Getting More from the Literature: Estimating the Standard Error of Measurement from Reliability Studies

Stratford, Paul W.

doi:10.2310/6640.2004.15377

Cited by 259 publications

(160 citation statements)

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“…We calculated coefficients of variation (CVs) for the 6MWT and 10mWT between day 1 and day 2 to examine within-subject variability. SEM was calculated for the SAM using the formula s (1 -r) -1 , where s = SD of the test and r = reliability coefficient of the test [25][26].…”

Section: Resultsmentioning

confidence: 99%

Step Activity Monitor: Accuracy and test-retest reliability in persons with incomplete spinal cord injury

Bowden¹,

Behrman²

2007

JRRD

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Abstract-Recovery of walking after incomplete spinal cord injury (iSCI) is a common focus of rehabilitation, but few measurement tools capture walking performance outside the clinic or laboratory. This study determined the accuracy and testretest reliability of the Step Activity Monitor (SAM), a microprocessor-driven accelerometer that measures walking activity. We evaluated 11 individuals with iSCI during replicate 6-minute walk tests (6MWTs) and 10-meter walk tests (10mWTs) scheduled <1 week apart. The SAM was 97% accurate compared with hand-tallied step counts. SAM values were stable across repeated walking performances (intraclass correlation coefficient = 0.97-0.99). Standard error of measurement values were 6.0 steps and 0.8 steps for the 6MWT and 10mWT, respectively. Ninety-five percent confidence intervals were 203.7 to 177.0 steps for the 6MWT and 16.1 to 12.7 steps for the 10mWT. The SAM is an accurate and reliable device for capturing walking activity in individuals with iSCI.

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Section: Resultsmentioning

confidence: 99%

Step Activity Monitor: Accuracy and test-retest reliability in persons with incomplete spinal cord injury

Bowden¹,

Behrman²

2007

JRRD

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“…a statistical estimate of the smallest detectable change corresponding to change in ability) [41,42]. These cannot be calculated from Evaluation of Daily Activity Questionnaire domain scores which are summed from ordinal data [43].…”

Section: Statistical Analysesmentioning

confidence: 99%

The psychometric properties of the Evaluation of Daily Activity Questionnaire in seven musculoskeletal conditions

Hammond

Prior

Horton

et al. 2017

Disability and Rehabilitation

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“…According to Beckerman et al (2001) and Stratford (2004), the SEM represents the within-subject reliability of the measure and, consequently, the reliability of the measure (Beckerman et al, 2001;Stratford, 2004). The SEM was determined using the following formula: SEM = √MSE, where MSE = mean square error.…”

Section: Reliability Analysesmentioning

confidence: 99%

Comparison of transcranial magnetic stimulation measures obtained at rest and under active conditions and their reliability

Ngomo

Léonard

Moffet

et al. 2012

Journal of Neuroscience Methods

141

143

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Getting More from the Literature: Estimating the Standard Error of Measurement from Reliability Studies

Cited by 259 publications

References 0 publications

Step Activity Monitor: Accuracy and test-retest reliability in persons with incomplete spinal cord injury

Step Activity Monitor: Accuracy and test-retest reliability in persons with incomplete spinal cord injury

The psychometric properties of the Evaluation of Daily Activity Questionnaire in seven musculoskeletal conditions

Comparison of transcranial magnetic stimulation measures obtained at rest and under active conditions and their reliability

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