Test-Retest Reliability of Standard Deviation of Lane Position as Assessed on a PC-Based Driving Simulator

Objective To determine a methodology for the analysis of real-time driving posture data in the low back pain population. Background The strength of the relationship between driving posture and low back pain is yet to be defined due to the lack of studies in the field using validated and repeatable posture measurement tools. Reliable and validated real-time measurement tools are now available, yet reliable methods of analysis of these data are yet to be established. Method Ten occupational drivers completed a typical work shift while wearing an inertial motion sensor system (dorsaVi ViMove). Real-time lumbar flexion data were extracted, with test–retest reliability of mean lumbar flexion, peak lumbar flexion, and standard deviation of lumbar flexion analysed at different times across a work shift, and in different sections within a drive. Results Mean lumbar flexion was highly repeatable over numerous drives in one day, with greater test–retest reliability if the first five minutes of driving data were excluded. Peak lumbar flexion had acceptable test-retest reliability over numerous drives in one day, while standard deviation of lumbar flexion was not a repeatable measure. Conclusion Mean lumbar flexion was a reliable outcome for characterising driving posture in drivers with low back pain. Peak lumbar flexion may be used if appropriate to the individual study. Standard deviation of lumbar flexion is not a reliable posture outcome. Application This paper provides a reliable methodology for analysis of real-time driving posture data in occupational drivers with low back pain.

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Establishing a normal range model using real time events, driving simulator (MiniUoLDS) outcome and performance based on standard deviation of lane position (SDLP) in untreated OSAS patients and controls

10.1183/13993003.congress-2016.oa4793 ◽

2016 ◽

Author(s):

Akshay Dwarakanath ◽

Dipansu Ghosh ◽

Samantha Jamson ◽

Paul Baxter ◽

Mark Elliott

Keyword(s):

Standard Deviation ◽

Real Time ◽

Driving Simulator ◽

Normal Range ◽

Lane Position ◽

And Performance

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Measuring Correlates of Mental Workload During Simulated Driving Using cEEGrid Electrodes: A Test–Retest Reliability Analysis

Frontiers in Neuroergonomics ◽

10.3389/fnrgo.2021.729197 ◽

2021 ◽

Vol 2 ◽

Author(s):

Stephan Getzmann ◽

Julian E. Reiser ◽

Melanie Karthaus ◽

Georg Rudinger ◽

Edmund Wascher

Keyword(s):

Driving Simulator ◽

Mental Workload ◽

Ecological Validity ◽

Internal Validity ◽

Steering Wheel ◽

Mental Processes ◽

Retest Reliability ◽

Frequency Bands ◽

Theta Frequency ◽

Test Retest Reliability

The EEG reflects mental processes, especially modulations in the alpha and theta frequency bands are associated with attention and the allocation of mental resources. EEG has also been used to study mental processes while driving, both in real environments and in virtual reality. However, conventional EEG methods are of limited use outside of controlled laboratory settings. While modern EEG technologies offer hardly any restrictions for the user, they often still have limitations in measurement reliability. We recently showed that low-density EEG methods using film-based round the ear electrodes (cEEGrids) are well-suited to map mental processes while driving a car in a driving simulator. In the present follow-up study, we explored aspects of ecological and internal validity of the cEEGrid measurements. We analyzed longitudinal data of 127 adults, who drove the same driving course in a virtual environment twice at intervals of 12–15 months while the EEG was recorded. Modulations in the alpha and theta frequency bands as well as within behavioral parameters (driving speed and steering wheel angular velocity) which were highly consistent over the two measurement time points were found to reflect the complexity of the driving task. At the intraindividual level, small to moderate (albeit significant) correlations were observed in about 2/3 of the participants, while other participants showed significant deviations between the two measurements. Thus, the test-retest reliability at the intra-individual level was rather low and challenges the value of the application for diagnostic purposes. However, across all participants the reliability and ecological validity of cEEGrid electrodes were satisfactory in the context of driving-related parameters.

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Test-Retest Reliability of the Profile of Hearing Aid Performance

Journal of Speech Language and Hearing Research ◽

10.1044/jshr.3705.1211 ◽

1994 ◽

Vol 37 (5) ◽

pp. 1211-1215 ◽

Cited By ~ 5

Author(s):

Charles T. Nelson ◽

Catherine V. Palmer

Keyword(s):

Hearing Loss ◽

Standard Deviation ◽

Background Noise ◽

Hearing Aid ◽

Critical Difference ◽

Retest Reliability ◽

Rehabilitative Treatment ◽

The Mean ◽

Using Data ◽

Test Retest Reliability

This study was designed to replicate the test-retest reliability and critical difference components of the Profile of Hearing Aid Performance (PHAP) as established by Cox and Gilmore (1990). Subjects were 18 experienced hearing aid users ranging in age from 62 to 74 years old. The initial and retest administrations of the PHAP were conducted with no rehabilitative treatment pertaining to hearing loss or amplification provided during the intervening period. The interval between the first and second administrations of the profile was 4–5 months. The mean test-retest difference scores obtained in this investigation were small, not unlike those reported by Cox and Gilmore (1990). Critical difference (CD) values closely approximated those of the previous study except for the Background Noise subscale and the Environment C scale. A pooled estimate of each standard deviation of test-retest differences was computed using data from both investigations. This resulted in critical differences considered to be more precise than the CD values derived from either study alone. Findings strongly support the utility of the PHAP as an effective tool for generating reliable information regarding self-perceived hearing aid performance.

