Black Clouds in Emergency Medicine: Perception vs. Reality in Clinical Workload

In emergency medicine, the belief that some physicians are "Black Clouds" consistently facing heavier workloads, while others are "White Clouds" experiencing lighter shifts, persists despite limited scientific validation.

This study aimed to evaluate whether these reputational labels correspond to measurable differences in clinical workload.

A retrospective observational study was conducted in a tertiary emergency department with an average of 830 daily visits. Physicians with at least 6 months of service were surveyed to identify peers as "luckiest" (White Clouds) and "unluckiest" (Black Clouds), resulting in four physicians per group. Duty rosters over 6 months were classified as black, white, or gray days depending on on-duty combinations. Objective parameters-including patient volume, red triage cases, admissions, cardiopulmonary resuscitations, trauma cases, and deaths-were extracted from electronic records and statistically compared.

A total of 156 shifts were analyzed: 57 white, 51 gray, and 48 black days. Mean daily patient volume was slightly lower on black days (814.31 ± 8.90) compared to white (825.91 ± 9.10) and gray (829.09 ± 10.24), though not statistically significant (p = 0.429). No significant differences were found in red triage patients, admissions, intensive care unit (ICU) admissions, resuscitations, trauma cases, or deaths across groups.

The study found no statistically significant differences between Black Cloud and White Cloud shifts. These labels appear to reflect subjective perception rather than objective workload, underscoring the need to address cultural superstitions in emergency medicine to reduce stigma and support physician well-being.