This calculator uses a number of different equations to determine the minimum number of subjects that need to be enrolled in a study in order to have sufficient statistical power to detect a treatment effect. 1. Before a study is conducted, investigators need to determine how many subjects should be included. By enrolling too few subjects, a study may not have enough statistical power to detect a difference (type II error). Enrolling too many patients can be unnecessarily costly or time-consuming.
âBarbara Gordon. Barbara Babs Gordon AKA Batgirl is the daughter of Gotham City's Police Commissioner James Gordon. She later took on the mantle of Batgirl, and became Batman's partner and protegÃ© for many years. Barbara was first seen when her father was shot by Jazzman on the anniversary of the death of Bruce Wayne's parents. A sorrowful Batman visits Gordon in Gotham City Hospital, where Barbara tells him not to blame himself.
Yvonne Craig, Best Known As 'Batgirl,' Dies At 78. Yvonne Craig portrays the crime-fighting Batgirl in the 1960s television hit Batman. Craig died Monday, in her Los Angeles home from complications from breast cancer. She was 78. Yvonne Craig, best known for her role as Batgirl in the iconic 1960s television series Batman, died Monday. She was 78. Craig died at her home in Pacific Palisades, Calif., as a result of complications from breast cancer that had spread to her liver. In a statement posted to her website, family members said: