When making a medical diagnosis, a lag time is a delay in time until a step towards diagnosis of a disease or condition is made. Types of lag times are mainly: 1  Onset-to-medical encounter lag time, the time from onset of symptoms until visiting a health care provider.
Great Falls, MT Population and Races. As of 2010-2014, the total population of Great Falls is 59,017, which is 4.10% more than it was in 2000. The population growth rate is much lower than the state average rate of 11.55% and is much lower than the national average rate of 11.61%.
Early on, the village was known as Forestville (unofficially, since there was already a Forestville with a Post Office), but was named Great Falls in 1955. Geography. Great Falls is located at (38.9981653, â77.2883157) at an elevation of 344 feet (105 Located on Virginia State Route 7 in Northern Virginia, Great Falls is 15 miles (24 km) west-northwest of downtown Washington, D.C. and 10.5 miles (16.9 km) north of Fairfax, the county seat. Great Falls lies in the Piedmont upland on the right bank of the Potomac River.