Data watch. Reverse migration triggers higher costs.
D003625:Data Collection; D017049:Employer Health Costs / Q000706:statistics & numerical data* / Q000639:trends; D006264:Health Benefit Plans, Employee / Q000191:economics* / Q000706:statistics & numerical data; D006801:Humans; D011243:Preferred Provider Organizations / Q000191:economics* / Q000706:statistics & numerical data; D012179:Retirement / Q000191:economics; D014481:United States