Sensitivity is the proportion of patients with disease who test positive. In probability notation: P(T+|D+) = TP / (TP+FN). Specificity is the proportion of patients without disease who test negative. In probability notation: P(T-|D-) = TN / (TN + FP). Pretest Probability is the estimated likelihood of disease before the test is done. It is the same thing as prior probability and is often estimated.
Billed as An Aquarian Exposition: 3 Days of Peace & Music, it was held at Max Yasgur's 600-acre (240 ha; 0.94 sq mi) dairy farm in the Catskills near the hamlet of White Lake in the town of Bethel. Bethel, in Sullivan County, is 43 miles (69 km) southwest of the town of Woodstock, New York, in adjoining Ulster County.
El Monaco Motel site. This was the place where Woodstock was planned and organized. It is a few miles down the road from the actual concert site. It was depicted in the movie Taking Woodstock (the movie location is in a different place).