scholarly journals Familiarization, validity and smallest detectable difference of the isometric squat test in evaluating maximal strength

2018 ◽  
Vol 36 (18) ◽  
pp. 2087-2095 ◽  
Author(s):  
David Drake ◽  
Rodney Kennedy ◽  
Eric Wallace
Keyword(s):  
Maximal Strength ◽  
Detectable Difference ◽  
Smallest Detectable Difference

Evaluation of the smallest detectable difference in outcome or process variables in ankylosing spondylitis

2002 ◽  
Vol 47 (6) ◽  
pp. 582-587 ◽  
Author(s):  
Guy-Robert Auleley ◽  
Karima Benbouazza ◽  
Anneke Spoorenberg ◽  
Eduardo Collantes ◽  
Najia Hajjaj-Hassouni ◽  
...  
Keyword(s):  
Ankylosing Spondylitis ◽  
Process Variables ◽  
Detectable Difference ◽  
Smallest Detectable Difference

scholarly journals Prevalence and Risk Factors of Discordance between Left- and Right-Hip Bone Mineral Density Using DXA

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Aziza Mounach ◽  
Asmaa Rezqi ◽  
Imad Ghozlani ◽  
Lahsen Achemlal ◽  
Ahmed Bezza ◽  
...  
Keyword(s):  
Bone Mineral Density ◽  
Bone Mineral ◽  
Mineral Density ◽  
Detectable Difference ◽  
Smallest Detectable Difference ◽  
Left And Right ◽  
The Difference ◽  
Highly Correlated ◽  
The Impact ◽  
Confounding Parameters

To determine the prevalence of significant left-right differences in hip bone mineral density (BMD), and the impact of this difference on osteoporosis diagnosis, we measured bilateral proximal femora using dual energy X-ray absorptiometry (DXA) in 3481 subjects (608 males, 2873 females). The difference between left and right hip was considered significant if it exceeded the smallest detectable difference (SDD) for any of the three hip subregions. Contralateral femoral BMD was highly correlated at all measuring sites (–0.95). However, significant left-right differences in BMD were common: the difference exceeded the SDD for 54% of patients at total hip, 52.1% at femoral neck, and 57.7% at trochanter. The prevalence of left-right differences was greater in participants >65 years. For 1169 participants with normal spines, 22 (1.9%) had discordant left-right hips in which one hip was osteoporotic; for 1349 patients with osteopenic spines, 94 (7%) had osteoporosis in one hip. Participants with BMI < 20 kg/m2 were more likely to show major T-score discordance (osteoporosis in one hip and normal BMD in the other). Multiple regression analysis showed that the only significant statically parameter that persists after adjusting for all potential confounding parameters were age over 65 years.

scholarly journals Bone Area Provides a Responsive Outcome Measure for Bone Changes in Short-term Knee Osteoarthritis Studies

2016 ◽  
Vol 43 (12) ◽  
pp. 2179-2182 ◽  
Author(s):  
Michael A. Bowes ◽  
Rose A. Maciewicz ◽  
John C. Waterton ◽  
David J. Hunter ◽  
Philip G. Conaghan
Keyword(s):  
Magnetic Resonance Images ◽  
Bone Area ◽  
Active Appearance Models ◽  
Knee Oa ◽  
Detectable Difference ◽  
Bone Changes ◽  
Smallest Detectable Difference ◽  
Small Cohort ◽  
Appearance Models ◽  
The Mean

Objective.To analyze the 3-D bone area from an osteoarthritis (OA) cohort demonstrating no change in cartilage thickness.Methods.Twenty-seven women with painful medial knee OA had magnetic resonance images at 0, 3, and 6 months. Images were analyzed using active appearance models.Results.At 3 and 6 months, the mean change in medial femoral bone area was 0.34% (95% CI 0.04–0.64) and 0.61% (95% CI 0.32–0.90), respectively. Forty-one percent of the subjects had progression greater than the smallest detectable difference at 6 months.Conclusion.In this small cohort at high risk of OA progression, bone area changed at 3 and 6 months when cartilage morphometric measures did not.