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Measuring “Language Access Profiles” in Deaf and Hard-of-Hearing Children With the DHH Language Exposure Assessment Tool

Journal of Speech Language and Hearing Research ◽

10.1044/2020_jslhr-20-00439 ◽

2020 ◽

pp. 1-25

Author(s):

Matthew L. Hall ◽

Stephanie De Anda

Keyword(s):

Cluster Analysis ◽

Exposure Assessment ◽

Hard Of Hearing ◽

Assessment Tool ◽

Communication Mode ◽

Developmental Potential ◽

Language Access ◽

Retest Reliability ◽

Language Exposure ◽

Test Retest Reliability

Purpose The purposes of this study were (a) to introduce “language access profiles” as a viable alternative construct to “communication mode” for describing experience with language input during early childhood for deaf and hard-of-hearing (DHH) children; (b) to describe the development of a new tool for measuring DHH children's language access profiles during infancy and toddlerhood; and (c) to evaluate the novelty, reliability, and validity of this tool. Method We adapted an existing retrospective parent report measure of early language experience (the Language Exposure Assessment Tool) to make it suitable for use with DHH populations. We administered the adapted instrument (DHH Language Exposure Assessment Tool [D-LEAT]) to the caregivers of 105 DHH children aged 12 years and younger. To measure convergent validity, we also administered another novel instrument: the Language Access Profile Tool. To measure test–retest reliability, half of the participants were interviewed again after 1 month. We identified groups of children with similar language access profiles by using hierarchical cluster analysis. Results The D-LEAT revealed DHH children's diverse experiences with access to language during infancy and toddlerhood. Cluster analysis groupings were markedly different from those derived from more traditional grouping rules (e.g., communication modes). Test–retest reliability was good, especially for the same-interviewer condition. Content, convergent, and face validity were strong. Conclusions To optimize DHH children's developmental potential, stakeholders who work at the individual and population levels would benefit from replacing communication mode with language access profiles. The D-LEAT is the first tool that aims to measure this novel construct. Despite limitations that future work aims to address, the present results demonstrate that the D-LEAT represents progress over the status quo.

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Visual-Neural Correlate of Speechreading Ability in Normal-Hearing Adults

Journal of Speech Language and Hearing Research ◽

10.1044/jshr.2504.521 ◽

1982 ◽

Vol 25 (4) ◽

pp. 521-527 ◽

Cited By ~ 7

Author(s):

David C. Shepherd

Keyword(s):

Normal Hearing ◽

Wave Form ◽

Firing Time ◽

Neural Firing ◽

Neural Correlate ◽

Retest Reliability ◽

Repeated Word ◽

Negative Peak ◽

The Stability ◽

Test Retest Reliability

In 1977, Shepherd and colleagues reported significant correlations (–.90, –.91) between speechreading scores and the latency of a selected negative peak (VN 130 measure) on the averaged visual electroencephalic wave form. The primary purpose of this current study was to examine the stability, or repeatability, of this relation between these cognitive and neurophysiologic measures over a period of several months and thus support its test-retest reliability. Repeated speechreading word and sentence scores were gathered during three test-retest sessions from each of 20 normal-hearing adults. An average of 56 days occurred from the end of one to the beginning of another speechreading sessions. During each of four other test-retest sessions, averaged visual electroencephalic responses (AVER s ) were evoked from each subject. An average of 49 clays intervened between AVER sessions. Product-moment correlations computed among repeated word scores and VN l30 measures ranged from –.61 to –.89. Based on these findings, it was concluded that the VN l30 measure of visual neural firing time is a reliable correlate of speech-reading in normal-hearing adults.

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Test-Retest Reliability of a Self-Report Questionnaire for DSM-IV and ICD-10 Personality Disorders

European Journal of Psychological Assessment ◽

10.1027//1015-5759.16.1.53 ◽

2000 ◽

Vol 16 (1) ◽

pp. 53-58 ◽

Cited By ~ 11

Author(s):

Hans Ottosson ◽

Martin Grann ◽

Gunnar Kullgren

Keyword(s):

Personality Disorder ◽

Anxiety Disorders ◽

Personality Disorders ◽

Clinical Sample ◽

Self Report ◽

Anxiety State ◽

Short Term ◽

Retest Reliability ◽

Axis I ◽

Test Retest Reliability

Summary: Short-term stability or test-retest reliability of self-reported personality traits is likely to be biased if the respondent is affected by a depressive or anxiety state. However, in some studies, DSM-oriented self-reported instruments have proved to be reasonably stable in the short term, regardless of co-occurring depressive or anxiety disorders. In the present study, we examined the short-term test-retest reliability of a new self-report questionnaire for personality disorder diagnosis (DIP-Q) on a clinical sample of 30 individuals, having either a depressive, an anxiety, or no axis-I disorder. Test-retest scorings from subjects with depressive disorders were mostly unstable, with a significant change in fulfilled criteria between entry and retest for three out of ten personality disorders: borderline, avoidant and obsessive-compulsive personality disorder. Scorings from subjects with anxiety disorders were unstable only for cluster C and dependent personality disorder items. In the absence of co-morbid depressive or anxiety disorders, mean dimensional scores of DIP-Q showed no significant differences between entry and retest. Overall, the effect from state on trait scorings was moderate, and it is concluded that test-retest reliability for DIP-Q is acceptable.

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