Measurement in Medicine

Vet, H.C.W. de; Terwee, Caroline B.; Mokkink, Lidwine B.; Knol, Dirk L.

doi:10.1017/cbo9780511996214

Cited by 1,989 publications

(2,351 citation statements)

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“…Consistency between overall ACS performance (total score) was especially high. This could be expected since averaged scores generally generate higher correlations than single measurements [38,39]. Test-retest correlations were highly comparable to the highest test-retest correlations for equivalent traditional tests as reported in the literature.…”

Section: Discussionsupporting

confidence: 76%

Online Self-Administered Cognitive Testing Using the Amsterdam Cognition Scan: Establishing Psychometric Properties and Normative Data (Preprint)

Feenstra¹,

Vermeulen²,

Murre³

et al. 2017

Preprint

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BackgroundOnline tests enable efficient self-administered assessments and consequently facilitate large-scale data collection for many fields of research. The Amsterdam Cognition Scan (ACS) is a new online neuropsychological test battery which measures a broad variety of cognitive functions. ObjectiveThe aims of the present study were to evaluate the psychometric properties of the ACS and to establish regression-based normative data. MethodsThe ACS was self-administrated twice from home -with an interval of 6 weeks -by 248 healthy Dutch speaking adults aged 18 to 81 years. ResultsTest-retest reliability was moderate to high and comparable to that of equivalent traditional tests (intraclass correlation coefficients: .45 to .80, and .83 for the ACS total score). Multiple regression analyses indicated that 1) participants' age negatively influenced all (12) cognitive measures; 2) gender was associated with performance on 6 measures; and 3) education level was positively associated with performance on 4 measures. In addition, we observed an age-and gender-specific influence of computer skills on cognitive performance. Demographic characteristics that proved to influence ACS test performance were included in regression-based predictive formulas to establish demographically adjusted normative data. ConclusionsThe ACS is a promising new online tool to efficiently assess cognitive functioning for research purposes.Results from a healthy adult sample indicate that the ACS has high usability and can give reliable measures of various generic cognitive ability areas. For repeated measurements, computer configuration should be consistent. Combined with these psychometric properties, our normative data allow for initial interpretation of ACS performances.

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Section: Discussionsupporting

confidence: 76%

Online Self-Administered Cognitive Testing Using the Amsterdam Cognition Scan: Establishing Psychometric Properties and Normative Data (Preprint)

Feenstra¹,

Vermeulen²,

Murre³

et al. 2017

Preprint

View full text Add to dashboard Cite

show abstract

“…However, we expect the precision of the estimates of the parameters studied to be sufficient considering that De Vet et al (2011) recommend about 50 patients to reasonably fill a 2 9 2 table to determine the kappa value and considering that lower kappa values would require a larger sample size to reach the same confidence interval.…”

Section: Indices Of Agreementmentioning

confidence: 98%

“…Beforehand, a sample size calculation for the present study was not performed as, according to De Vet et al (2011), sample size calculations for kappa values are difficult to perform. However, we expect the precision of the estimates of the parameters studied to be sufficient considering that De Vet et al (2011) recommend about 50 patients to reasonably fill a 2 9 2 table to determine the kappa value and considering that lower kappa values would require a larger sample size to reach the same confidence interval.…”

Section: Indices Of Agreementmentioning

confidence: 99%

Concurrent validity of questions on arm, shoulder and neck symptoms of the RSI QuickScan

Hoozemans

Speklé

Dieën

2012

Int Arch Occup Environ Health

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Purpose The objective was to determine the concurrent validity of questions on arm, shoulder and neck symptoms of an Internet-based questionnaire. In addition, the interobserver reliability of physical examinations by occupational physicians was investigated. Methods A total of 160 employees of a Dutch occupational health service were approached, of which 106 participated. Right after the assessment of arm, shoulder and neck symptoms using a self-administered questionnaire, each participant was examined by two occupational physicians. The presence of symptoms in the past 7 days was compared to the physical examinations. The participation of two occupational physicians allowed us to study also the inter-observer reliability. Results Overall, the concurrent validity of the symptom questions of the questionnaire can be defined as poor to moderate with j values between 0.16 and 0.53. Detecting the presence of symptoms (p pos ) could be considered as moderately valid with values below 0.60, but the p neg shows that the concurrent validity for detecting the absence of arm, shoulder or neck symptoms can be considered sufficient with values above 0.69. The agreement between occupational physicians can, with a few exceptions, be considered as moderate with j values below 0.60. The agreement was sufficient for detecting the absence of symptoms (p neg [ 0.7). Conclusions The agreement between the symptom questions of the questionnaire and physical examinations of occupational physicians can be considered as poor to moderate. The results are comparable to what is generally reported in the literature. Future studies should be aimed at gaining more fundamental knowledge about the possible conceptual differences between self-reported symptoms and symptoms assessed using physical examinations. Moreover, it is advisable to improve the inter-observer reliability of physical examinations as applied in the present study.

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“…A sample size of 13 was required determined from a power analysis rationale, where an ICC of 0.8 and a 95% CI from 0.60-1.00 could be expected (9). Seven male and six female university students (aged 18-26) volunteered to participate in the study.…”

Section: Participantsmentioning

confidence: 99%

The use of a sphygmomanometer to measure shoulder isometric strength: a validity and reliability study

2017

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Introduction: A sphygmomanometer is an instrument commonly used to measure blood pressure that can potentially be used to objectively assess shoulder isometric muscle strength. Objective: To establish the criterion validity and the intra-rater reliability of the sphygmomanometer for the assessment of shoulder isometric muscular strength compared to the handheld dynamometer. To determine if there is a statistically significant difference for shoulder strength between dominant and non-dominant sides. Methods: A test-retest study design was developed, where a rater assessed shoulder flexion and abduction isometric strength of 13 healthy university students, using a commercially available sphygmomanometer and a handheld dynamometer. Results: The criterion validity of the sphygmomanometer was found to be good for both right and left shoulder flexion and abduction strength assessment (Pearson's r = 0.90-0.97). The intra-rater reliability of the sphygmomanometer was calculated to be good for both right and left flexion and abduction (ICC = 0.96-0.99). The handheld dynamometer also showed good intra-rater reliability for each of the strength measures assessed (ICC = 0.94-0.98). Significant differences (p < 0.01) were identified between dominant and non-dominant sides for shoulder strength. Conclusion: A sphygmomanometer is a simple and easily accessible tool that provides clinicians with accurate objective values for isometric shoulder strength assessment.

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Measurement in Medicine

Cited by 1,989 publications

References 0 publications

Online Self-Administered Cognitive Testing Using the Amsterdam Cognition Scan: Establishing Psychometric Properties and Normative Data (Preprint)

Online Self-Administered Cognitive Testing Using the Amsterdam Cognition Scan: Establishing Psychometric Properties and Normative Data (Preprint)

Concurrent validity of questions on arm, shoulder and neck symptoms of the RSI QuickScan

The use of a sphygmomanometer to measure shoulder isometric strength: a validity and reliability study

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