Past estimates relied on minimal opportunistic sighting and much speculation, ranging from 2 million to 50-75 million individuals.

Past estimates on the exact number of Chinese Indonesians relied on the 1930 Dutch East Indies census, which collected direct information on ethnicity.

That estimate, unlike the current study, relied on reported cases instead of screening a large population.

Grant's estimate of the population of Jerusalem relied on an influential study by Jeremias in 1943.

These estimates rely on various assumptions (see below).

Therefore, estimates of the ultimate human impact of the disaster have relied on numerical models of the effects of radiation on health.

The earlier estimates of high mortality for inhalation anthrax rely mainly on three limited databases.

Here, though, all estimates rely on "what ifs."

Cousens' estimates of mortality relied heavily on retrospective information contained in the 1851 census.

Does that mean that those estimates relying on some data from elsewhere should be ignored?