The accuracy of Medicare's hospital claims data: progress has been made, but problems remain.

The accuracy of Medicare's hospital claims data: progress has been made, but problems remain.

BACKGROUND Health care databases provide a widely used source of data for health care research, but their accuracy remains uncertain. We analyzed data from the 1985 National DRG Validation Study, which carefully reabstracted and reassigned ICD-9-CM diagnosis and procedure codes from a national sample of 7050 medical records, to determine whether coding accuracy had improved since the Institute ...

Progress made in maternal and child health, but challenges remain.

The prevalence, impact and economic implications of atrial fibrillation in stroke: what progress has been made?

Atrial fibrillation (AF) is a major risk factor for stroke, especially in the elderly. Increased life expectancies mean that AF-related stroke is a growing global public health concern. Improvements in the detection, treatment and prevention of the consequences of AF have occurred in recent years. However, the extent to which these improvements have impacted on the prevalence of AF, the risk of...

New Claims from Paul Sharp - But Has the Source of HIV-1 Really Been Located?

February 2006. In recent days there has been much press coverage about new claims by American, British and Belgian scientists that they have discovered the geographical source of AIDS. These researchers have apparently detected simian immunodeficiency viruses (SIVs) that are closely related to the AIDS pandemic virus, HIV-1, in the stools of wild chimpanzees living in the very south-eastern cor...

Multidrug-resistant tuberculosis around the world: what progress has been made?

Multidrug-resistant tuberculosis (MDR-TB) (resistance to at least isoniazid and rifampicin) will influence the future of global TB control. 88% of estimated MDR-TB cases occur in middle- or high-income countries, and 60% occur in Brazil, China, India, the Russian Federation and South Africa. The World Health Organization collects country data annually to monitor the response to MDR-TB. Notifica...