Incidence of stroke throughout the years A recent systematic review of 56 studies from all over the world show that the stroke incidence and early case fatality reported in these studies change over time. They indicate a fall in high-income countries by 42%, but an increase in low-middle income countries by as much as 100%.[2] This contrasting trend leads to the situation that the estimated ove...

Crawford and his colleagues describe an analysis of frog species in El Cope, Panama. “We discovered that 30 species were lost, including five undescribed species, representing 41 per cent of total amphibian lineage diversity in El Cope. The irony of increased species discovery coupled with enigmatic population declines in amphibians was recognised at least 10 years ago, “yet until now we have l...

if they fit a hypothesis or invalidate it. Observations are intrinsically quantitative, but quantitative validity is sometimes so obvious that we ignore it and consider a result to be qualitative. A numerical answer is always more satisfying, even if it just puts a limit of detectability on a yes/no answer. What's cool about computational biology is that it allows you to handle large quantitati...

as they sailed Alaska's coasts and floated down her rivers. Thus the disease probably came first to the Aleutian Islands, the southern coast, and the southeastern panhandle with the ex¬ plorers and fur traders some time in the latter part of the 18th century. The search for gold and whales late in the 19th century provided additional opportunities for the introduction of tuberculosis into the i...

Stroke mortality in the United States has declined since 1900. The mortality rates from stroke in Rochester, Minnesota, have declined 76% since 1950, and the primary cause for the declines is a decrease in the incidence of new cases of cerebral infarction and cerebral hemorrhage. There are no data on the incidence of stroke prior to 1945 to confirm the US mortality trend. The decline in inciden...