measures while reducing compensatory event occurrence.

Reliability and Validity of the Posture and Fine Motor Assessment of Infants

1989 ◽  
Vol 9 (5) ◽  
pp. 259-272 ◽  
Author(s):  
Jane Case-Smith
Keyword(s):  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Fine Motor ◽  
Motor Assessment ◽  
Intraclass Correlation Coefficients ◽  
Highly Correlated ◽  
Peabody Developmental Motor Scales ◽  
The Individual ◽  
Test Retest Reliability

The Posture and Fine Motor Assessment of Infants (PFMAI) (Case-Smith, 1987) is a newly developed instrument for assessing the quality of motor function in infants. The test measures components of posture and fine motor control as they first develop. The purpose of this study was to support the test's reliability and validity. Interrater reliability, analyzed with intraclass correlation coefficients (ICCs), was high (.989 for total scores). Test-retest reliability, measured by ICCs, was .853 and .913 for the two test sections. The PFMAI demonstrated concurrent validity with the Peabody Developmental Motor Scales, Revised (Folio & Fewell, 1983) (correlations were .673 and .829 for the individual sections). Scores on the PFMAI were highly correlated with the infant's ages (.892 to .941); this finding provided one indication of construct validity.

scholarly journals The Reliability of Pharyngeal High Resolution Manometry with Impedance for Derivation of Measures of Swallowing Function in Healthy Volunteers

2016 ◽  
Vol 2016 ◽  
pp. 1-8 ◽  
Author(s):  
Taher I. Omari ◽  
Johanna Savilampi ◽  
Karmen Kokkinn ◽  
Mistyka Schar ◽  
Kristin Lamvik ◽  
...  
Keyword(s):  
High Resolution ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Interrater Agreement ◽  
Swallowing Function ◽  
Retest Reliability ◽  
High Resolution Manometry ◽  
Intraclass Correlation Coefficients ◽  
Test Retest Reliability ◽  
Swallow Function

Purpose. We evaluated the intra- and interrater agreement and test-retest reliability of analyst derivation of swallow function variables based on repeated high resolution manometry with impedance measurements.Methods. Five subjects swallowed10×10 mL saline on two occasions one week apart producing a database of 100 swallows. Swallows were repeat-analysed by six observers using software. Swallow variables were indicative of contractility, intrabolus pressure, and flow timing.Results. The average intraclass correlation coefficients (ICC) for intra- and interrater comparisons of all variable means showedsubstantialtoexcellentagreement (intrarater ICC 0.85–1.00; mean interrater ICC 0.77–1.00). Test-retest results were less reliable. ICC for test-retest comparisons ranged fromslighttoexcellentdepending on the class of variable. Contractility variables differed most in terms of test-retest reliability. Amongst contractility variables, UES basal pressure showedexcellenttest-retest agreement (mean ICC 0.94), measures of UES postrelaxation contractile pressure showedmoderatetosubstantialtest-retest agreement (mean Interrater ICC 0.47–0.67), and test-retest agreement of pharyngeal contractile pressure ranged fromslighttosubstantial(mean Interrater ICC 0.15–0.61).Conclusions. Test-retest reliability of HRIM measures depends on the class of variable. Measures of bolus distension pressure and flow timing appear to be more test-retest reliable than measures of contractility.

Reliability and Validity of a Wireless Accelerometer for the Assessment of Postural Sway

2015 ◽  
Vol 31 (3) ◽  
pp. 159-163 ◽  
Author(s):  
Nathan W. Saunders ◽  
Panagiotis Koutakis ◽  
Anne D. Kloos ◽  
Deborah A. Kegelmeyer ◽  
Jessica D. Dicke ◽  
...  
Keyword(s):  
Postural Sway ◽  
Center Of Mass ◽  
Intraclass Correlation ◽  
Reliability And Validity ◽  
Correlation Coefficients ◽  
Discrimination Capability ◽  
Intraclass Correlation Coefficients ◽  
Balance Task ◽  
Eyes Open ◽  
Test Retest Reliability

Clinicians are in need of valid and objective measures of postural sway. Accelerometers have been shown to be suitable alternatives to expensive and stationary force plates. We evaluated the test-retest reliability and balance task discrimination capability of a new wireless triaxial accelerometer (YEI 3-Space Sensor). Four testing conditions (eyes open or closed, while on a firm or compliant surface) were used to progressively challenge the static balance of 20 healthy male (n = 8) and female (n = 12) older adults (mean age 81 ± 4.3 y). Subjects completed 2 blocks of three 30-second trials per condition. The accelerometer was positioned on the lower back to acquire mediolateral (M-L) and anterior-posterior (A-P) accelerations. Intraclass correlation coefficients were all good to excellent, with values ranging from .736 to .972 for trial-to-trial and from .760 to .954 for block-to-block. A significant stepwise increase in center of mass acceleration root mean square values was found across the 4 balance conditions (F[1.49, 28.26] = 39.54, P < .001). The new accelerometer exhibited good to excellent trial-to-trial and block-to-block reliability and was sensitive to differences in visual and surface conditions and acceleration axes.

