Authors (including presenting author) :
Chan WS(1),Wong KK(2),Ng PC(3),Fung KY(4),Chan CS(5),Lung KC(6),Wu SW(6)
Affiliation :
(1)Occupational Therapy Department, Tung Wah Hospital,
(2)Department of Rehabilitation Sciences, The Hong Kong Polytechnic University,
(3)Occupational Therapy Department, Prince of Wales Hospital,
(4)Occupational Therapy Department, Tung Wah Eastern Hospital,
(5)Occupational Therapy Department, Grantham Hospital,
(6)Occupational Therapy Department, United Christian Hospital
Introduction :
The interview-based Specific Activity Scale (SAS) was developed by Goldman in 1981. SAS classified cardiac patients into four functional classes based on ability in performing the specific activities with symptom consideration. This tool is used in evaluating the functional performance in cardiac rehabilitation program but it has not been translated into Chinese language.
Objectives :
The objective is to study concurrent validity and test-retest reliability of the Specific Activity Scale Hong Kong Chinese version (SASHKCV) on patients with heart diseases in Hong Kong. Further the correlation between functional class from SASHKCV and Metabolic Equivalent (MET) from stress test is investigated.
Methodology :
This was a prospective study where cardiac daypatients and outpatients were recruited in cardiac rehabilitation centres. SASHKCV was conducted twice within 7 days. MET in stress test was collected within study period. Intraclass Correlation Coefficient was used for test-retest reliability. Pearson Correlation Coefficient was used for correlation.
Result & Outcome :
179 patients had completed the SASHKCV and stress test. Patients with recent
Myocardial Infarction (MI) during initial assessment were classified as MI group. The other cardiac patients were sorted into non-MI group. The results of the test-retest reliability of the MI group was 0.948 (p< 0.001), and that of the non-MI group was 0.933 (p< 0.001). Total group correlation was 0.944 (p< 0.001). Furthermore, the correlation between the functional class of SASHKCV and MET in MI group was 0.459 (p< 0.001) and non-MI group was 0.536 (p< 0.001). Overall correlation coefficient was 0.496 (p< 0.001).
SASHKCV is a valid and reliable tool in evaluating the functional performance of cardiac patients. There is a moderate correlation between the functional class of SASHKCV and MET achieved from stress test. Furthermore, SASHKCV can serve as outcome measure for cardiac rehabilitation program.
(published in Journal of the Hong Kong College of Cardiology 2020;28:51-58)
