Evaluation of the responsiveness of goal attainment scaling in the measurement of oncology in-patients under physiotherapy treatment

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Evaluation of the responsiveness of goal attainment scaling in the measurement of oncology in-patients under physiotherapy treatment

 

Author: Liu, Yuet-ming
Title: Evaluation of the responsiveness of goal attainment scaling in the measurement of oncology in-patients under physiotherapy treatment
Degree: M.Sc.
Year: 2010
Subject: Hong Kong Polytechnic University -- Dissertations
Oncology -- Physical therapy
Goal Attainment Scaling.
Department: Dept. of Rehabilitation Sciences
Pages: xi, 79 p. : ill. ; 30 cm.
InnoPac Record: http://library.polyu.edu.hk/record=b2353064
URI: http://theses.lib.polyu.edu.hk/handle/200/5656
Abstract: Introduction: There is a lack of a responsive evaluation tool for measuring the progress of the frail oncology inpatients. While Goal Attainment Scaling (GAS) shows good reliability and responsiveness measuring progression of the frail institutionalized home elderly. the reliability and responsiveness of GAS when used in oncology patients is uncertain. The objectives of this study were: 1) to assess the inter-rater reliability and responsiveness of GAS in oncology inpatients who were undergoing physiotherapy intervention, and 2) to compare the responsiveness of GAS with Barthel Index (BI). Methods: thirty-eight oncology inpatients (22 men and 16 women), aged thirty-six to eighty-six: (mean age ± SD =65.63 ± 13.75) were recruited to participate in this study. All of them received three days of physiotherapy intervention. They were scored with GAS and BI before and after completing the 3-day treatment. Additionally, ten subjects were randomly selected from this group to receive another post-treatment scoring for the establishment of inter-rater reliability. GAS scores were converted into T scores using the formula derived by the original authors for further statistical analysis. The pre-test and post-test scores of GAS and BI were compared by using paired t-tests. Effect sizes (ES), standardized response means (SRM) were used to determine the responsiveness while relative efficiency (RF) between GAS and BI was used to compare their responsiveness. Results: High inter-rater reliability were reflected in the ICC (2,1) =0.98. Moreover, ES (1.51), SRM (0.87), and RE (214) of GAS were significantly greater than the corresponding values of BI (ES=0.04, SRM=0.06. RE=1). In addition, the post-test GAS score was significantly higher than the pre-test GAS score (paired t-test, p =0.00005, 95% CI= 5.74 -14.34) whereas the same comparison for BI was not statistically significant (p=0.75, 95% CI -4.93 -6.79). Conclusion: The results showed that the GAS has high inter-rater reliability and that it shows better responsiveness than BI. GAS is thus a useful tool for measuring changes in functional outcomes in oncology inpatients.

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