Results from hierarchical regressions demonstrating cognitive performance via individual command and copy digitally-acquired clock drawing test predictors of length of stay and cost of care
|Outcome variable||Clock variable||Standardized beta||t||Sig.|
|Length of stay||Command|
|Total time to completion (seconds)||0.24||2.6||0.011|
|Ideal digit placement difference (degrees)||0.12||−0.13||0.901|
|Hour hand distance from center (millimeters)||−0.03||−0.27||0.787|
|Total time to completion (seconds)||0.23||2.49||0.014|
|Ideal digit placement difference (degrees)||0.17||1.93||0.057|
|Hour hand distance from center (millimeters)||0.22||2.57||0.011|
|Cost of care||Command|
|Time to completion (seconds)||0.18||1.94||0.055|
|Ideal digit placement difference (degrees)||−0.06||−0.6||0.548|
|Hour hand distance from center (millimeters)||−0.02||0.19||0.852|
|Time to completion (seconds)||0.27||2.78||0.006|
|Ideal digit placement difference (degrees)||0.16||1.72||0.088|
|Hour hand distance from center (millimeters)||0.18||1.95||0.054|
t: t-value; Sig.: significance (P-value)
MEW, GJA, PT, and CCP contributed to study concept, MEW, CD, KMH, PT, DJL, and CCP contributed to manuscript preparation. MEW, CD, EF, AD, SA, KMH, RD, DP, CWG, GJA, PT, DJL, and CCP contributed to manuscript revisions. EF, AD, SA, GJA, PT, and CCP contributed to data acquisition. MEW, CD, CWG, PT, DJL, and CCP contribute to statistical analyses. MEW and EF contributed to figure preparation. All authors read and approved the submitted version.
Drs. Dana Penney and Randall Davis are the creators of the digital CDT and previously owned stock in this company, and Dr. David Libon previously owned stock in Digital Cognition Technology.
This study was institutional review board-approved with Health Insurance Portability and Accountability Act (HIPAA) waiver and honest broker medical record extraction. The study followed Declaration of Helsinki standards and was in accordance with all institutional guidelines and acceptable research standards. This manuscript adheres to the applicable STROBE guidelines.
The authors have obtained and archived written informed consent from all participants in the study, with proof of consent available upon request.
Data are available upon reasonable request to the corresponding author.
Funding Sources: National Institute of Health R01 NR014181, National Science Foundation NSF 13-543, National Institute of Health R01 AG055337-02. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
© The Author(s) 2021.