scholarly journals Definition of Nonresponse to Analgesic Treatment of Arthritic Pain: An Analytical Literature Review of the Smallest Detectable Difference, the Minimal Detectable Change, and the Minimal Clinically Important Difference on the Pain Visual Analog Scale

2011 ◽  
Vol 2011 ◽  
pp. 1-6 ◽  
Author(s):  
Melissa E. Stauffer ◽  
Stephanie D. Taylor ◽  
Douglas J. Watson ◽  
Paul M. Peloso ◽  
Alan Morrison
Keyword(s):  
Minimal Clinically Important Difference ◽  
Minimal Detectable Change ◽  
Detectable Change ◽  
Analog Scale ◽  
Analgesic Treatment ◽  
Clinically Important Difference ◽  
Detectable Difference ◽  
Pain Visual Analog Scale ◽  
Smallest Detectable Difference ◽  
Definition Of

Our objective was to develop a working definition of nonresponse to analgesic treatment of arthritis, focusing on the measurement of pain on the 0–100 mm pain visual analog scale (VAS). We reviewed the literature to assess the smallest detectable difference (SDD), the minimal detectable change (MDC), and the minimal clinically important difference (MCID). The SDD for improvement reported in three studies of rheumatoid arthritis was 18.6, 19.0, and 20.0. The median MDC was 25.4 for 7 studies of osteoarthritis and 5 studies of rheumatoid arthritis (calculated for a reliability coefficient of 0.85). The MCID increased with increasing baseline pain score. For baseline VAS tertiles defined by scores of 30–49, 50–65, and >65, the MCID for improvement was, respectively, 7–11 units, 19–27 units, and 29–37 units. Nonresponse can thus be defined in terms of the MDC for low baseline pain scores and in terms of the MCID for high baseline scores.

scholarly journals Reliability and Validity of the INFOOT Three-dimensional Foot Digitizer for Patients with Rheumatoid Arthritis

2011 ◽  
Vol 101 (3) ◽  
pp. 198-207 ◽  
Author(s):  
Sophie De Mits ◽  
Pascal Coorevits ◽  
Dirk De Clercq ◽  
Dirk Elewaut ◽  
James Woodburn ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Pearson Correlation ◽  
Intraclass Correlation ◽  
Three Dimensional ◽  
Correlation Coefficients ◽  
Measurement Tool ◽  
Intraclass Correlation Coefficients ◽  
Detectable Difference ◽  
Smallest Detectable Difference ◽  
Clinical Measurements

Background: Abnormal foot posture and deformities are identified as important features in rheumatoid arthritis. There is still no consensus regarding the optimum technique(s) for quantifying these features; hence, a foot digitizer might be used as an objective measurement tool. We sought to assess the validity and reliability of the INFOOT digitizer. Methods: To investigate the validity of the INFOOT digitizer compared with clinical measurements, we calculated Pearson correlation coefficients. To investigate the reliability of the INFOOT digitizer, we calculated intraclass correlation coefficients, SEMs, smallest detectable differences, and smallest detectable difference percentages. Results: Most of the 38 parameters showed good intraclass correlation coefficients, with values greater than 0.9 for 30 parameters and greater than 0.8 for seven parameters. The left heel bone angle expressed a moderate correlation, with a value of 0.609. The SEM values varied between 0.31 and 3.51 mm for the length and width measures, between 0.74 and 5.58 mm for the height data, between 0.75 and 5.9 mm for the circumferences, and between 0.78° and 2.98° for the angles. The smallest detectable difference values ranged from 0.86 to 16.36 mm for length, width, height, and circumference measures and from 2.17° to 8.26° for the angle measures. For the validity of the INFOOT three-dimensional foot digitizer, Pearson correlation coefficients varied between 0.750 and 0.997. Conclusions: In this rheumatoid arthritis population, good validity was demonstrated compared with clinical measurements, and most of the obtained parameters proved to be reliable. (J Am Podiatr Med Assoc 101(3): 198–207, 2011)

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