Development of a reliable self-report outcome measure for pragmatic trials of communication therapy following stroke:Citation formats

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Development of a reliable self-report outcome measure for pragmatic trials of communication therapy following stroke: The Communication Outcome after Stroke (COAST) scale. / The ACT NoW Study.

In: Clinical Rehabilitation, Vol. 22, No. 12, 2008, p. 1083-1094.

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@article{440434c54e9b42d99ef122a4d1cf07a3,
title = "Development of a reliable self-report outcome measure for pragmatic trials of communication therapy following stroke:: The Communication Outcome after Stroke (COAST) scale",
abstract = "Objective: To develop and validate a clinically feasible measure of communication effectiveness for people with any type of communication problem following stroke. Design: Cross-sectional, interview-based, psychometric study, building on the development phase for construction of the Communication Outcome after Stroke (COAST) scale. Setting: A community sample from the northwest of England, UK. Subjects: One hundred and two people with communication problems (aphasia and/or dysarthria) following a stroke, within the previous 4-12 months. Interventions: Administration of the COAST scale, on two occasions, within a two-week period, and collection of demographic and other data relating to disability, degree of aphasia (where appropriate) and hospital diagnosis of aphasia/dysarthria. Main measures: Acceptability (missing values), reliability (internal consistency and test-retest reliability) and item analysis (item redundancy). Results: Ninety-seven (visit 1) and 98 (visit 2) respondents provided usable data for the psychometric analysis. The 29-item COAST scale showed good acceptability (few missing values, sample spread 28-100{\%}), internal consistency and test-retest reliability for the scale (α = 0.95; ICC = 0.90) and its subscales (α = 0.65-0.93; ICC = 0.72-0.88), but possible item redundancy. A revised scale of 20 items was produced, demonstrating good internal consistency and test-retest reliability (α = 0.83-92; ICC = 0.72-0.88). Conclusions: The COAST is a patient-centred, practical and reliable measure that can be used to assess self-perceived communication effectiveness for people with aphasia and/or dysarthria. Further testing on construct validity and responsiveness to change is needed before the measure can be firmly recommended for use within clinical practice and research. {\circledC} 2008 SAGE Publications.",
author = "Long, {Andrew F.} and A. Hesketh and G. Paszek and M. Booth and A. Bowen and {The ACT NoW Study} and Emma Patchwood",
year = "2008",
doi = "10.1177/0269215508090091",
language = "English",
volume = "22",
pages = "1083--1094",
journal = "Clinical Rehabilitation",
issn = "0269-2155",
publisher = "Sage Publications Ltd.",
number = "12",

}

RIS

TY - JOUR

T1 - Development of a reliable self-report outcome measure for pragmatic trials of communication therapy following stroke:

T2 - The Communication Outcome after Stroke (COAST) scale

AU - Long, Andrew F.

AU - Hesketh, A.

AU - Paszek, G.

AU - Booth, M.

AU - Bowen, A.

AU - The ACT NoW Study

A2 - Patchwood, Emma

PY - 2008

Y1 - 2008

N2 - Objective: To develop and validate a clinically feasible measure of communication effectiveness for people with any type of communication problem following stroke. Design: Cross-sectional, interview-based, psychometric study, building on the development phase for construction of the Communication Outcome after Stroke (COAST) scale. Setting: A community sample from the northwest of England, UK. Subjects: One hundred and two people with communication problems (aphasia and/or dysarthria) following a stroke, within the previous 4-12 months. Interventions: Administration of the COAST scale, on two occasions, within a two-week period, and collection of demographic and other data relating to disability, degree of aphasia (where appropriate) and hospital diagnosis of aphasia/dysarthria. Main measures: Acceptability (missing values), reliability (internal consistency and test-retest reliability) and item analysis (item redundancy). Results: Ninety-seven (visit 1) and 98 (visit 2) respondents provided usable data for the psychometric analysis. The 29-item COAST scale showed good acceptability (few missing values, sample spread 28-100%), internal consistency and test-retest reliability for the scale (α = 0.95; ICC = 0.90) and its subscales (α = 0.65-0.93; ICC = 0.72-0.88), but possible item redundancy. A revised scale of 20 items was produced, demonstrating good internal consistency and test-retest reliability (α = 0.83-92; ICC = 0.72-0.88). Conclusions: The COAST is a patient-centred, practical and reliable measure that can be used to assess self-perceived communication effectiveness for people with aphasia and/or dysarthria. Further testing on construct validity and responsiveness to change is needed before the measure can be firmly recommended for use within clinical practice and research. © 2008 SAGE Publications.

AB - Objective: To develop and validate a clinically feasible measure of communication effectiveness for people with any type of communication problem following stroke. Design: Cross-sectional, interview-based, psychometric study, building on the development phase for construction of the Communication Outcome after Stroke (COAST) scale. Setting: A community sample from the northwest of England, UK. Subjects: One hundred and two people with communication problems (aphasia and/or dysarthria) following a stroke, within the previous 4-12 months. Interventions: Administration of the COAST scale, on two occasions, within a two-week period, and collection of demographic and other data relating to disability, degree of aphasia (where appropriate) and hospital diagnosis of aphasia/dysarthria. Main measures: Acceptability (missing values), reliability (internal consistency and test-retest reliability) and item analysis (item redundancy). Results: Ninety-seven (visit 1) and 98 (visit 2) respondents provided usable data for the psychometric analysis. The 29-item COAST scale showed good acceptability (few missing values, sample spread 28-100%), internal consistency and test-retest reliability for the scale (α = 0.95; ICC = 0.90) and its subscales (α = 0.65-0.93; ICC = 0.72-0.88), but possible item redundancy. A revised scale of 20 items was produced, demonstrating good internal consistency and test-retest reliability (α = 0.83-92; ICC = 0.72-0.88). Conclusions: The COAST is a patient-centred, practical and reliable measure that can be used to assess self-perceived communication effectiveness for people with aphasia and/or dysarthria. Further testing on construct validity and responsiveness to change is needed before the measure can be firmly recommended for use within clinical practice and research. © 2008 SAGE Publications.

U2 - 10.1177/0269215508090091

DO - 10.1177/0269215508090091

M3 - Article

VL - 22

SP - 1083

EP - 1094

JO - Clinical Rehabilitation

JF - Clinical Rehabilitation

SN - 0269-2155

IS - 12

ER -