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.
Ms. Craig as Batgirl, with Burt Ward, left, as Robin, and Adam West as the title hero in the campy 1960s hit âBatman.â. Yvonne Craig, the actress best known as Batgirl on the hit 1960s television series âBatman,â died on Monday at her home in Pacific Palisades, Calif. She was 78.