After years of trying to clamp down on hospital spending, the federal government wants to get control over what Medicare spends on nursing homes, home health services and other medical care typically provided to patients after they have left the hospital. Researchers have discovered huge discrepancies in how much is spent on these services in different areas around the country. In Connecticut, Medicare beneficiaries are more than twice as likely to end up in a nursing home as they are in Arizona. Medicare spends $8,800 on each Louisiana patient getting home health care, $5,000 more than it spends on the average New Jersey senior.