Shift work creates unusual problems.
D003277:Contraceptives, Oral, Combined; D003625:Data Collection; D006801:Humans; D007588:Job Satisfaction; D009741:Nursing Staff, Hospital / Q000523:psychology; D010559:Personnel Management / Q000706:statistics & numerical data*; D010561:Personnel Staffing and Scheduling / Q000706:statistics & numerical data*; D011795:Surveys and Questionnaires; D014481:United States; D014940:Work Schedule Tolerance