scholarly journals Reliability of the ForceFrame With and Without a Fixed Upper-Limb Mold in Shoulder Rotation Strength Assessments Compared With Traditional Hand-Held Dynamometry

2021 ◽  
pp. 1-4
Author(s):  
Jamon Couch ◽  
Marc Sayers ◽  
Tania Pizzari
Keyword(s):  
Upper Limb ◽  
External Rotation ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Shoulder Abduction ◽  
Minimal Detectable Change ◽  
Retest Reliability ◽  
Intraclass Correlation Coefficients ◽  
Shoulder Strength ◽  
Test Retest Reliability

Context: An imbalance between shoulder internal rotation (IR) and external rotation (ER) strength in athletes is proposed to increase the risk of sustaining a shoulder injury. Hand-held (HHD) and externally fixed dynamometry are reliable forms of assessing shoulder IR and ER strength. A new externally fixed device with an attachable fixed upper-limb mold (The ForceFrame) exists; however, its reliability in measuring shoulder strength is yet to be investigated. Objective: To determine the test–retest reliability of the ForceFrame, with and without the fixed upper-limb mold, in the assessment of shoulder IR and ER strength, as compared with HHD. Design: Test–retest reliability study. Setting: Laboratory, clinical. Participants: Twenty-two healthy and active individuals were recruited from the university community and a private physiotherapy practice. Main Outcome Measures: Maximal isometric shoulder IR and ER strength was measured using the ForceFrame and traditional HHD in neutral and at 90° shoulder abduction. Mean (SD) strength measures were calculated. Test–retest reliability was analyzed using intraclass correlation coefficients (3, 1). The SEM and minimal detectable change were calculated. Results: Good to excellent test–retest reliability was found for all shoulder strength tests across Hand-held dynamometry (HHD) and externally fixed dynamometry (EFD) are reliable forms (intraclass correlation coefficients [3, 1] = .854–.916). The minimal detectable changes ranged between 25.61 and 41.84 N across tests. Test–retest reliability was not affected by the dynamometer or testing position. Conclusions: The results from this study indicate that both the ForceFrame and HHD are suitable for measuring shoulder strength in clinical practice. The use of the fixed upper-limb mold with the ForceFrame does not improve reliability.

scholarly journals The Test–Retest Reliability of Bilateral and Unilateral Force Plate–Derived Parameters of the Countermovement Push-Up in Elite Boxers

2020 ◽  
pp. 1-5
Author(s):  
Gemma N. Parry ◽  
Lee C. Herrington ◽  
Ian G. Horsley ◽  
Ian Gatt
Keyword(s):  
Upper Limb ◽  
Coefficient Of Variation ◽  
Athletic Performance ◽  
Intraclass Correlation ◽  
Force Plate ◽  
Correlation Coefficients ◽  
Vertical Stiffness ◽  
Intraclass Correlation Coefficients ◽  
Test Retest Reliability ◽  
Push Up

Context: Maximal power describes the ability to immediately produce power with the maximal velocity at the point of release, impact, and/or take off—the greater an athlete’s ability to produce maximal power, the greater the improvement of athletic performance. In reference to boxing performance, regular consistent production of high muscular power during punching is considered an essential prerequisite. Despite the importance of upper limb power to athletic performance, presently, there is no gold standard test for upper limb force development performance. Objective: To investigate the test–retest reliability of the force plate–derived measures of countermovement push-up in elite boxers. Design: Test–retest design. Setting: High Performance Olympic Training Center. Participants: Eighteen elite Olympic boxers (age = 23 [3] y; height = 1.68 [0.39] m; body mass = 70.0 [17] kg). Intervention: Participants performed 5 repetitions of countermovement push-up trials on FD4000 Forcedeck dual force platforms on 2 separate test occasions 7 days apart. Main Outcome Measures: Peak force, mean force, flight time, rate of force development, impulse, and vertical stiffness of the bilateral and unilateral limbs from the force–time curve. Results: No significant differences between the 2 trial occasions for any of the derived bilateral or unilateral performance measures. Intraclass correlation coefficients indicated moderate to high reliability for performance parameters (intraclass correlation coefficients = .68–.98) and low coefficient of variation (3%–10%) apart from vertical stiffness (coefficient of variation = 16.5%–25%). Mean force demonstrated the greatest reliability (coefficient of variation = 3%). In contrast, no significant differences (P < .001) were noted between left and right limbs (P = .005–.791), or between orthodox or southpaw boxing styles (P = .19–.95). Conclusion: Force platform–derived kinetic bilateral and unilateral parameters of countermovement push-up are reliable measures of upper limb power performance in elite-level boxers; results suggest unilateral differences within the bilateral condition are not the norm for an elite boxing cohort.

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