Analysis of factors affecting the need and demand for medical care.
D000367:Age Factors; D001294:Attitude to Health; D003191:Comprehensive Health Care / Q000191:economics; D003466:Cultural Characteristics; D005251:Fees, Medical / Q000639:trends; D005102:Health Expenditures / Q000639:trends; D006285:Health Planning / Q000191:economics; D006301:Health Services Needs and Demand / Q000191:economics; D006801:Humans; D007348:Insurance, Health; D007564:Japan; D009017:Morbidity; D014481:United States