Many U.S. medical students and residents in hospitals suffer from sleep deprivation and fatigue, an American Medical Association member survey revealed.

In 2003, the Accreditation Council for Graduated Medical Education required resident physicians limit their work week to 80 hours. On-site duty cannot exceed 24 consecutive hours.

However, the survey found 11 percent of residents and 12 percent of students worked more than 80 hours per week on their most recently completed rotation.

Although, 50 percent of residents and 45 percent of medical students believe sleep deprivation or fatigue may have had a negative effect on patient care, 50 percent of the residents and 75 percent of the of medical students said they would be uncomfortable reporting working excessive hours.

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