Development of a Tablet-based symbol digit modalities test for reliably assessing information processing speed in patients with stroke

doi:10.3109/09638288.2015.1111438

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Title:	Development of a Tablet-based symbol digit modalities test for reliably assessing information processing speed in patients with stroke
Authors:	Tung, Li-Chen Yu, Wan-Hui Lin, Gong-Hong Yu, Tzu-Ying Wu, Chien-Te Tsai, Chia-Yin Chou, Willy Chen, Mei-Hsiang Hsieh, Ching-Lin
Contributors:	Chi Mei Med Ctr, Dept Phys Med & Rehabil Natl Taiwan Univ, Sch Occupat Therapy, Coll Med I Shou Univ, Dept Occupat Therapy Natl Taiwan Univ Hosp, Dept Psychiat I Shou Univ, E Da Hosp, Dept Phys Med & Rehabil Chia Nan Univ Pharm, Dept Recreat & Hlth Care Management Chung Shan Med Univ, Sch Occupat Therapy Chung Shan Med Univ Hosp, Occupat Therapy Room Natl Taiwan Univ Hosp, Dept Phys Med & Rehabil
Keywords:	Information processing speed practise effect random measurement error stroke Symbol Digit Modalities Test
Date:	2016
Issue Date:	2018-01-18 11:37:46 (UTC+8)
Publisher:	Taylor & Francis Ltd
Abstract:	Purpose: To develop a Tablet-based Symbol Digit Modalities Test (T-SDMT) and to examine the test-retest reliability and concurrent validity of the T-SDMT in patients with stroke. Methods: The study had two phases. In the first phase, six experts, nine college students and five outpatients participated in the development and testing of the T-SDMT. In the second phase, 52 outpatients were evaluated twice (2 weeks apart) with the T-SDMT and SDMT to examine the test-retest reliability and concurrent validity of the T-SDMT. Results: The T-SDMT was developed via expert input and college student/patient feedback. Regarding test-retest reliability, the practise effects of the T-SDMT and SDMT were both trivial (d = 0.12) but significant (p <= 0.015). The improvement in the T-SDMT (4.7%) was smaller than that in the SDMT (5.6%). The minimal detectable changes (MDC%) of the T-SDMT and SDMT were 6.7 (22.8%) and 10.3 (32.8%), respectively. The T-SDMT and SDMT were highly correlated with each other at the two time points (Pearson's r = 0.90-0.91). Conclusions: The T-SDMT demonstrated good concurrent validity with the SDMT. Because the T-SDMT had a smaller practise effect and less random measurement error (superior test-retest reliability), it is recommended over the SDMT for assessing information processing speed in patients with stroke.
Relation:	Disability and Rehabilitation, v.38 n.19, pp.1952-1960
Appears in Collections:	[Dept. of Recreation and Health-Care Management] Periodical Articles

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