Using signal detection test to assess the correlation between daily sleep duration, mental workload, and attention sensitivity in nurses

Abstract

Background: Increased attention among healthcare workers, particularly nurses, is crucial for preventing medical errors and patient harm. This study uses an objective approach that overcomes the limitations of the subjective self-report measures employed in prior research on nurses’ attention. Methods: This cross-sectional study was conducted from January to March 2023 among 108 nurses at Besat Hospital in Tehran, Iran. The data collected included demographic information, the NASA Task Load Index (NASA-TLX) for mental workload assessment, and the CogLab signal detection test for attention sensitivity measurement. Results: The participants exhibited a median mental workload of 68.5 (IQR = 14.9) and a median attention sensitivity of 52.5 (IQR = 39.2). Daily sleep duration was positively correlated with attention sensitivity (r = 0.644, p < 0.001), whereas mental workload was negatively correlated with attention sensitivity (r = -0.655, p < 0.001). Men demonstrated greater attention sensitivity (p = 0.040), and women reported greater mental workload (p = 0.043). Conclusion: Reducing daily sleep duration and increasing mental workload can diminish nurses’ attention sensitivity. Prioritizing adequate sleep and implementing strategies to reduce mental workload are crucial for enhancing nurse performance and patient safety.