Associations Among Chronotype, Sleep Quality, and Neurocognitive Function in Shift-Working Nurses During Consecutive Morning Shifts: A Cross-Sectional Study

Dec 16, 2025Workplace health & safety

Links Between Natural Sleep Patterns, Sleep Quality, and Thinking Skills in Nurses Working Back-to-Back Morning Shifts

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Abstract

Forty-six percent of nurses in a rotating shift system had an intermediate chronotype, while 53.7% had an evening chronotype.

  • Evening chronotypes reported significantly poorer subjective sleep quality compared to intermediate chronotypes.
  • Nurses with an evening chronotype experienced shorter total sleep duration and longer sleep onset latency.
  • Lower sleep efficiency was observed in evening chronotypes relative to their intermediate counterparts.
  • Performance on composite and visual memory tests was worse among evening chronotypes.
  • No significant differences in near-miss incidents were found between the chronotype groups.

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