Faculty Collaboration Database

King-Devick Test Time Varies by Testing Modality. Clin J Sport Med 2020 Sep;30(5):e139-e142

Date

10/26/2018

Pubmed ID

30358616

DOI

10.1097/JSM.0000000000000691

Scopus ID

2-s2.0-85090545749 (requires institutional sign-in at Scopus site)   9 Citations

Abstract

OBJECTIVE: To explore differences in baseline King-Devick Test (KD) completion time between 2 testing modalities: (1) spiral-bound paper cards (cards) and (2) iPad application (iPad).

DESIGN: Cross-sectional cohort analysis.

SETTING: National Collegiate Athlete Association (NCAA) institutions.

PARTICIPANTS: Student athletes from 13 women's and 11 men's collegiate sports who completed KD baseline testing as part of their first year in the Concussion Assessment, Research and Education (CARE) Consortium from 2014 to 2016 (n = 2003, 52.2% male).

INDEPENDENT VARIABLES: King-Devick Test modalities; cards or iPad.

MAIN OUTCOME MEASURE: Baseline KD completion time (seconds).

RESULTS: Mean baseline KD completion time of the iPad modality group [42.8 seconds, 95% confidence interval (CI), 42.1-43.3] was 2.8 seconds (95% CI, 2.1-3.4) greater than the cards group (40.0 seconds, 95% CI, 39.7-40.3) (t(1, 1010.7) = -8.0, P < 0.001, Cohen's d = 0.41).

CONCLUSIONS: Baseline KD performance is slower when tested on an iPad than when tested on spiral-bound paper cards. The 2 KD modalities should not be used interchangeably in concussion assessments because differences in the modalities can lead to time differences similar in magnitude to those used to indicate concussion. From a research perspective, modality may influence interpretation and/or synthesis of findings across studies.

Author List

Clugston JR, Chrisman SPD, Houck ZM, Asken BM, Boone JK, Buckley TA, Hoffman NL, Schmidt JD, Kontos AP, Jaffee MS, Harmon KG, Broglio SP, McCrea MA, McAllister TW, Ortega JD

Author

Michael McCrea PhD Professor in the Neurosurgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Athletes
Athletic Injuries
Brain Concussion
Confidence Intervals
Cross-Sectional Studies
Female
Humans
Male
Minicomputers
Neuropsychological Tests
Paper
Students
Time Factors
Young Adult