Article

OBJECTIVES: To develop a computerized Digit Vigilance Test (C-DVT) with lower
random measurement error than that of the DVT and to examine the concurrent
validity, ecological validity, and test-retest reliability of the C-DVT in
patients with stroke. DESIGN: A cross-sectional study. PATIENTS: Forty-four
patients with stroke. METHODS: We developed and tested the C-DVT. To examine the
psychometric properties, the participants completed both the C-DVT and DVT twice
with a 14-day interval. RESULTS: We developed the C-DVT on the basis of expert
input and examinee feedback. C-DVT scores were highly correlated with DVT scores
(rho = 0.75), supporting the concurrent validity. The C-DVT scores were
moderately correlated with the scores of the Barthel Index and the Activities of
Daily Living Computerized Adaptive Testing system (rho = -0.60~-0.57), supporting
the ecological validity. The test-retest agreement of the C-DVT was excellent
(intra-class correlation coefficient = 0.92). The random measurement error of the
C-DVT (minimal detectable change percent change (MDC%) = 15.4%) was acceptable
and lower than that of the DVT (33.0%). The practice effects of the C-DVT were
statistically significant, but the effect size d was small (0.15). CONCLUSION: A
C-DVT with a limited amount of random measurement error was developed. These
preliminary findings show that the C-DVT demonstrates satisfactory concurrent
validity, ecological validity, and test-retest reliability in patients with
stroke.

Langue : ANGLAIS