Development and validation of a new aphasia screening test for the Cantonese-speaking population
Refereed conference paper presented and published in conference proceedings

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A routine aphasia screening test which is short and easy to administer is not available in Cantonse speaking population. The aim of this study was to develop and validate a Cantonese Aphasia Screening Test (CAST).

The present study was conducted in three phases. Phase I was to determine the overall test structure through literature reviews, expert consultation and pilot study on translated FAST. Phase II was to construct test items under the four aspects of language. Phase III was the validation process in which items were tested on i)160 normal subjects, ii) 157 stroke patients with aphasia and iii) 50 stroke patients without aphasia. All subjects were also tested on the MMSE and MoCA. Obtained scores were compared with the score of CAST.

Good internal consistency with alpha coefficient values larger than 0.90 was obtained in all tests. Inter‐ and intra‐rater as well as test‐retest reliability are highly satisfactory, value of coefficients 0.997, 0.999 and 0.890 respectively. Experts were satisfied with the general content of the test items to reflex the language ability of patients with potential aphasia. Close relationship between the CAST and MMSE and MoCA were found in the current study. The construct strength was found to be high, the correlation from 0.848 to 0.96.

An item bank for further development into a new language screening tool (CAST) which encompasses important language domains was developed and validated for patients with stroke. CAST will be simple, sensitive and predictive of aphasia in patients with stroke.
All Author(s) ListCho L. S., Lee K. Y. S., Lam J. H. S., Xu K.
Name of ConferenceHong Kong Speech and Hearing Symposium 2018
Start Date of Conference01/11/2018
End Date of Conference04/11/2018
Place of ConferenceHong Kong
Country/Region of ConferenceHong Kong
Proceedings TitleHong Kong Speech and Hearing Symposium 2018
Place of PublicationHong Kong
LanguagesEnglish-United States
Keywordsspeech therapy, aphasia, Yan Chai

Last updated on 2019-21-06 at 15:00