Introduction to health measurement scales

Keszei, András; Novák, Márta; Streiner, David L.

doi:10.1016/j.jpsychores.2010.01.006

Cited by 365 publications

(469 citation statements)

References 11 publications

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“…Furthermore, a scale's validity is better assessed and improved when scores are assigned within multi‐item scales 32. We therefore recommend that a group of experts gather to discuss and refine the observations of horses with neurologic gait deficits30 based on a series of standardized videos of horses with confirmed spinal cord disease. A multi‐item scale with ordinal ratings and with simplified and reliable descriptions of clinical observations of gait could be the aim of such an expert panel and examination components in this study with relatively higher reproducibility could be used as a foundation.…”

Section: Discussionmentioning

confidence: 99%

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Rater Agreement on Gait Assessment during Neurologic Examination of Horses

Olsen

Dunkel

Barker

et al. 2014

Veterinary Internal Medicne

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BackgroundReproducible and accurate recognition of presence and severity of ataxia in horses with neurologic disease is important when establishing a diagnosis, assessing response to treatment, and making recommendations that might influence rider safety or a decision for euthanasia.ObjectivesTo determine the reproducibility and validity of the gait assessment component in the neurologic examination of horses.AnimalsTwenty‐five horses referred to the Royal Veterinary College Equine Referral Hospital for neurological assessment (n = 15), purchased (without a history of gait abnormalities) for an unrelated study (n = 5), or donated because of perceived ataxia (n = 5).MethodsUtilizing a prospective study design; a group of board‐certified medicine (n = 2) and surgery (n = 2) clinicians and residents (n = 2) assessed components of the equine neurologic examination (live and video recorded) and assigned individual and overall neurologic gait deficit grades (0–4). Inter‐rater agreement and assessment‐reassessment reliability were quantified using intraclass correlation coefficients (ICC).ResultsThe ICCs of the selected components of the neurologic examination ranged from 0 to 0.69. “Backing up” and “recognition of mistakes over obstacle” were the only components with an ICC > 0.6. Assessment‐reassessment agreement was poor to fair. The agreement on gait grading was good overall (ICC = 0.74), but poor for grades ≤ 1 (ICC = 0.08) and fair for ataxia grades ≥ 2 (ICC = 0.43). Clinicians with prior knowledge of a possible gait abnormality were more likely to assign a grade higher than the median grade.Conclusion and Clinical ImportanceClinicians should be aware of poor agreement even between skilled observers of equine gait abnormalities, especially when the clinical signs are subtle.

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Section: Discussionmentioning

confidence: 99%

“…The variation between assessments was primarily attributed to variation because of time of assessment5, 30 resulting in Equation 3 (Data S1).…”

Section: Methodsmentioning

confidence: 99%

Rater Agreement on Gait Assessment during Neurologic Examination of Horses

Olsen

Dunkel

Barker

et al. 2014

Veterinary Internal Medicne

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“…The intraobserver reproducibility of all of the measurements performed was tested and quantified by the intraclass correlation coefficient (ICC) and a median error for a single measurement (SEM) [26]. To estimate the sample size needed to test the intraobserver reproducibility of all of the measurements we treated the ICC value greater than 0.7 (with its 95 % confidence interval of 0.55-0.85) as acceptable reproducibility for a research tool [27]. Thus, the minimum number of subjects to test the intraobserver reproducibility (2 series of measurements performed by 1 researcher) was 46 [28].…”

Section: Subjectsmentioning

confidence: 99%

Comparison of radiographic sagittal spinopelvic alignment between skeletally immature and skeletally mature individuals with Scheuermann’s disease

et al. 2014

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“…The Pearson's linear correlation coefficient (r) of less than 0.3 was considered as negligible correlation, 0.3-0.5 as low, 0.5-0.7 as medium, 0.7-0.9 as high, and 0.9-1.0 as very high correlation [15]. The ICC value[0.7 reflected acceptable reproducibility for a research tool [16].…”

Section: Ylikoski Methodsmentioning

confidence: 99%

Calculation of corrected body height in idiopathic scoliosis: comparison of four methods

et al. 2014

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Purpose The aim of the study was to analyze four radiographic methods of calculating the loss of body height associated with scoliosis. Methods Thirty patients with right thoracic idiopathic scoliosis were examined with standing postero-anterior radiographs. Cobb angles of the upper thoracic, main thoracic and lumbar curves were measured. The loss of body height due to scoliosis was measured directly on the radiographs and then calculated using the methods of Bjure, Kono, Stokes and Ylikoski, respectively. The reproducibility of calculations was tested. Detailed analysis of two patients with similar Cobb angle but different trunk height was performed. Results The mean Cobb angle of the main thoracic curve was 46°(21°-74°). The mean loss of body height was 23 mm (11-43 mm) calculated by method of Bjure, 7 mm (-24 to 46 mm) by Kono, 20 mm (5-47 mm) by Stokes, 14 mm (3-36 mm) by Ylikoski, versus 18 mm (3-50 mm) measured directly on radiographs. The overall difference between the loss of body heights was significant (p \ 0.0001), with significant differences in pairs for: Bjure versus Kono (p \ 0.0001), Stokes versus Kono (p = 0.0002), Kono versus measured (p = 0.0061) and Bjure versus Ylikoski (p = 0.0386). Strong linear correlation between the methods was found (r C 0.92; p \ 0.0001). High reproducibility of height loss calculations was noticed. The two patients with similar Cobb angle and different trunk height revealed similar height loss calculated, while different loss measured on radiographs. Conclusions There existed no overall agreement between the four methods of calculation of the loss of body height associated with scoliosis. Calculations based on the Cobb angle produced inaccuracy and could be supplemented with data considering trunk size.

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Introduction to health measurement scales

Cited by 365 publications

References 11 publications

Rater Agreement on Gait Assessment during Neurologic Examination of Horses

Rater Agreement on Gait Assessment during Neurologic Examination of Horses

Comparison of radiographic sagittal spinopelvic alignment between skeletally immature and skeletally mature individuals with Scheuermann’s disease

Calculation of corrected body height in idiopathic scoliosis: comparison of four methods

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