The value of a second control group depends on the supplementary information that is available about unobserved biases that are suspected to exist. A second control group provides a test of the ...

Weird Science fails to locate a porn-free control group Hungry petunias, macho shark victims, pessimistic binge drinkers, and new … ...

Social media users have encouraged immunisation sceptics to register for an alleged scientific study called the “Vaccine Control Group”. However, a UK health body said data collected through ...