Variable costs of nursing care in hospitals.
D003361:Cost Allocation / Q000379:methods*; D003365:Costs and Cost Analysis / Q000379:methods*; D003953:Diagnosis-Related Groups; D005249:Fees and Charges; D006801:Humans; D007349:Insurance, Health, Reimbursement; D009738:Nursing Service, Hospital / Q000191:economics*; D010361:Patients / Q000145:classification; D010362:Patients' Rooms / Q000191:economics; D012720:Severity of Illness Index; D014481:United States