Considerations for Clock Drawing Scoring Systems in Perioperative Anesthesia Settings

摘要

The Clock Drawing Test is a cognitive screening tool gaining popularity in the perioperative setting. We compared three common scoring systems:1) the Montreal Cognitive Assessment, 2) the Mini-Cog,and 3) Libon et al. (1996).Three novice raters acquired inter- and intra-rater reliability for each scoring system and then scored 738 preoperative clock drawings with each scoring system. Final scores correlated with each other but with notable discrepancies indicating the need to attend to inter and intra-rater reliability when implementing any scoring approach in a clinical setting.